40 results on '"Kyuichi KAMOI"'
Search Results
2. Screening of periodontitis with salivary enzyme tests
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Yoh Tamaki, Akihisa Tsurumoto, Hirohisa Arakawa, Tomoko Tanaka, Kyuichi Kamoi, Kazuko Kirimura, Nobuhiro Hanada, Tsutomu Sato, and Yoshiaki Nomura
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Adult ,Male ,medicine.medical_specialty ,Saliva ,Pathology ,Gingival and periodontal pocket ,Sensitivity and Specificity ,Isozyme ,Gastroenterology ,Blood Urea Nitrogen ,chemistry.chemical_compound ,Internal medicine ,Lactate dehydrogenase ,medicine ,Humans ,Mass Screening ,Periodontal Pocket ,Aspartate Aminotransferases ,Periodontitis ,General Dentistry ,Blood urea nitrogen ,chemistry.chemical_classification ,Analysis of Variance ,L-Lactate Dehydrogenase ,Receiver operating characteristic ,business.industry ,Clinical Enzyme Tests ,Middle Aged ,medicine.disease ,Isoenzymes ,Enzyme ,ROC Curve ,chemistry ,Periodontics ,Female ,Periodontal Index ,business ,Biomarkers - Abstract
The purpose of this study was to determine the usefulness of salivary biochemical markers for the screening of periodontal disease and examine the agreement between the results of saliva enzyme tests and those of probing depth. The present study included a total of 187 subjects who underwent annual medical check-ups at the Comprehensive Health Care Center, Honjo, Saitama Prefecture, Japan. Periodontal pocket probing was performed with a WHO probe, and various enzymes and biochemical parameters in saliva were measured. For lactate dehydrogenase (LDH), the proportions of the five isoenzymes were calculated. To decide the cut-off point for each enzymatic activity, receiver operating characteristic curves (ROC curves) were constructed and the points of minimum difference between sensitivity and specificity were decided. Among the biochemical markers tested, salivary LDH level had the highest sensitivity and specificity (sensitivity 0.66, specificity 0.67), while salivary levels of aspartate aminotransferase (AST) and blood urea nitrogen (BUN) also had sensitivity and specificity above 0.60. Among the LDH isoenzymes, LDH4 and LDH5 dominated in whole saliva samples. Salivary LDH may be a feasible and useful parameter for the screening of periodontal disease, while salivary AST and BUN also appear to be potentially useful for this purpose. (J. Oral Sci. 48, 177-183, 2006)
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- 2006
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3. Abstract of Public Open Special Lecture at Symposium
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Kyuichi Kamoi, Yasunori Yoshimura, Hirofumi Suemori, Hiromitsu Nakauchi, Mamoru Watanabe, Yumi Matsuzaki, Makoto Asashima, and Shigeto Shimmura
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Cancer Research ,medicine.medical_specialty ,business.industry ,Reproductive medicine ,medicine ,Medical physics ,Cell Biology ,Stem cell ,business - Published
- 2005
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4. Clinical Effect of Dentifrice Containing Sodium Ascorbate on Periodontitis
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Yoshihiro Shibukawa, Satoru Yamada, Kazuaki Takayanagi, Akiko Hisano, Kyuichi Kamoi, Taichi Ito, Hisahiro Kamoi, Akiyo Ito, and Soh Sato
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Periodontitis ,Sodium ascorbate ,medicine.medical_specialty ,chemistry.chemical_compound ,chemistry ,business.industry ,Internal medicine ,medicine ,Dentifrice ,Dentistry ,medicine.disease ,business ,Gastroenterology - Abstract
本研究の目的は, アスコルビン酸配合歯磨剤の歯周炎に対する臨床効果を検討することである。被験者は, 歯周炎患者53名 (男性15名, 女性38名, 平均年齢44.0歳) であり, 試験は二重盲検法により行った。ゼオライト, モノフルオロリン酸ナトリウムを配合した歯磨剤 (D-1), D-1に1.0%アスコルビン酸ナトリウムを配合した歯磨剤 (D-2), D-1に0.1%酢酸トコフェロール, 0.05%セチルピリジニウム, 0.05%β-グリチルリチン酸を配合した歯磨剤 (D-3), およびD-3に1.0%アスコルビン酸ナトリウムを配合した歯磨剤 (D-4) の4種類の歯磨剤を用意し, そのうち1種類を被験者に4週間使用させた。歯周病の臨床パラメーターは試験開始時, 2週間後, 4週間後に測定し, 比較検討を行った。その結果, アスコルビン酸配合のD-2, およびD-4使用群の出血スコアにおいて, 試験開始時と4週間後の間に統計学的有意差が認められた (p
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- 2004
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5. Application of a carbon dioxide laser for early closure of gingival flaps
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Soh Sato, Kyuichi Kamoi, Yoshiko Wasaki, and Hisahiro Kamoi
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medicine.medical_specialty ,Materials science ,business.industry ,Periodontal surgery ,medicine.medical_treatment ,Connective tissue ,Dentistry ,General Medicine ,Carbon dioxide laser ,Surgery ,medicine.anatomical_structure ,Co 2 laser ,Incision Site ,medicine ,Premolar ,Full thickness ,business ,Canine tooth - Abstract
The aim of this study was to evaluate the applicability of a carbon dioxide (CO 2 ) laser as a means of achieving early closure of gingival flaps after periodontal surgery. In this study, an incision was made from the maxillary premolar to the canine tooth in dogs. Full thickness flaps were raised, and mucoperiosteal flaps were created. After repositioning the mucoperiosteal flaps in the experiment group, CO 2 lasers were applied to the incision sites, and the flaps were closed with the laser. In the control group, they were closed with simple silk. Animals were sacrificed at postoperative days 7 and 14, and histological examinations were performed. The results showed that although epithelial invasion was observed along the incision areas 7 days after treatment in the control groups, complete closure of the incision area and regular arrangement of fibers in the connective tissue beneath the epithelium were observed in the group treated with lasers. These results suggest that closure of gingival flaps with a CO 2 laser may reduce the possibility of infection at initial incision sites.
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- 2003
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6. Effect of Sex Hormone on Polymorphonuclear Leukocyte Functions of Periodontal Tissue
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Masahiro Kanda, Kyuichi Kamoi, and Tomohisa Ogawa
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Polymorphonuclear leukocyte ,medicine.medical_specialty ,Periodontal tissue ,Endocrinology ,Sex hormone-binding globulin ,biology ,business.industry ,Internal medicine ,Immunology ,medicine ,biology.protein ,business - Abstract
妊娠性歯肉炎の原因は, 性ホルモンの分泌量の増加と細菌性プラークによるものと考えられている。近年, 性ホルモン分泌量の増加は, 宿主の免疫機能に影響を与えることが知られ, 研究が行われている。本研究では, 妊娠性歯肉炎の発症の過程について検討するために, ヒト多形核白血球 (PMN) に, 性ホルモンのestradiolとprogesterone, さらにこれらの性ホルモンで発育促進される-Prevotella intermedia (P. intermedia) の超音波抽出物 (P. i. -BE) を同時に作用させ, その際のPMNの貪食能に対する影響と, 組織破壊に与するIL-1β の放出量について検索し, 以下の結果を得た。1. PMNの貪食率は, P. i. -BEを添加すると有意に低下し, さらに性ホルモンを同時に添加すると, 性ホルモンの濃度依存的に有意な低下を示した。2. PMNの貪食状態の観察では, 性ホルモンとP. i. -BEを同時に添加すると, 細胞内にビーズが取り込まれている割合は, 性ホルモンの濃度依存的に有意に低下した。3. PMNのIL-1β の放出量は, P. i. -BE存在下において, 性ホルモンを同時に添加することにより有意に増加した。以上の結果より, 妊娠時の歯周組織における性ホルモン濃度の増加や, 歯周病原性細菌が, PMNの貪食能を低下させ, さらにIL-1β の放出量を増加させることが考えられ, 妊娠時において, 性ホルモンとP. intermediaは, 歯周疾患の発症に影響を及ぼすことが示唆された。
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- 2002
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7. Study on a Saliva Test for Periodontal Disease in the Elderly
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Kyuichi Kamoi, Akiko Hisano, Hiroshi Nakaya, and Tsutomu Sato
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medicine.medical_specialty ,Saliva ,Periodontal disease ,business.industry ,Saliva testing ,Internal medicine ,Medicine ,Dentistry ,business ,Gastroenterology - Abstract
本研究の目的は, 高齢者の歯周病を診断する唾液中の因子について検討することである。65歳以上で, 健常群7名, 歯周炎の中等度群11名, 重度群9名, また無歯顎群9名の計36名を被験者とした。全唾液を用いて, Actinobacillus actinomycetemcomitans, Porphyromonas gingivalis, Prevotella intermedia, Bacteroides forsythus, Treponema denticola をPolym crascchain rcaction法 (PCR法) にて検出, Lactatcdehydrogenase (LDH) やAspartateaminotransferase (AST) の活性値測定, およびインターロイキン1 (IL-1) の遺伝子多型を検索し, 各群の比較, および臨床パラメーターとの関連を調べた。その結果, Bacteroides forsythus 検出率が重度群で健常群より有意に高かった (P
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- 2002
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8. Apoptosis of Polymorphonuclear Leukocytes in Gingival Crevicular Fluid from Adult Periodontitis Patients
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Kyuichi Kamoi, Yukihiro Numabe, Tadao Ohsaki, and Michiko Matsumura
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Crevicular fluid ,medicine.medical_specialty ,Adult periodontitis ,business.industry ,Apoptosis ,Internal medicine ,medicine ,business ,Gastroenterology - Abstract
成人性歯周炎患者の歯周炎罹患部位および健常者歯肉における, それぞれの歯肉溝滲出液中の多形核白血球 (以下GC-PMNs) の細胞死に関して, アポトーシスの形をとるものが, どの程度占めているかについて検索した。成人性歯周炎患者および健常者各5名の協力を得, 各被験者よりGGPMNsを採取した。また, 歯肉溝滲出液 (以下GCF) 成分による末梢血多形核白血球 (以下PB-PMNs) の細胞死への影響について検索するため, PB-PMNsを健常者より採取, GCF上清により刺激した。GCF上清は, 健常者歯肉より採取したもの以下H-GCF群), 歯周炎罹患部位より採取したもの (以下AP-GCF群) を用いた。解析は, アポトーシス細 (胞, ネクローシス細胞の検出試薬として, FITC標識annexinV, Propidium iodideを用いて, フローサイトメトリー, および共焦点レーザー走査顕微鏡により行った。その結果, 健常者群GC-PMNsにおけるアポトーシス細胞およびネクローシス細胞の比率が, それぞれ3.25±1.86%, 3.52±3.4%であるのに対して, 患者群GC-PMNsでは, それぞれ19.48±2.4%, 16.79±4.8%で, ともに健常者群に比較して患者群でアポトーシス細胞およびネクローシス細胞の比率が有意に高く認められた。生細胞の比率は健常者群に比較して患者群で有意に低かった。また, GCF刺激によるPB-PMNsのアポトーシス細胞の比率は, H-GCF群 (1.59±0.57%) に対してコントロール群 (3.87±1.1%), AP-GCF群 (3.12±0.87%) でそれぞれ有意に高く認められた。以上の結果より, 歯周炎罹患部位では, 健常者歯肉に比較して, アポトーシスあるいはネクローシスの形をとるGC-PMNsが多く存在することが示唆された。
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- 2001
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9. Clinical Evaluation for Collagen Membrane (BioMend) in Guided Tissue Regeneration
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Takeo Maida, Kazuyuki Kobayashi, Kazumi Sekiguchi, Naoto Yoshinuma, Kenji Fujikawa, Eiichi Sakuraba, Fumitsugu Kawasaki, Akiko Matsumura, Hiroshi Kobayashi, Shunsuke Shirato, Koichi Ito, Kohichi Kiyonobu, Hiroki Sugito, Seidai Murai, Hiroyuki Konobu, Kuniharu Suzuki, Kyuichi Kamoi, Osamu Tanaka, Koichi Nanba, Hidekazu Kitamura, Haruna Sumimoto, Takashi Arai, Kazuhiro Gomi, Hiroshi Nakaya, Satoru Yamada, Tadao Ohsaki, and Rieko Akiyama
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Pathology ,medicine.medical_specialty ,business.industry ,Collagen membrane ,Medicine ,Anatomy ,business ,Clinical evaluation - Published
- 1999
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10. Effects of Subepithelial Connective Tissue Graft for Root Coverage. Subepithelial Connective Tissue Treatment
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Hiroyuki Konobu, Hiroshi Nakaya, Akiko Matsumura, and Kyuichi Kamoi
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Pathology ,medicine.medical_specialty ,medicine.anatomical_structure ,business.industry ,medicine ,Connective tissue ,Subepithelial connective tissue graft ,business ,Root coverage - Abstract
歯肉退縮による審美障害を主訴として来院した患者10名 (男性3名, 女性7名) の42部位を対象に, 上皮下結合組織移植術により根面被覆を行った。術前に, 退縮の深さおよび幅, アタッチメントレベル, 角化歯肉の幅の臨床診査を行った。臨床所見ならびに術後6カ月の臨床パラメーターの推移を統計学的に検索した。また, 上皮下結合組織移植術後の治癒形態を知る目的でイヌを用い, 下顎左右第2, 3, 4前臼歯部に上皮下結合組織移植術, または遊離歯肉移植術を行い病理組織学的に観察し, 以下の結論を得た。1) 露出根面の被覆率 (術前のVR一術後のVR) /術前のVR×100 (%) は, 全体で73.95±32.27%であった。2) 歯種別では, 上顎が下顎に比べて有意に高い根面被覆率を示した。また, 前歯部が臼歯部に比べ根面被覆率が高かった。3) 歯肉退縮の幅における根面被覆率は有意差が認められず, 歯肉退宿の深さにおける根面被覆率では有意差が認められた。4) イヌにおける上皮下結合組織移植術後の治癒形態は, 遊離歯肉移植術後と同様の長い上皮性の付着が見られた。以上より, 歯肉退縮のある露出根面に対する上皮下結合組織移植術は, 移植片を骨膜と歯肉弁とで挟み込むことができるため, 生着および根面被覆に有効であった。また, 本術式は供給側が閉鎖創となるため, 術後の痺痛が少なく, 日常臨床に有効な方法であることが示唆された。
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- 1998
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11. Awareness Level for Periodontal Disease Patients. CPITN Code Numbers and the Results of a Questionnaire
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Soh Sato, Tadao Ohsaki, Kyuichi Kamoi, Asako Osanai, Hisahiro Kamoi, and Masataka Ezure
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medicine.medical_specialty ,Periodontal disease ,business.industry ,Awareness level ,Code (cryptography) ,Physical therapy ,medicine ,Medical physics ,business - Abstract
歯周病の罹患状態および歯周病に対する意識について, 新しい指数であるCPITNと初診時のアンケート調査を併せて検討を行った。調査は, 一診療所における34~62歳の初診患者494名 (男性426名, 女性68名, 平均年齢47.9歳) を対象に実施した。その結果, 歯周病に対する認識, 理解度は, コードが高い群ほど著明に認められたが, 歯周治療および予防処置において重要なブラッシング, スケーリング, 定期的なメインテナンス治療については, 実際の歯周病罹患状態との間に開きが認められた。このことから歯周治療を行う際, その罹患状態に対応した各人へのモチベーションの必要性が示された。
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- 1996
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12. Effects of Monensin on the Immunocytochemical Detection of Matrix Metalloproteinase 3 in Human Periodontal Ligament Cells
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David L. Cochran, Kyuichi Kamoi, Ann M. Tran, and Hiroshi Nakaya
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Matrix Metalloproteinase 3 ,chemistry.chemical_compound ,Pathology ,medicine.medical_specialty ,Chemistry ,Monensin ,medicine ,Periodontal fiber - Published
- 1996
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13. Phagocytic Function of Peripheral Blood, Gingival Crevicular Fluid and Salivary Polymorphonuclear Leukocytes
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Yukihiro Numabe, Kyuichi Kamoi, and Kohichi Kiyonobu
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Crevicular fluid ,medicine.medical_specialty ,Endocrinology ,business.industry ,Internal medicine ,medicine ,business ,Function (biology) ,Peripheral blood - Abstract
歯周疾患の病因論において, 多形核白血球 (PMN) の貧食能は重要な現象の一つである。健常者10名を対象とし, 末梢血中白血球 (B-PMN), 歯肉溝滲出液中白血球 (C-PMN), 唾液中白血球 (S-PMN) の本論文の要旨は, 第35回歯科基礎医学会総会 (1993年10月13日), 第72回IADR総会 (1994年3月10日) において発表した。貪食能の焦点をあて, 各細胞群の貪食能と表面レセプターの発現量との関係を検索した。その結果, 各細胞群の貪食能とFcγ レセプターの発現量は, B-PMNに比較してC-PMN, S-PMNで低く, C3biレセプターの発現量は, B-PMNに比べC-PMN, S-PMNで高かった。さらに, B-PMNをGCFおよび唾液でインキュベーションすると, GCFと唾液によりC3biレセプターの発現量は増加し, 唾液によりFcγ レセプターの発現量は減少した。また, 貪食能は低下した。以上のことより, B-PMNと比較してC-PMN, S-PMNの貪食能は低下しており, その原因はPMNの細胞表面のレセプターの発現状態の変化によるものであることが示唆された。
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- 1995
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14. Pain Control after Periodontal Surgery. The Effective Factors Concerning Pain Status
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Kohichi Kiyonobu, Kyuichi Kamoi, Hiroshi Ito, Yukihiro Numabe, and Takashi Yoshihama
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medicine.medical_specialty ,Pain control ,business.industry ,Periodontal surgery ,Anesthesia ,medicine ,business ,Pain.status ,Surgery - Abstract
本研究では, 歯周外科手術後に発現した痛みの検索を行い, 快適な手術後の予後の提供に関して考察を試みた。歯周外科手術を受けた患者110名, 術者21名にアンケート調査を実施した。術者から手術の種類や範囲, 対象とした歯周疾患の程度, 処置時間, 薬の処方など, 患者から一般的問診事項, 術後の痛みの程度, 発現時間, 薬剤の服用状況などを聴取した。痛みの程度の評価には, VAS (Visual Analogue Scale) を用いた。VASの平均値は33.3%, 最小値は0%, 最大値は87%を示した。性別, 年齢, 手術時間, 術野の広さ, 病態の程度などとVAS値との関係は認められなかった。しかし術式が複雑であったり, 偶発症などへの対応が不十分であるとVAS値が高くなる傾向があった。よって歯周外科手術後の痛みの管理には術者側だけでなく患者側の因子の考慮も必要と考えられた。
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- 1995
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15. Epithelial Cell Kinetics With Atelocollagen Membranes: A Study in Rats
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Yukihiro Numabe, Kyuichi Kamoi, Hiroshi Ito, Hideaki Hayashi, and Mark I. Ryder
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Male ,Periodontium ,Pathology ,medicine.medical_specialty ,Root surface ,Kinetics ,Epithelium ,Surgical Flaps ,Root apex ,Cell Movement ,Surgical removal ,Periodontal Attachment Loss ,medicine ,Animals ,Rats, Wistar ,Wound Healing ,Chemistry ,Epithelial Cells ,Membranes, Artificial ,Anatomy ,Gingival epithelium ,Rats ,Biodegradation, Environmental ,medicine.anatomical_structure ,Membrane ,Connective Tissue ,Guided Tissue Regeneration, Periodontal ,Autoradiography ,Periodontics ,Collagen ,Wound healing ,Cell Division - Abstract
A recent development in guided tissue regeneration procedures is the use of resorbable membranes, which eliminate the need for subsequent surgical removal. In this study we performed flap surgery in rats with (experimental) or without (control) implantation of one of the newer materials, atelocollagen. We observed the gingival epithelial cell kinetics using 3H-thymidine and examined the extent of gingival epithelium migration. Histological observations at day 1 on the experimental side demonstrated regenerated epithelium apposed to the collagen membrane with an intervening layer of necrotic tissues and/or fibrinous exudate. There was no observable proliferation of regenerated epithelium toward the root apex. On day 14, the regenerated epithelium migrated apically along the treated root surface in the control group. By contrast, on day 14 in the experimental group, the regenerated epithelium contacted the root surface at the cemento-enamel junction (CEJ). Apical to the CEJ, there was new cementum formation with inserting connective tissue fibers. Autoradiographs from day 1 experimental sides demonstrated labeled cells in the basal cell layers from oral, crevicular, and junctional epithelium. From day 1 to day 5, labeling indices of oral epithelium and regenerating crevicular epithelium on experimental sides were lower than on control sides. These histological and autoradiographic findings suggest that atelocollagen membrane inhibits apical migration of regenerating epithelium and accelerates connective tissue reattachment in part by inhibiting the mitotic function of basal epithelial cells in early stages of wound healing.
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- 1993
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16. Distribution of Fibronectin during Wound Healing after Experimental Free Gingival Grafts
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Shigeru Nakajima, Hiroshi Nakaya, and Kyuichi Kamoi
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Fibronectin ,Pathology ,medicine.medical_specialty ,biology ,Chemistry ,biology.protein ,medicine ,Distribution (pharmacology) ,Wound healing - Abstract
遊離歯肉移植の創傷治癒におけるフィブロネクチンの役割を検索する目的で, 遊離歯肉移植後のフィブロネクチンの局在を免疫組織化学的に観察した。ゴールデンハムスターの上顎の歯肉歯槽粘膜に口腔前庭拡張を行い受容床を作製, 移植片を口蓋歯肉より採取し, 遊離歯肉移植を行い, 経時的なフィブロネクチンの局在の変化を間接蛍光抗体法により観察をした。術後3日目までにおいて, フィブロネクチンは, 移植片と受容床との接合部に強陽性に認められた。術後5~14日において, 肉芽組織に一致してフィブロネクチンの強陽性所見が見られた。術後28日を経過すると, 移植部のフィブロネクチンの局在は, 口蓋歯肉と同様に観察させた。以上の結果より, 遊離歯肉移植後の創傷治癒において, フィブロネクチンは, 移植片と受容床との接着に関与し, 血管の新生や上皮の遊走および伸展を促進することが示唆された。
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- 1993
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17. Salivary biomarkers for predicting the progression of chronic periodontitis
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Yasuko Shimada, Yoshiaki Nomura, Nobuhiro Hanada, Yukihiro Numabe, Toshihide Noguchi, Tsutomu Sato, Mitsuo Fukuda, Kyuichi Kamoi, Hiromasa Yoshie, Takashi Arai, Kazuhiro Gomi, and Koji Inagaki
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Male ,Periodontium ,Saliva ,Pathology ,medicine.medical_specialty ,Gastroenterology ,Sensitivity and Specificity ,Statistics, Nonparametric ,chemistry.chemical_compound ,Lactate dehydrogenase ,Internal medicine ,Periodontal Attachment Loss ,medicine ,Tannerella forsythia ,Humans ,Periodontal Pocket ,Longitudinal Studies ,General Dentistry ,Porphyromonas gingivalis ,Aged ,Periodontitis ,biology ,Prevotella intermedia ,Cell Biology ,General Medicine ,Middle Aged ,biology.organism_classification ,medicine.disease ,Chronic periodontitis ,Otorhinolaryngology ,chemistry ,ROC Curve ,Chronic Periodontitis ,Mann–Whitney U test ,Disease Progression ,Female ,Periodontal Index ,Biomarkers - Abstract
Objective Predicting the progression of periodontitis would allow for targeted supportive periodontal therapy. The purpose of this study was to determine the usefulness of salivary biomarkers for predicting the progression of periodontitis. Design Eighty-five chronic periodontitis patients were enrolled in an 18-month longitudinal study. Amongst them, 57 experienced progression of periodontitis, indicated at the end of the 18 months by at least one site with >3 mm loss of attachment compared with baseline. We determined the levels of aspartate aminotransferase, alanine aminotransferase (ALT), lactate dehydrogenase, alkaline phosphatase and free haemoglobin as biomarkers, as well as the counts of Porphyromonas gingivalis, Prevotella intermedia and Tannerella forsythia, which represented the periodontal bacteria, in the stimulated saliva. The Mann–Whitney U test was used to compare patients with and without progression. After categorising the diagnostic values, the chi-square test was applied. Results Counts and ratios (ratio to total bacteria) of P. gingivalis and P. intermedia were found to be significant predictors of the progression of periodontitis. To increase prediction accuracy, combination analyses were performed. The combination of ALT level and the P. gingivalis ratio showed the highest likelihood (p
- Published
- 2010
18. The Study on the Change of Gingival Blood Flow after a Flap Surgery
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Hiroshi Ito, Kyuichi Kamoi, Soh Sato, and Koji Sasamoto
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medicine.medical_specialty ,business.industry ,Anesthesia ,Medicine ,Blood flow ,business ,Surgery - Abstract
上顎前歯部に歯周外科治療を必要とする歯周疾患の患者20名を選び, フラップ手術後の創傷治癒過程における血流量の変化をレーザースペックル血流計を用いて観察した。予備実験群として臨床的に健康な歯肉を有する成人10名を対象とし, 脈拍, 血圧および血流量の変化を0日, 3日, 5日, 7日, 14日, 21日, 28日と経日的に測定をおこなった。血流量の測定では, 測定部位の上顎切歯群および犬歯部の頬側中央部の付着歯肉部に, 保持装置を作製し測定をおこなった。また, 臨床パラメータとしては測定部位のplaque control record (PCR), gingival index (GI), およびプロービングデプス (PD) を測定した。実験群では, 0日の値を術前値とし, 上顎前歯部にフラップ手術をおこなった。さらに予備実験群と同様の実験計画で, 術後の血流量の変化を比較観察し, 以下の結果を得た。1) 臨床パラメータは, 予備実験群でPCR 0%, GI 0, 実験群ではPCR 0%, GI 0.95±0.70であった。予備実験群では, 測定期間において歯肉直下血流量の経日的変化は認められず, 脈拍および血圧と血流量との相関関係についても認められなかった。2) フラツプ手術後の創傷治癒過程において歯肉上皮直下の血流量の変化は, 術前の測定値に比較し術後早期に増加または, 減少する型の2相に分けられた。さらに2相に分けられた群のPDの平均値は, 増加群で2.89±0.42 mm, 減少群で3.97±0.76mmであった。3) フラップ手術後の血流増加群では, 術後3日, 5日および7日において, 術前の血流量と比較して増加し有意差が認められた (p
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- 1992
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19. Immunological Findings on Wegener's Granulomatosis with Granular Gingivitis
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Kyuichi Kamoi, Kenju Nagahiro, Norio Yoshinari, Noboru Sonoyama, Toshihide Okabe, Takahisa Yamada, and Yukihiro Numabe
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Wegener s ,medicine.medical_specialty ,Gingivitis ,business.industry ,medicine ,medicine.symptom ,business ,Dermatology - Published
- 1992
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20. Distribution of Type IV Collagen and Laminin during Wound Healing in Rats Periodontal Tissue
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Hiroshi Nakaya, Yuko Kitajima, Akiko Miyasato, Kyuichi Kamoi, Soh Sato, and Takehito Aoki
- Subjects
Periodontal tissue ,Collagen, type I, alpha 1 ,Pathology ,medicine.medical_specialty ,Type IV collagen ,biology ,Chemistry ,Laminin ,biology.protein ,medicine ,Distribution (pharmacology) ,Wound healing - Abstract
本研究は, 歯肉切除後の創傷治癒過程におけるIV型コラーゲンとラミニンの局在について検索した。実験動物は, ウィスター系ラットを用い, 口蓋側歯肉に実験的歯肉切除を行った。IV型コラーゲンおよびラミニンの観察は, 酵素抗体法により行った。正常歯周組織において, IV型コラーゲンおよびラミニンは, 内側基底板を除く基底膜に認められた。処置後2~4日では, ラミニンは再生する上皮先端付近の基底膜相当部には観察されず, IV型コラーゲンは, わずかではあるがラミニンより遅く観察された。処置後5~7日では, 内側基底板を除く基底膜に観察された。以上の結果から, 上皮の再生において上皮細胞の伸展・移動を誘導する役割を有するのではなく, 上皮の形態維持において重要な役割を有していることが示唆された。
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- 1992
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21. A Time-pathological Study on the Senescence of Periodontal Tissues in Rats
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Kyuichi Kamoi, Hiroshi Kodaka, Mariko Numabe, and Yukihiro Numabe
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Senescence ,Pathology ,medicine.medical_specialty ,Periodontal tissue ,business.industry ,Medicine ,business ,Pathological - Abstract
老化に伴う組織変化を本質的老化との区別を念頭におき捉えることと, コラーゲンの型別変化を形態学的に捉えることを目的に, 生後8週齢から96週齢のウィスター系ラットの上顎近遠心的歯周組織を, H-E染色ならびにpicrosirius-polarization methodにより検索した。その結果, 96週齢に至るまで, 歯の生理的遠心移動および萌出が継続して観察され, それに付随する歯周組織の改造現象が観察された。上皮は48週齢から72週齢の間に根面への深行増殖が観察され, 細胞性セメント質の添加増生形態より72週齢以降, 各歯冠を中心に近心傾斜していることが示唆された。本質的な老性変化がみられたのは, 細胞数の減少であり, 24週齢から48週齢で減少傾向を示した。コラーゲン線維の型別変化として, 老化に伴いI型コラーゲンを示唆する赤色偏光が増加した。骨頂部と分岐部直下には短いIII型コラーゲンを示唆する緑色偏光が多く観察され, 萌出に対する改造を示唆した。
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- 1992
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22. Diabetic Patients in Uncontroled Periodontal Disease
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Shigeru Nakazima, Shoichi Ohgi, Kenju Nagahiro, Kyuichi Kamoi, Nobuyasu Saki, Mamoru Aoki, and Masahiro Matushita
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medicine.medical_specialty ,Periodontal disease ,business.industry ,Internal medicine ,medicine ,business ,Gastroenterology - Abstract
血糖値のコントロールされていない糖尿病患者100名を対象にアンケート調査を行い, その内から有歯顎者50名を選択し, 血液検査, 歯科臨床診査および細菌検査を行った。50名の糖尿病患者の内, NIDDMは44名88%, IDDMは6名12%であった。血糖値は88%, フルクトサミンは78%が正常値以上を示し, LDLは90%が正常値以下を示した。しかしながら, 総コレステロールは88%, 中性脂肪は68%, HDLは78%が正常値を示した。糖尿病, 成人性歯周炎, 難治性歯周炎の臨床結果を比較したところ, PlIはNIDDM1.4±0.1, IDDM1.3±0.4, 成人性歯周炎0.3±0.1, 難治性歯周炎1.0±0.2であった。GIは, NIDDM1.7±0.1, IDDM1.8±0.2, 成人性歯周炎0.7±0.2, 難治性歯周2.0±0.0であった。PDは難治性歯周炎が最も深く6.9±0.5mm, 次いで成人性歯周炎6.0±0.6mm, IDDM5.2±0.2mm, NIDDM4.7±0.3mmであった。細菌検査結果からNIDDMはAaが25.0%, Pgが54.5%, Piが4.5%の病原性を示し, IDDMは、Aaが16.7%, Pgが50.0%, Piが0%の病原性を示した。これに対し, 成人性歯周炎はAaが0%, Pgが70.0%, Piが0%の病原性を示し, 難治性歯周炎はAaが58.3%, Pgが66.7%, Piが0%の病原性を示した。NIDDMに関して臨床診査結果と細菌検査結果とを統計学的に解析したところ, 4≦PD
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- 1991
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23. Immunohistochemical Study of Wound Healing in Rat Periodontal Tissue. Distribution of Fibronectin after Experimental Gingivectomy by Electrosurgery and Conventional Surgery
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Kazutoshi Nishizawa, Hiroshi Nakaya, and Kyuichi Kamoi
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medicine.medical_specialty ,Periodontal tissue ,Electrosurgery ,biology ,business.industry ,medicine.medical_treatment ,Conventional surgery ,Dentistry ,Gingivectomy ,Surgery ,Fibronectin ,medicine ,biology.protein ,Immunohistochemistry ,Distribution (pharmacology) ,Wound healing ,business - Abstract
外科用メスと高周波電気メスとによる創傷治癒過程におけるフィプロネクチンの局在を比較する目的で, ラットに外科用メスおよび高周波電気メスにより歯肉切除を行い, 経時的なフィプロネクチンの局在を間接蛍光抗体法により観察した。外科用メスでは, 術後12時間, 1日たおいて, 線維素性滲出物に一致してフィプロネクチンが強陽性に認められた。高周波電気メスでは, 同時期において, 伸展, 増殖する上皮直下の結合組織にフィプロネクチンの強陽性所見が観察された。創傷の閉鎖は高周波電気メスの方がわずかに遅延する傾向にあった。外科用メスでは, 術後5日, 高周波電気メスでは術後7日に肉芽組織におけるフィプロネクチン陽性のピークが認められた。以上の結果より, 高周波電気メスによる創傷では, フィプロネクチンが創傷面に存在しないため, 上皮の再生が遅延し, さらに, 結合組織の治癒にも影響をおよぼすことが示唆された。
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- 1991
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24. Immunohistochemical Study of Wound Healing in Periodontal Tissue of Rats. Distribution of Type I Collagen, Type III Collagen and Fibronectin after Experimental Flap Operation
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Soh Sato and Kyuichi Kamoi
- Subjects
Type III collagen ,medicine.medical_specialty ,Periodontal tissue ,Pathology ,biology ,Chemistry ,Surgery ,Fibronectin ,Collagen, type I, alpha 1 ,medicine ,biology.protein ,Immunohistochemistry ,Distribution (pharmacology) ,Wound healing ,Type I collagen - Abstract
実験的フラップ手術後の創傷治癒過程におけるI型コラーゲン, III型コラーゲン, フィブロネクチンの動態を検索した。ラットは上顎口蓋側歯肉を剥離し, その後根面を削除した。術後, 1, 3, 4, 5, 7, 14, 28, 56日後に屠殺, I型コラーゲン, III型コラーゲン, フィブロネクチンの局在は間接蛍光抗体法にて観察した。その結果, 肉芽組織に一致してIII型コラーゲン, フィブロネクチンは, 1型コラーゲンに比較して強陽性に認められた。 ((12)) 結合組織線維が削除した根面に対し平行に走行するときには, その根面に沿ってフィブロネクチンの局在が認められ, さらにその線維に一致してI型コラーゲンが観察された。また再付着所見が認められるときには根面にフィプロネクチンは認められず, 付着する線維に一致してIII型コラーゲンが観察された。以上のことから, 線維性付着の再生に際しIII型コラーゲンは, I型コラーゲンに先行し, その足場を形成していることが示唆された。
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- 1991
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25. Salivary enzyme levels after scaling and interleukin-1 genotypes in Japanese patients with chronic periodontitis
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Hiromasa Yoshie, Yoshiaki Nomura, Tetsuo Kobayashi, Yukihiro Numabe, Hideaki Tai, Emire Oda-Gou, Hidemi Kurihara, Kyuichi Kamoi, and K. Ito
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Male ,medicine.medical_specialty ,Saliva ,Pathology ,Bleeding on probing ,Gastroenterology ,Polymorphism, Single Nucleotide ,Statistics, Nonparametric ,chemistry.chemical_compound ,Asian People ,Gene Frequency ,Japan ,Internal medicine ,Lactate dehydrogenase ,Genotype ,medicine ,Humans ,Aspartate Aminotransferases ,Periodontitis ,Alleles ,chemistry.chemical_classification ,L-Lactate Dehydrogenase ,business.industry ,Interleukin ,Alanine Transaminase ,Middle Aged ,medicine.disease ,Chronic periodontitis ,Enzyme ,chemistry ,Chronic Disease ,Periodontics ,Dental Scaling ,Female ,medicine.symptom ,Periodontal Index ,business ,Biomarkers ,Interleukin-1 - Abstract
Saliva has been used as a diagnostic fluid in medicine and dentistry. It is easy to collect using non-invasive methods. The intracellular enzymes present in saliva have been studied as markers of periodontal disease. The purpose of this study was to determine the salivary enzyme levels of aspartate aminotransferase (AST), alanine aminotransferase (ALT), and lactate dehydrogenase (LDH) after scaling and to clarify the influence of interleukin (IL)-1 genotypes on these enzyme levels.Forty-nine Japanese patients with chronic periodontitis (24 men and 25 women; mean age: 55.1 years) were enrolled in this study. Measurements of clinical parameters including probing depth (PD), clinical attachment level (CAL), and bleeding on probing (BOP) and collections of stimulated whole mixed saliva were performed at baseline and 4 weeks after scaling. After evaluation of salivary AST, ALT, and LDH levels, DNA was extracted from various cells in whole saliva. IL-1A+4845 G/T genotype was determined by polymerase chain reaction amplification, followed by enzyme digestion and electrophoresis. Statistical analysis was performed by the Wilcoxon signed-rank and Mann-Whitney U tests. A significant difference was set at P0.05.Mean PD, CAL, and BOP values significantly decreased after scaling (mean +/- SE: 3.2 +/- 0.1 mm to 2.6 +/- 0.1 mm in PD; 3.9 +/- 0.2 mm to 3.3 +/- 0.2 mm in CAL; and 41% +/- 4% to 18% +/- 3% in BOP) (P0.001). The values of AST, ALT, and LDH were 77.0 +/- 7.5, 43.9 +/- 5.5, and 753.4 +/- 96.5 (units per liter [U/l]) at baseline, and significantly decreased to 55.5 +/- 6.5, 30.0 +/- 5.5, and 394.7 +/- 34.0 (U/l) after scaling, respectively (P = 0.01, P = 0.006, and P0.001). The carriage rate of the IL-1A+4845 allele 2 was 24.5%. No difference was noted in the decrease in PD, CAL, and BOP after scaling between the carriers (N = 12) and non-carriers (N = 37) of IL-1A+4845 allele 2. However, the IL-1A allele 2 non-carriers displayed a significant decrease in salivary AST and ALT levels (P0.001), in contrast to the carriers who did not show any changes in the salivary levels of the enzymes after scaling.These results documented that salivary AST, ALT, and LDH levels reflect inflammation and destruction of periodontal tissue, suggesting clinically useful markers following periodontal therapy. In addition, although IL-1A+4845 alleles may not influence clinical parameters, they may influence post-scaling values of salivary AST and ALT.
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- 2007
26. Regulation of matrix metalloproteinases (MMP-2, -3, -9, and -13) by interleukin-1 and interleukin-6 in mouse calvaria: association of MMP induction with bone resorption
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Tatsuo Suda, Chisato Miyaura, Masaki Inada, Kenichiro Kusano, Tatsuya Tamura, Kyuichi Kamoi, Akira Ito, and Hideaki Nagase
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medicine.medical_specialty ,Gelatinases ,Gelatinase A ,Matrix metalloproteinase ,Bone resorption ,Mice ,Endocrinology ,Osteoclast ,Internal medicine ,medicine ,Animals ,Collagenases ,RNA, Messenger ,Bone Resorption ,Osteoblasts ,Chemistry ,Interleukin-6 ,Skull ,Interleukin ,Metalloendopeptidases ,medicine.anatomical_structure ,Matrix Metalloproteinase 9 ,Collagenase ,Matrix Metalloproteinase 2 ,Matrix Metalloproteinase 3 ,Collagen ,Type I collagen ,medicine.drug ,Interleukin-1 - Abstract
Interleukin-1 (IL-1) greatly induces osteoclast formation and stimulates bone resorption of mouse calvaria in culture. In the presence of soluble IL-6 receptor (sIL-6R), IL-6 similarly induces osteoclast formation, but the potency of IL-6 in inducing bone resorption in organ culture is weaker than that of IL-1. To study the differences in bone-resorbing activity between IL-1 and IL-6, we examined the effects of the two cytokines on the induction of matrix metalloproteinases (MMPs). In mouse calvarial cultures, IL-1 markedly enhanced the messenger RNA (mRNA) expression of MMP-13 (collagenase 3), MMP-2 (gelatinase A), MMP-9 (gelatinase B), and MMP-3 (stromelysin 1), which associated with increases in bone matrix degradation. A hydroxamate inhibitor of MMPs significantly suppressed bone-resorbing activity induced by IL-1. Gelatin zymography showed that both pro- and active-forms of MMP-2 and MMP-9 were detected in the conditioned medium collected from calvarial cultures, and IL-1 markedly stimulated both pro- and active-forms of the two gelatinases. IL-6 with sIL-6R also stimulated mRNA expression and biological activities of these MMPs, but the potency was much weaker than that of IL-1. Conditioned medium collected from IL-1-treated calvariae degraded native type I collagen, but 3/4- and 1/4-length collagen fragments were not detected, suggesting that both collagenases and gelatinases synergistically degraded type I collagen into smaller fragments. In mouse osteoblastic cells, the expression ofMMP-2, MMP-3, and MMP-13 mRNAs could be detected, and they were markedly enhanced by IL-1alpha on days 2 and 5. IL-6 with sIL-6R also induced expression of MMP-13 and MMP-2 mRNAs on day 2, but the expression was rather transient. These results demonstrate that the potency of induction of MMPs by IL-1 and IL-6 is closely linked to the respective bone-resorbing activity, suggesting that MMP-dependent degradation of bone matrix plays a key role in bone resorption induced by these cytokines.
- Published
- 1998
27. The effect on the iontophoresis brushes in the periodontal diseases
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Tetsuya Iizuka, Naoto Yoshinuma, Toru Ohtake, Kohji Hasegawa, Hajime Miyashita, Seidai Murai, Ryoki Hobo, Yasuo Tsuji, Shinobu Honda, Kazuo Misawa, Eiji Yoshinaga, Kyuichi Kamoi, Tohoru Herai, Koichi Ito, and Mamoru Saito
- Subjects
medicine.medical_specialty ,Iontophoresis ,business.industry ,Internal medicine ,medicine ,business ,Gastroenterology - Abstract
イオン導入電気歯刷子を用いて, 歯肉炎および歯周疾患の患者を対称に3施設で共同研究を行った。対象患者は男性36名, 女性49名の計85名であった。イオン歯刷子の通電効果をみるために4因子に割りつけを行い, 多元配置累積法により行った。診査項目は, プラーク, 歯石, 発赤, 腫脹, ポケットの深さ, 出血, 排膿および動揺の8項目である。プラークにおいては, 通電の有無と初期症状では通電有に効果が認められた (p
- Published
- 1985
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28. The Dextranase Absorption Through Oral Mucosa and Skin (Report II)
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Sadamasa Minato, Masayuki Iwata, Osamu Tamazawa, Kyuichi Kamoi, Jun Hattori, Takashi Watanabe, and Hiroshi Okamoto
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medicine.medical_specialty ,Dextranase ,integumentary system ,biology ,Chemistry ,Half-life ,Radioimmunoassay ,Absorption (skin) ,Enzyme assay ,stomatognathic diseases ,Subcutaneous injection ,medicine.anatomical_structure ,Endocrinology ,Internal medicine ,biology.protein ,medicine ,Oral mucosa ,Normal skin - Abstract
The purpose of these experiments are to detect on the stability of dextranase that was absorbed through either oral mucosa or skin of animals.The methods and materials are described as follows.MethodOne is the radioimmunoassay with 125I (RIA). (limited detection 25ng/ml)The other is enzyme activity (EA). The absorption through skin were detected with radioimmunoassay, other enzyme activity.Only the hair of rabbits on the back are trimmed, the skin was injured and dextranase was dressed on it.The absorption through oral mucosa.Gingivae in the mandibular anterior portion are applied for this research.Only control group is covered on lower oral mucosa, test group is injured in the marginal gingivae with dental hand instruments.The result was obtained as follows.(1) In control group, dextranase absorption into the tissue was not detected in normal skin, whereas it was detected on the injured skin of rabbits.(2) Neither normal oral mucosa nor injured one as to dextranase absorption was detected.(3) Dextranase absorption by means of subcutaneous injection to rabbits was detected decreased rapidly on the half life by two hours.(4) The absorption of dextranase was not significant factor as to surface active agents.
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- 1978
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29. The irritative property of dextranase to the rabbit skin and eye, and to the hamster cheek pouch membrane (Report III)
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Masayuki Iwata, Takashi Watanabe, Kunio Saito, Masaharu Hukami, Kyuichi Kamoi, and Katsuyuki Futakami
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Pathology ,medicine.medical_specialty ,Dextranase ,Erythema ,Chemistry ,Rabbit (nuclear engineering) ,Chaetomium gracile ,medicine.disease_cause ,medicine.anatomical_structure ,Cheek pouch ,medicine ,medicine.symptom ,Irritation ,Oral mucosa - Abstract
The irritation property of dextranase which was derived from Chaetomium gracile was determined to the rabbit skin and eye, and to the hamster cheek pouch membrane.1) Rabbit skin; Cotton cloths containing 300000 units/0.5ml of dextranase were patched on intact or abraded skin of the rabbit. After 24 and 72 hours, the irritancy of dextranase to intact or abraded skin were almost the same. After 24 hours only one out of three animals indicated slight erythema, and the irritation index was 0.2.2) Rabbit eye; On the rabbit eye 60000 units/0.1ml of dextranase was dropped once. After 1, 24, 48, 72 hours and 7 days, the irritancy of dextranase was observed according to the Draize's method. After 1 hour only one out of three animals indicated slight hyperemia of conjunctivae, and the mean total irritation score was 0.3.3) Hamster cheek pouch membrane; During 7 days, 1200000 units of dextranase was administered once a day in hamster cheek pouch by means of liquid or powder. However, any significant change could not be observed by the naked eyes or microscopic observations.These results suggested that the irritation property of dextranase to skin, eye and oral mucosa may be very slight or none. In particular, 20000 units/g of dextranase in the tooth paste may be out of question in its regular use.
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- 1979
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30. A histopathological study on qualitative changes in gingival collagen fibers for experimental periodontitis in rats - Remodeling of type I and III collagens detected by the picrosirius-polarization method
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Mariko Kamata and Kyuichi Kamoi
- Subjects
Periodontitis ,Pathology ,medicine.medical_specialty ,biology ,Chemistry ,Gingiva ,Periodontium ,biology.organism_classification ,medicine.disease ,Inflammatory cell infiltration ,Epithelial Attachment ,Rats ,law.invention ,law ,Fasciculus ,medicine ,Animals ,Collagen ,Electron microscope ,Mild gingivitis ,Type I collagen - Abstract
The objective of this study was to demonstrate the movement of type I and III collagens accompanying gingival inflammatory destruction. Experimental marginal periodontitis was induced by a calculogenic diet and a high-sucrose diet with feces in 3-week-old Wistar rats. We observed the changes in the interdental periodontium histopathologically by using the picrosirius-polarization method and an electron microscope. 1. After 5 weeks of eating the calculogenic diet, mild gingivitis was found. A small number of inflammatory cells consisting of neutrophils were seen. At the 2nd week, a variety of bone resorptions of alveolar crests began to appear. At the 10th week, an epithelial downgrowth was observed. At the 64th week, migration of epithelial attachment to half of the apex and a high degree of inflammatory cell infiltration of plasma cells could be seen. 2. Observations under the polarization microscope showed that interdantal horizontal fibers became coarse and type I collagen decreased but at the middle type III increased. However when the horizontal fasciculus were newly formed, type I was always dominant. Between interdental horizontal fibers and the alveolar crest, type III was increased. 3. Under the electron microscope microfibrils were found around adjacent degraded fibroblasts at the locations where collagen fibrils were destroyed and disappeared. In contrast, at the locations detached from inflammatory cell infiltration small bundles of microfibrils were seen. It is suggested that at the areas of destructive collagen structures the relative increase in type III and the appearance of microfibrils were caused by the reduction of type I. At the same time at the sites of detachment from the lesions, complete growth of type III and the appearance of microfibrils were found and were considered to be newly formed juvenile collagen structures. Moreover it is concluded that a balance proceeds with the qualitative changes in the types of collagen fibers involving breakdown and new formation.
- Published
- 1989
- Full Text
- View/download PDF
31. Study of Chronic Desquamative Gingivitis
- Author
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Osamu Tamazawa, Ami Yamada, Hiroyuki Hanamura, and Kyuichi Kamoi
- Subjects
Pathology ,medicine.medical_specialty ,biology ,Globulin ,Connective tissue ,Immunoglobulin E ,medicine.disease ,Hemolysis ,Epithelium ,Basal (phylogenetics) ,Reticulate ,medicine.anatomical_structure ,Immunology ,biology.protein ,medicine ,Antibody - Abstract
Chronic desquamative gingivitis is a common clinical manifestation of a number of diseases. This study was performed to determine the immunological status of this disease.Observations on 4 patients with desquamative lesions in the mouth, not on the skin and eyes, were as follows:1. IgG and IgA serum levels were normal, while IgM and IgE serum levels were lower than normal.The 50% hemolysis level (CH50) was normal in three of the cases; the second case had an elevated level.2. The direct immunofluorescent method revealed diffuse IgG deposition in connective tissue without epithelium; IgA, IgM and IgE were not found. C1q and C3 were not found in the tissue samples.3. The indirect immunofluorescent method revealed the following:(1) Case 1: IgM, C1q and C3 appeared as nuclear ataining in epithelium. Deposits of C1q localized in nucleus of the basal layer of epithelium.(2) Case 2: In the first collected serum, deposits of IgM were only found as a reticulate pattern in the basal layer of epithelium. In the serum collected 4 months later, however, both IgG and IgM showed positive reticulate patterns in the basal layer. Other globulins and complements were negative.(3) Case 3: Deposits were not found.4. There was no relationsip of immunoglobulins and complements between serum and biopsies.5. There was nothing in common with specific positive patterns in the experimented cases.
- Published
- 1981
- Full Text
- View/download PDF
32. The study on the chemical effects of plaque control during the periodontal dressing after surgery
- Author
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Toru Herai, Kunio Saito, Kyuichi Kamoi, Hiroyuki Hanamura, and Hiroshi Okamoto
- Subjects
medicine.medical_specialty ,Aqueous solution ,Side effect ,business.industry ,Chlorhexidine ,Dentistry ,Dental plaque ,medicine.disease ,Periodontal Dressings ,Plaque control ,Surgery ,medicine.anatomical_structure ,Tongue ,medicine ,Chlorhexidine Gluconate Solution ,business ,medicine.drug - Abstract
The aim of this study was to investigate on the effect of chemical plaque control and it's side effect from applying 0.2% aqueous chlorhexidine gluconate solution for the post-operative mouth-wash.Subjects were 876 sites from 32 individuals as an experimental group and 724 sites from 29 individuals as a control group.The results were obtained as follows;1. Observation on volume of plaque attachment(1) The experimental group (0.2% CH) had statistically significant plaque control effect to the control group.(2) Comparsion between two groups was apparent to the average indices either from 0.07 in the experimental group or from 0.59 in the control group.(3) Significant effect on the experimental group was observed from any sites involved in the mouth.2. Observation on the side effect(1) Apparent side effect was observed on discoloration of tongue, tooth, etc, in the experimental group.(2) It was, however, observed most of all slight, a few of moderate, and none of severe degree.From above obtained results, it is concluded that aqueous chlorhexidine gluconate solution is effective for short term application to patients as mouth-wash regimen immediately after periodontal surgery.Further trial will be suggested by changing ratio of chlorhexidine gluconate for chemical plaque control program during periodontal dressing.
- Published
- 1980
- Full Text
- View/download PDF
33. Complication of osseointegrated implants related to follow up maintenance phase. Two cases of hyperplasia formation and gingivitis
- Author
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Nakajima S, Yukihiro Numabe, Miyamato Y, Hiroshi Nakaya, Hamada S, Hiroyuki Miyata, Ohgi S, Kyuichi Kamoi, and Hideaki Hayashi
- Subjects
Male ,medicine.medical_specialty ,business.industry ,Dental Implantation, Endosseous ,Dentistry ,Middle Aged ,Hyperplasia ,medicine.disease ,Gingivitis ,Osseointegration ,Surgery ,Gingival Hyperplasia ,medicine ,Humans ,Maintenance phase ,Female ,medicine.symptom ,business ,Complication ,Aged - Published
- 1988
- Full Text
- View/download PDF
34. Histopathological study on experimental gingivitis in rats. The reaction of gingival epithelium in initial gingivitis
- Author
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Kyuichi Kamoi and Yukihiro Numabe
- Subjects
Pathology ,medicine.medical_specialty ,business.industry ,Dentistry ,Gingival Pocket ,Rats, Inbred Strains ,Gingivitis ,Gingival epithelium ,Epithelium ,Salivary Glands ,Rats ,Disease Models, Animal ,medicine ,Animals ,Autoradiography ,medicine.symptom ,business ,Pocket formation - Abstract
歯肉炎の成立過程を病理組織学的に把握する目的で炎症実験モデルを開発し, 炎症に対する歯肉上皮の反応と歯肉溝深化 (歯肉ポケット形成) 過程との関係を検索した。方法として, Wistar系ラットの両側大唾液腺を摘出して口腔内自浄作用の障害を起させた群 (実験群) と, 摘出を行わなかった群 (対照群) にそれぞれ固型飼料および粉末飼料を与えて, 歯周組織に与える影響を経時的に比較観察した。動物は実験開始1週, 2週, 4週, 3ヵ月, 6ヵ月, 9ヵ月後に屠殺し, 主として上顎第一臼歯口蓋側歯肉を肉眼的ならびに病理組織学的に, また組織形態計測, 3H-thymidineによるオートラジオグラフィーなどを用いて観察し, 以下の結果を得た。1. 肉眼的には, 実験開始3ヵ月以降飼料の性状を問わず, 対照群と実験群の数例の歯面に付着物が観察された。2. 病理組織所見では, 固型飼料実験群のみに炎症反応の進行が観察された。つまり, 2週目頃より接合上皮直下の固有層に多形核白血球を主体とした滲出性炎が始まり, 3ヵ月目頃よりリンパ球の浸潤が認められるようになり, その範囲は根尖方向へ拡大した。その過程で接合上皮がセメント・エナメル境を越えて深行増殖し, それに伴ない接合上皮内にポケット様の断裂が形成され, それが経時的に拡大するのが観察された。しかし, 9ヵ月目まででは, 歯槽骨頂の著しい吸収や歯根膜の変性, 破壊は認められなかった。3. 組織形態計測によると, 固型飼料実験群で, 9ヵ月目頃までに歯肉溝底の根尖方向への移動と, またそれに伴なう口腔歯肉溝上皮の根尖方向への増殖が観察された。さらに, 接合上皮直下の炎症性変化が強度になると, 歯肉ポケット底部を構成する上皮細胞数は減少する傾向にあることがわかった。4. オートラジオグラムの計測結果から, 固型飼料実験群で, 口腔歯肉溝上皮と接合上皮の基底細胞層において, 3H -thymidineの取り込みの経時的増加の傾向が認められた。とくに, 接合上皮下の結合組織に変性や破壊が認められた場合, その傾向は著しかった。これらのことから, 接合上皮と口腔歯肉溝上皮の増殖は歯肉ポケット形成につながり, また一方では炎症性の刺激に対するbarrierとして働いていることが示唆された。
- Published
- 1987
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35. [Epidemiological survey of periodontal disease in nursing homes for aged patients. 1. Oral hygiene status and prevalence of gingival inflammation]
- Author
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Takeyoshi Yoneyama, Kyuichi Kamoi, and Shinichi Arai
- Subjects
Male ,medicine.medical_specialty ,business.industry ,Oral hygiene status ,Health Status ,Dentistry ,Middle Aged ,Oral Hygiene ,Gingivitis ,Aged patients ,Nursing Homes ,Periodontal disease ,Japan ,Epidemiology ,medicine ,Humans ,Female ,Gingival inflammation ,Nursing homes ,business ,Periodontal Diseases ,Aged - Abstract
特別養護老人ホームにおける歯周疾患実態調査を行なう目的で全入園者104名の歯の残存率について調査した。その内で1歯以上の歯が残存し, その上調査可能な44名について6点法を用い plaque index および gingival index を計測した。その結果, 有歯顎者における平均残存歯数は7.98本であり, 男性では高齢者程, 残存歯数が少ないという結果が得られた。一方, 女性では, 男性のような傾向がみられなかった。また部位別に残存歯率をみると上下顎臼歯および上顎前歯において低い値が明らかにされ, また歯種別では下顎犬歯が高い残存歯率を示していることがわかった。なおプラーク沈着程度の調査では全歯面において高いプラーク付着率を示し, 歯肉炎症の程度は歯肉辺縁の擦過による出血により観察をした。その結果, gingival index が予想に反し, 低い値を示していることが判明した。
- Published
- 1985
36. [Clinical and microbiological study on effectiveness and usefulness of LS-007 for periodontitis]
- Author
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Hiroyuki Miyata, Kimihito Kusunoki, Kohji Hasegawa, Masao Aono, Katsumi Ikeda, Motoyuki Suzuki, Akira Yamaoka, Katsumasa Maeda, Kyuichi Kamoi, and Masatoshi Ueda
- Subjects
Periodontitis ,medicine.medical_specialty ,business.industry ,Minocycline ,Microbial Sensitivity Tests ,medicine.disease ,Gastroenterology ,Ointments ,Tetracyclines ,Internal medicine ,medicine ,Anti-Infective Agents, Local ,Humans ,business - Abstract
塩酸ミノサイクリン (MINO) を2% (力価) 含有する歯周炎局所治療剤 (LS-007) を歯周ポケットに1週間隔で4回連続して投与する群と, 2週間隔で3回連続して投与する群の二群に分け, 46名の歯周炎患者に投与し, その臨床的有効性, 安全性, 有用性ならびに細菌学的効果を検討した。その結果, 両群ともに歯肉炎指数, ポケットの深さなどの臨床症状がLS-007投与後に有意な改善を示すのと同時に, 歯周ポケット内に生息するB. gingivalisをはじめとした歯周病原性細菌であるとされているものを効果的に消失せしめた。また, 安全性では軽度の不快感が1例に認められたのみであった。一方, それらの細菌に対するMINOおよび他の抗生物質のMICを測定した結果, MINOは他剤よりも強く幅広い抗菌性を有することを認めた。以上の結果より, LS-007は歯周炎治療において臨床的ならびに細菌学的に有効かつ安全で有用性の高い製剤であることが確認できた。
- Published
- 1988
37. [Epidemiological survey of periodontal disease (3). Comparison between CPITN and conventional methods]
- Author
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Yoshikazu Watanabe, Kyuichi Kamoi, Hideaki Hayashi, and Norio Wakao
- Subjects
medicine.medical_specialty ,Health Services Needs and Demand ,Periodontal disease ,business.industry ,Internal medicine ,Epidemiology ,medicine ,Humans ,Periodontal Index ,Tooth Root ,business ,Gastroenterology ,Periodontal Diseases - Abstract
病周疾患の疫学調査にCPITNを導入し, 従来の診査項目と比較検討を行った。CPITNとPDにおいては東芝従業員 (A) 本院患者 (B) 両集団とも (A) 相関係数R=0.61 (B) 相関係数R=0.86で有意に強い相関を示した (p
- Published
- 1984
38. [Application of local drug delivery system to periodontal therapy. 4. Comparison of the therapeutic effects of administration of a TC film or root debridement on human periodontal disease]
- Author
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Masato MINABE, Kayo TAKEUCHI, Hiroshi TSUJIGAMI, Satoru SATO, Toshio HORI, Toshio UMEMOTO, Kyuichi KAMOI, Yukihiro NUMABE, Hideaki HAYASHI, Katsumi IKEDA, Yukio WATANABE, Takahiro HIMOJIMA, and Junichi TATSUMI
- Subjects
education.field_of_study ,medicine.medical_specialty ,Periodontal treatment ,business.industry ,medicine.medical_treatment ,Therapeutic effect ,Population ,Dentistry ,Root planing ,Dental Prophylaxis ,Tetracycline ,Surgery ,Periodontal disease ,Debridement (dental) ,Drug delivery ,medicine ,Dental Scaling ,Humans ,Collagen ,medicine.symptom ,Tooth Root ,education ,business ,Gingival recession ,Periodontal Diseases - Abstract
In 8 patients with periodontal diseases under good supragingival plaque control, 22 test teeth each having a pocket not more than 4 mm deep were treated respectively with 3 consecutive administrations of tetracycline immobilized cross-linked collagen film (TC film) at intervals of 1 week, with onceroot planing and with both of these. The therapeutic effects were compared both clinically and micro biologically. The results revealed improvements in clinical symptoms such as reduction in the depth of the pocket, bleeding on pocket probing and the like for each treatment group in 6-12 weeks. The second and third groups also showed remarked gingival recession. Further more, the density of intrapocket microorganisms showed a remarked decrease up to the 8th week for each treatment group and the population of spirochetes showed a decrease up to the 6th week for the first treatment group and up to the 8th-12th week for the second and third treatment group. The results show that both local application of the TC film and root planing are effective in periodontal treatment, but not the combined treatment.
- Published
- 1989
39. [Immunohistological study of wound healing in periodontal tissue of rats. Distribution of fibronectin and laminin after flap operation]
- Author
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Hiroshi Nakaya and Kyuichi Kamoi
- Subjects
Basement membrane ,Pathology ,medicine.medical_specialty ,Wound Healing ,biology ,Chemistry ,Connective tissue ,Granulation tissue ,Anatomy ,Epithelium ,Surgical Flaps ,Fibronectins ,Rats ,Fibronectin ,medicine.anatomical_structure ,Laminin ,medicine ,biology.protein ,Animals ,Basal lamina ,Wound healing ,Periodontal Diseases - Abstract
This study describes the distribution of fibronectin and laminin in periodontal tissue of rats after a flap operation. After full thickness flaps were raised, the roots were surgically exposed and planed. Animals were sacrificed at 12 hours, and 1, 3, 5, 7, 14, 28 and 56 days after the wounding. The block specimens were fixed in formalin, decalcified with EDTA, made into serial paraffin sections, and examined after hematoxylin and eosin staining, after Masson-trichrome staining and by indirect immunofluorescence for the presence of fibronectin and laminin. After the wounding, fibronectin was detected in the fibrin clot, and the migratory epithelial cells crossed over this fibrin clot (12 hours-5 days). Fibronectin was deposited heavily in the granulation tissue. When the gingival connective tissue had matured, fibronectin diminished (5-14 days). On the root surface, a layer of fibronectin was present in the region where connective tissue fibers were oriented parallel to the root surface, while no fibronectin was seen at the site of reattachment of the regenerated collagen bundle (14-56 days). Laminin was present in the basement membrane of normal epithelium and blood vessels, but was absent from the internal basal lamina. After the wounding, laminin was absent from the basement membrane zone of the distal site of the migrating epithelium (1-3 days). Upon completion of wound reepithelialization at 5-7 days after wounding, laminin reappeared throughout the basement membrane except the internal basal lamina. These results suggest that fibronectin may be important in the regeneration of epithelium, connective tissue and connective tissue attachment during repair by functioning as an extracellular provisional matrix for migrating cells. On the other hand laminin may be important in maintaining the normal epithelium.
- Published
- 1989
40. Gingival inflammation and clinical findings
- Author
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Kyuichi Kamoi
- Subjects
Pathology ,medicine.medical_specialty ,business.industry ,medicine ,Gingival inflammation ,business - Published
- 1982
- Full Text
- View/download PDF
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