34 results on '"Freitas, Rubens Moreno"'
Search Results
2. Treatment of Medication-Related Osteonecrosis of the Jaws (MRONJ) with Topical Therapy Using Active Oxygen Gel.
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Deliberador, Tatiana Miranda, Stutz, Carlos, Sartori, Elisa, Kluppel, Leandro, and de Freitas, Rubens Moreno
- Abstract
Medication-related osteonecrosis of the jaw (MRONJ) can be a debilitating complication that can arise in patients who took or are taking antiresorptive (including bisphosphonates) or antiangiogenic agents, leading to visible bone or a fistula that continues for more than eight weeks, without any history of radiotherapy. This clinical case aimed to describe the treatment of MRONJ with topical active oxygen therapy using blue
® m oral gel. A 63-year-old female patient that had been taking weekly sodium alendronate (70 mg) for four years by oral via, presented discomfort and implant movement in the #46 region, by that underwent surgical extraction of the implant. After three months the patient returned and was diagnosed with MRONJ. Initially, conventional therapies were performed, including surgical debridement and antibiotic therapy, but without success. The patient still had clinical signs of osteonecrosis six months after the implant extraction. The entire socket was then filled with blue® m oral gel by topical application. The patient was instructed to continue applying the gel to the region every 8 hours for 15 days. After this period, the patient returned, and it was observed that the wound was in the healing process, with the presence of epithelialized tissue and without bone exposure. The 2-year clinical follow-up showed the lesion had healed entirely, and a new implant was installed. After the osseointegration period, the final prosthesis was placed. The patient remains under clinical follow-up. Therefore, it can be concluded that the application of blue® m oral gel in this clinical case assisted in the recovery of the osteonecrosis lesion. [ABSTRACT FROM AUTHOR]- Published
- 2024
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3. Peri-implant bone level assessment of early loaded dental implants submitted to different prosthetic protocols: a case report
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YOSHIYASU, Rodrigo Hideki, primary, CARTELLI, Carolina Accorsi, additional, VIANNA, Camila Pereira, additional, CALDAS, Waleska, additional, BERNARDES, Sergio Rocha, additional, TROJAN, Larissa Carvalho, additional, and FREITAS, Rubens Moreno de, additional
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- 2023
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4. Sinus augmentation using a mini‐pig model: Effect of ceramic and allogeneic bone biomaterials
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Susin, Cristiano, Fiorini, Tiago, Lee, Jaebum, de Freitas, Rubens Moreno, Chiu, Hsien‐Chung, Prasad, Hari S., Buxton, Amanda N., and Wikesjö, Ulf M. E.
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- 2017
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5. Using the Digital Flow to Increase Efficiency in Complex Partial Rehabilitation with Dental Implants
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Melenikiotis, Andrew Sotirios, Vianna, Camila Pereira, Caldas, Waleska, Trojan, Larissa Carvalho, and de Freitas, Rubens Moreno
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Article Subject - Abstract
Background. This report presents a clinical case in which the CAD-CAM technology was applied to optimize a complex partial rehabilitation with implant-supported prostheses of a patient with several functional and aesthetic issues. Case presentation. A 40-year-old patient with several complaints due to the absence of multiple teeth and great dissatisfaction regarding his oral health was referred to a Dental College (Curitiba, Brazil). Guided surgery of 11 implants was planned. Digital flow and immediate loading protocol were applied. The patient was followed up for 2 years presenting good clinical and radiographic outcomes. Conclusions. The digital flow brought agility and precision to implant placement, immediate provisionalization added to satisfaction in the provisional phase, and CAD/CAM technology provided predictability and comfort to deliver the definite restorations.
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- 2022
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6. Impact of Soft Tissue Grafts to Reduce Peri-implant Alterations After Immediate Implant Placement and Provisionalization in Compromised Sockets.
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Frizzera, Fausto, de Freitas, Rubens Moreno, Muñoz-Chávez, Oscar Fernando, Cabral, Guilherme, Shibli, Jamil Awad, and Marcantonio Jr., Elcio
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ALVEOLAR process surgery ,MAXILLA surgery ,INCISORS ,GINGIVAL recession ,BONE grafting ,COLLAGEN ,CONNECTIVE tissues ,DENTAL implants ,PHOTOGRAPHY ,POSTOPERATIVE period ,SOFT tissue injuries ,DENTAL radiography ,TRANSPLANTATION of organs, tissues, etc. ,SURGICAL wound dehiscence ,SURGERY - Abstract
This study evaluated the impact of soft tissue grafts to reduce marginal periimplant recession (MPR) after 1 year of follow-up. A total of 24 patients with one single failing maxillary incisor presenting facial bone dehiscence and receiving an immediate implant, bone graft, and provisional were randomly divided into three groups (n = 8 in each group): control (CTL), collagen matrix (CM), and connective tissue graft (CTG). Clinical, photographic, and tomographic analyses were performed to evaluate tissue alterations. The use of a CTG avoided MPR (P < .05) and provided better contour of the alveolar ridge (P < .01) and greater thickness (P < .05) of the soft tissue at the implant facial aspect. [ABSTRACT FROM AUTHOR]
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- 2019
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7. Alveolar Ridge and Maxillary Sinus Augmentation Using rhBMP-2: A Systematic Review
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de Freitas, Rubens Moreno, Spin-Neto, Rubens, Junior, Elcio Marcantonio, Pereira, Luís Antônio Violin Dias, Wikesjö, Ulf ME, and Susin, Cristiano
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- 2015
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8. Horizontal ridge augmentation of the atrophic anterior maxilla using rhBMP-2/ACS or autogenous bone grafts: a proof-of-concept randomized clinical trial
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de Freitas, Rubens Moreno, Susin, Cristiano, Spin-Neto, Rubens, Marcantonio, Claudio, Wikesjö, Ulf M. E., Pereira, Luís Antônio Violin Dias, and Marcantonio, Elcio, Jr
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- 2013
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9. Immunological aspects of fresh-frozen allogeneic bone grafting for lateral ridge augmentation
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Spin-Neto, Rubens, Stavropoulos, Andreas, de Freitas, Rubens Moreno, Pereira, Luís Antônio Violin Dias, Carlos, Iracilda Zeppone, and Marcantonio, Elcio, Jr
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- 2013
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10. Impact of fully or partially guided surgery on the position of single implants immediately placed in maxillary incisor sockets: A randomized controlled clinical trial
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Kraft, Bruno, primary, Frizzera, Fausto, additional, Freitas, Rubens Moreno, additional, Oliveira, Guilherme José Lopes Pimentel, additional, and Marcantonio Junior, Elcio, additional
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- 2020
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11. Planejamento reverso interdisciplinar associado aos alinhadores estéticos fabricados em consultório
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Santos, Guilherme Nakagawa, primary, Freitas, Rubens Moreno de, additional, Ilkiu, Rodrigo Ehlers, additional, Araújo, Charles Lenzi de, additional, and La Forcada, Shaban Mirco Burgoa, additional
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- 2019
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12. Bone response after immediate placement of implants in the anterior maxilla: a systematic review
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Denardi, Ricardo Junior, primary, da Silva, Ricarda Duarte, additional, Thomé, Geninho, additional, Andrighetto, Augusto Ricardo, additional, de Freitas, Rubens Moreno, additional, Shimizu, Roberto Hideo, additional, Shimizu, Isabela Almeida, additional, and Melo, Ana Cláudia Moreira, additional
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- 2019
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13. Real Versus Virtual Position of Single Implants Installed in Premaxilla via Guided Surgery: A Proof of Concept Analyzing Positional Deviations
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Fontão, Flávia Noemy Gasparini Kiatake, primary, Luiz, Jaques, additional, de Freitas, Rubens Moreno, additional, Padovan, Luis Eduardo Marques, additional, Thomé, Geninho, additional, and Faot, Fernanda, additional
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- 2018
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14. Sinus augmentation using rh BMP ‐2/ ACS in a mini‐pig model: Influence of an adjunctive ceramic bone biomaterial
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Susin, Cristiano, primary, Lee, Jaebum, additional, Fiorini, Tiago, additional, Freitas, Rubens Moreno, additional, Chiu, Hsien‐Chung, additional, Prasad, Hari S., additional, Buxton, Amanda N., additional, and Wikesjö, Ulf ME, additional
- Published
- 2018
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15. ntegração entre cirurgia plástica periodontal e Odontologia Restauradora em reabilitação estética com resinas compostas – parte 1
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Alves, Stephanie Gomes Assunção, primary, Barrachina, Ángela Matarredona, additional, de Freitas, Rubens Moreno, additional, Sakamoto Junior, Antonio Setsuo, additional, and Ilkiu, Rodrigo Ehlers, additional
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- 2018
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16. Histological analysis and gene expression profile following augmentation of the anterior maxilla using rhBMP-2/ACSversusautogenous bone graft
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de Freitas, Rubens Moreno, primary, Susin, Cristiano, additional, Tamashiro, Wirla Maria da Silva Cunha, additional, Chaves de Souza, João Antonio, additional, Marcantonio, Claudio, additional, Wikesjö, Ulf ME, additional, Pereira, Luís Antônio Violin Dias, additional, and Marcantonio, Elcio, additional
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- 2016
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17. Assessment of biocompatibility of ureasil-polyether hybrid membranes for future use in implantodontology
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Oshiro Junior, João Augusto, primary, Mortari, Gabriel Riquieri, additional, de Freitas, Rubens Moreno, additional, Marcantonio-Junior, Elcio, additional, Lopes, Leandro, additional, Spolidorio, Luis Carlos, additional, Marcantonio, Rosemary Adriana, additional, and Chiavacci, Leila Aparecida, additional
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- 2016
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18. Alveolar Ridge and Maxillary Sinus Augmentation Using rhBMP-2:A Systematic Review
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de Freitas, Rubens Moreno, Spin-Neto, Rubens, Junior, Elcio Marcantonio, Pereira, Luís Antônio Violin Dias, Wikesjö, Ulf Me, and Susin, Cristiano
- Abstract
The aim of this systematic review was to evaluate clinical and safety data for recombinant human bone morphogenetic protein-2 (rhBMP-2) in an absorbable collagen sponge (ACS) carrier when used for alveolar ridge/maxillary sinus augmentation in humans.
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- 2013
19. Comparação entre enxerto ósseo autógeno e rhMP-2 (infuse Bone Graft) na reconstrução de maxila atrófica anterior
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Freitas, Rubens Moreno de [UNESP], Universidade Estadual Paulista (Unesp), Marcantonio Júnior, Elcio [UNESP], and Pereira, Luís Antonio Violin D. [UNESP]
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Ossos - Enxerto ,Implantes dentários ,Regeneração óssea ,Bone regeneration - Abstract
Made available in DSpace on 2014-12-02T11:16:37Z (GMT). No. of bitstreams: 0 Previous issue date: 2013-06-25Bitstream added on 2014-12-02T11:21:07Z : No. of bitstreams: 1 000720965_20170625.pdf: 73585 bytes, checksum: 89f8d802c100024227831d01696617f8 (MD5) Bitstreams deleted on 2017-06-30T13:45:04Z: 000720965_20170625.pdf,. Added 1 bitstream(s) on 2017-06-30T13:45:56Z : No. of bitstreams: 1 000720965.pdf: 994392 bytes, checksum: f6ae537c66dde69858756ff87f9d4737 (MD5) Bitstreams deleted on 2017-08-24T16:17:03Z: 000720965.pdf,. Added 1 bitstream(s) on 2017-08-24T16:17:48Z : No. of bitstreams: 1 000720965.pdf: 994392 bytes, checksum: f6ae537c66dde69858756ff87f9d4737 (MD5) O objetivo do estudo foi comparar o uso de rhBMP-2/ACS com o do enxerto ósseo autógeno para aumento ósseo em espessura na região anterior de maxila. 24 pacientes foram selecionados e divididos de forma randomizada em 2 grupos: Grupo 1 – rhBMP-2/ACS ou Grupo 2 – enxerto ósseo autógeno intraoral particulado. Uma malha de titânio foi utilizada para manutenção do arcabouço dos enxertos. O ganho ósseo clínico, a análise histológica/histomorfométrica (biópsia aos 6 meses), tomografias (pré-operatória, 3 e 6 meses) e PCR em tempo real (raspagem de osso neoformado obtida aos 6 meses) foram os métodos de avaliação. Clinicamente, o pós-operatório foi estável. O aumento ósseo médio em espessura clínica foi 3,2±0,9 vs. 3,7±2,1mm (p=0,31) para o Grupo 1 e Grupo 2, respectivamente. O Grupo 1 apresentou aumento ósseo tomográfico significante aos 2mm da crista óssea quando comparado ao Grupo 2 (1,5±0,7 vs. 0,5±0,9mm; p=0,01). Na análise histológica, o Grupo 1 apresentou uma medula óssea significativamente rica em células e vasos sanguíneos (p=0,002) quando comparado ao Grupo 2, entretanto, nenhuma diferença estatística foi encontrada para os outros parâmetros. PCR em tempo real resultou em maior expressão gênica de BMP2 e Runx2 (p=0,001 e p=0,0021, respectivamente) no Grupo 1 e RANKL:OPG, BSP e OPN no Grupo 2 (p=0,01, p=0,005 e p=0,0009, respectivamente). Um total de 62 implantes foram instalados aos 6 meses. Em conclusão, o Grupo 1 apresentou um aumento ósseo clínico e tomográfico comparável ao Grupo 2, apresentando um resultado histológico e de expressão gênica superior, sugerindo ser uma alternativa viável ao enxerto ósseo autógeno. The objective of this study was to compare bone augmentation in the anterior maxilla following implantation of rhBMP2/ACS vs. autogenous bone graft. In this study, 24 patients were selected and equally randomized into 2 groups: Group 1 - rhBMP2/ACS or Group 2 - intraoral particulated autogenous bone graft. A titanium mesh was used for space provision in both Groups. Average clinical bone gain, histological/histomorphometrical (core biopsy obtained at 6 month), CBCT (preoperative, 3 and 6 months follow-up) and real time PCR (new bone scraped at 6 months) were used as evaluation methods. Clinical healing was generally uneventful. Mean clinical ridge width increased 3.2±0.9 vs. 3.7±2.1 mm (p=0.31) for Group 1 and Group 2, respectively. Group 1 yielded statistically significant CBCT bone gain only at subcrestal level compared with Group 2 (1.5±0.7 vs. 0.5±0.9mm; p=0.01). In the histological analysis, specimens from group 1 showed bone marrow significant richer in cells and capillaries (p=0.002) than Group 2, however no difference was found in other parameters. Real time PCR showed higher expression of genes BMP2 and Runx2 in Group 1 (p=0,001 e p=0,0021, respectively) and RANKL:OPG, BSP and OPN in Group 2 (p=0,01, p=0,005 and p=0,0009, respectively). A total of 62 implants were installed after 6 months. In conclusion, Group 1 supported clinically and tomographically relevant alveolar ridge augmentation of comparable magnitude to Group 2, presenting more favorable histological and gene expression results, suggesting an alternative for autogenous bone graft.
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- 2013
20. Sinus augmentation using rhBMP‐2/ACS in a mini‐pig model: Influence of an adjunctive ceramic bone biomaterial.
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Susin, Cristiano, Lee, Jaebum, Fiorini, Tiago, de Freitas, Rubens Moreno, Chiu, Hsien‐Chung, Prasad, Hari S., Buxton, Amanda N., and Wikesjö, Ulf M. E.
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SINUS augmentation ,BONE morphogenetic proteins ,MINIATURE pigs as laboratory animals ,BIOCERAMICS ,BONE physiology ,OSSEOINTEGRATED dental implants ,PATIENTS ,MAXILLARY sinus surgery ,BONE growth ,ANIMAL experimentation ,BIOLOGICAL models ,BIOMEDICAL materials ,COLLAGEN ,EUTHANASIA ,HISTOLOGY ,DENTAL implants ,INFLAMMATION ,ORAL surgery ,SWINE ,OSSEOINTEGRATION ,TREATMENT effectiveness - Abstract
Abstract: Background: Recombinant human bone morphogenetic protein‐2 in an absorbable collagen sponge carrier (rhBMP‐2/ACS) has been shown to support significant bone formation when used to augment the maxillary sinus for implant dentistry. Nevertheless, bone biomaterials have been suggested to extend rhBMP‐2/ACS with limited support of the merits of such approaches. Objectives: To evaluate local bone formation/dental implant osseointegration following implantation of rhBMP‐2/ACS combined with a ceramic bone biomaterial using a mini‐pig sinus augmentation model. Methods: Twelve adult Göttingen mini‐pigs received rhBMP‐2/ACS (rhBMP‐2 adjusted to 0.43 mg/cc) alone or combined with an off‐the‐shelf biphasic ceramic (15%/85% HA/ß‐TCP) biomaterial at 3:1, 1:1 and 1:3 ratios randomized to contra‐lateral maxillary sinus sites yielding rhBMP‐2/ACS fractions of 100%, 75%, 50% and 25%, respectively. A 4‐cc implant volume was used for all sites. Two threaded dental implants (ø4.0 × 11.5 mm) were placed at each site. The animals were euthanized at 8 weeks for histologic analysis. Results: Surgical execution and healing were generally uneventful, infraorbital local swelling was observed in all animals until suture removal. rhBMP‐2/ACS combined with the ceramic biomaterial did not significantly enhance local bone formation (range 9.0 ± 1.5 to 9.7 ± 2.1 mm) compared with rhBMP‐2/ACS alone (8.6 ± 1.1 mm; p > 0.05). Variations in rhBMP‐2/ACS to ceramic matrix ratios yielding rhBMP‐2 doses approximating 0.4, 0.9, 1.3 and 1.7 mg/sinus did not appreciably influence bone formation/osseointegration. Conclusions: Whereas rhBMP‐2/ACS supports significant bone formation/osseointegration in the mini‐pig sinus augmentation model and thus appears an effective alternative for sinus augmentation procedures, adding a ceramic biomaterial to rhBMP‐2/ACS does not produce meaningful biological advantages. [ABSTRACT FROM AUTHOR]
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- 2018
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21. Chitosan-based biomaterials used in critical-size bone defects: radiographic study in rat's calvaria
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Spin-Neto, Rubens, Coletti, Felipe Leite, Freitas, Rubens Moreno de, Pavone, Chaíne, Campana-Filho, Sérgio Paulo, and Marcantonio, Rosemary Adriana Chiérici
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radiographic image interpretation computer-assisted ,quitina ,bone regeneration ,regeneração óssea ,Materiais biocompatíveis ,Biocompatible materials ,chitosan ,quitosana ,chitin ,interpretação de imagem radiográfica assistida por computador - Abstract
OBJECTIVE: This study evaluated, using digital radiographic images, the action of chitosan and chitosan hydrochloride biomaterials, with both low and high molecular weight, used in the correction of critical-size bone defects (CSBD's) in rat's calvaria. MATERIAL AND METHOD: CSBD's with 8 mm in diameter were surgically created in the calvaria of 50 Holtzman rats and these were filled with a blood clot (Control), low molecular weight chitosan, high molecular weight chitosan, low molecular weight chitosan hydrochloride and high molecular weight chitosan hydrochloride, for a total of 10 animals, which were divided into two experimental periods (15 and 60 days), for each biomaterial. The radiographic evaluation was made using two digital radiographs of the animal's skull: one taken right after the bone defect was created and the other at the moment of the sacrifice, providing the initial and the final radiographic bone density in the area of the defect, which were compared. RESULT: Analysis of radiographic bone density indicated that the increase in the radiographic bone density of the CSBD's treated with the proposed biomaterials, in either molecular weight, in both observed periods, where similar to those found in control group. CONCLUSION: Tested chitosan-based biomaterials were not able to enhance the radiographic density in the CSBD's made in rat's calvaria. OBJETIVO: Este estudo avaliou através de imagens radiográficas digitais, a ação de biomateriais de quitosana e de cloridrato de quitosana, com baixo e alto peso molecular, utilizados na correção de defeitos ósseos de tamanho crítico (DOTC)em calvária de ratos. MATERIAL E MÉTODO: DOTCs com 8 mm de diâmetro foram criados cirurgicamente na calvária de 50 ratos Holtzman. Em 10 animais o defeito foi preenchido foram preenchidos com coágulo sanguíneo (controle negativo). Os 40 animais restantes foram divididos de acordo com o biomaterial utilizado no preenchimento do defeito (quitosana de baixo peso e de alto peso molecular, e cloridrato de quitosana de baixo e de alto peso molecular), e foram avaliados em dois períodos experimentais (15 e 60 dias), totalizando 5 animais/biomaterial/período de avaliação. RESULTADO: A avaliação radiográfica foi feita utilizando duas radiografias digitais do crânio do animal: uma tomada logo após o defeito ósseo ser criado e a outra no momento do sacrifício. Nessas imagens, foi avaliada a densidade óssea radiográfica inicial e a final na área do defeito, que foram comparadas. As análises na densidade óssea radiográfica indicaram aumento da densidade óssea radiográfica dos DOTCs tratados para todos os biomateriais testados, em ambos os períodos. Resultados semelhantes foram encontrados no grupo controle. CONCLUSÃO: Conclui-se que os biomateriais de quitosana testados não foram capazes de aumentar a densidade radiográfica em DOTC realizados em calvária de ratos.
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- 2012
22. Histological analysis and gene expression profile following augmentation of the anterior maxilla using rh BMP-2/ ACS versus autogenous bone graft.
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Freitas, Rubens Moreno, Susin, Cristiano, Tamashiro, Wirla Maria da Silva Cunha, Chaves de Souza, João Antonio, Marcantonio, Claudio, Wikesjö, Ulf ME, Pereira, Luís Antônio Violin Dias, and Marcantonio, Elcio
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ALVEOLAR process surgery , *MAXILLA surgery , *BONE morphogenetic proteins , *ANALYSIS of bones , *BONE grafting , *HISTOLOGICAL techniques , *DIGITAL image processing , *DENTAL implants , *POLYMERASE chain reaction , *PROBABILITY theory , *RESEARCH funding , *T-test (Statistics) , *RANDOMIZED controlled trials , *REVERSE transcriptase polymerase chain reaction , *DATA analysis software , *GENE expression profiling , *MANN Whitney U Test , *THERAPEUTICS - Abstract
Aim The objective of this report was to present histological characteristics and gene expression profile of newly formed bone following horizontal augmentation of the atrophic anterior maxilla using recombinant human bone morphogenetic protein-2 in an absorbable collagen sponge carrier (rh BMP-2/ ACS) versus an autogenous bone graft ( ABG). Methods Bone core biopsies from 24 subjects participating in a randomized clinical trial were obtained at dental implant placement, 6 months following alveolar ridge augmentation using rh BMP-2/ ACS (rh BMP-2 at 1.5 mg/ml; total dose 4.2 mg) or a particulate ABG harvested from the mandibular retro-molar region. A titanium mesh was used to provide wound stability and space for bone formation. Analysis included histological/histometric observations and gene expression profile of the newly formed bone. Results rh BMP-2/ ACS yielded bone marrow rich in capillaries, undifferentiated cells and bone lining cells compared with the ABG ( p = 0.002). Whereas no significant differences were observed in total bone fraction ( p = 0.53), non-vital bone particles trapped in lamellar vital bone were observed in the ABG group ( p < 0.001). Real-time PCR showed greater BMP-2 and RUNX2 expression for rh BMP-2/ ACS over the ABG ( p = 0.001 and 0.0021, respectively), while the ABG exhibited greater expression of RANKL: OPG, BSP and OPN over rh BMP-2/ ACS ( p = 0.01, 0.005 and 0.0009, respectively). Conclusions Our observations suggest that formative biological processes explain bone formation following implantation of rh BMP-2/ ACS, whereas remodelling, resorptive/formative processes, characterizes sites receiving ABGs. [ABSTRACT FROM AUTHOR]
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- 2016
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23. Alveolar Ridge and Maxillary Sinus Augmentation Using rhBMP‐2: A Systematic Review
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de Freitas, Rubens Moreno, primary, Spin‐Neto, Rubens, additional, Junior, Elcio Marcantonio, additional, Pereira, Luís Antônio Violin Dias, additional, Wikesjö, Ulf ME, additional, and Susin, Cristiano, additional
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- 2013
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24. Antimicrobial Brazilian Propolis (EPP-AF) Containing Biocellulose Membranes as Promising Biomaterial for Skin Wound Healing
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Barud, Hernane da Silva, primary, de Araújo Júnior, Adalberto Miguel, additional, Saska, Sybele, additional, Mestieri, Letícia Boldrin, additional, Campos, Juliana Alvares Duarte Bonini, additional, de Freitas, Rubens Moreno, additional, Ferreira, Nathália Ursoli, additional, Nascimento, Andresa Piacezzi, additional, Miguel, Felipe Galeti, additional, Vaz, Mirela Mara de Oliveira Lima Leite, additional, Barizon, Edna Aparecida, additional, Marquele-Oliveira, Franciane, additional, Gaspar, Ana Maria Minarelli, additional, Ribeiro, Sidney José Lima, additional, and Berretta, Andresa Aparecida, additional
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- 2013
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25. Chitosan-based biomaterials used in critical-size bone defects: radiographic study in rat's calvaria
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Spin-Neto, Rubens, primary, Coletti, Felipe Leite, additional, Freitas, Rubens Moreno de, additional, Pavone, Chaíne, additional, Campana-Filho, Sérgio Paulo, additional, and Marcantonio, Rosemary Adriana Chiérici, additional
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- 2012
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26. Immunological aspects of fresh‐frozen allogeneic bone grafting for lateral ridge augmentation
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Spin‐Neto, Rubens, primary, Stavropoulos, Andreas, additional, de Freitas, Rubens Moreno, additional, Pereira, Luís Antônio Violin Dias, additional, Carlos, Iracilda Zeppone, additional, and Marcantonio, Elcio, additional
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- 2012
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27. Incisive Canal Deflation for Correct Implant Placement: Case Report
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Spin-Neto, Rubens, primary, Bedran, Telma Blanca Lombardo, additional, de Paula, Wagner Nunes, additional, de Freitas, Rubens Moreno, additional, de Oliveira Ramalho, Lizeti Toledo, additional, and Marcantonio, Elcio, additional
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- 2009
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28. Histological evaluation of chitosan-based biomaterials used for the correction of critical size defects in rat's calvaria
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Spin-Neto, Rubens, primary, de Freitas, Rubens Moreno, additional, Pavone, Chaíne, additional, Cardoso, Márcia Barreto, additional, Campana-Filho, Sérgio Paulo, additional, Marcantonio, Rosemary Adriana Chiérici, additional, and Marcantonio, Elcio, additional
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- 2009
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29. Alveolar Ridge and Maxillary Sinus Augmentation Using rh BMP-2: A Systematic Review.
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Freitas, Rubens Moreno, Spin‐Neto, Rubens, Junior, Elcio Marcantonio, Pereira, Luís Antônio Violin Dias, Wikesjö, Ulf ME, and Susin, Cristiano
- Subjects
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ALVEOLAR process , *SINUS augmentation , *BONE morphogenetic proteins , *SYSTEMATIC reviews , *BONE regeneration , *BONE grafting , *TOOTH socket , *COLLAGEN - Abstract
Purpose The aim of this systematic review was to evaluate clinical and safety data for recombinant human bone morphogenetic protein-2 (rh BMP-2) in an absorbable collagen sponge ( ACS) carrier when used for alveolar ridge/maxillary sinus augmentation in humans. Materials and Methods Clinical studies/case series published 1980 through June 2012 using rh BMP-2/ ACS were searched. Studies meeting the following criteria were considered eligible for inclusion: >10 subjects at baseline and maxillary sinus or alveolar ridge augmentation not concomitant with implant placement. Results Seven of 69 publications were eligible for review. rh BMP-2/ ACS yielded clinically meaningful bone formation for maxillary sinus augmentation that would allow placement of regular dental implants without consistent differences between rh BMP-2 concentrations. Nevertheless, the statistical analysis showed that sinus augmentation following autogenous bone graft was significantly greater (mean bone height: 1.6 mm, 95% CI: 0.5-2.7 mm) than for rh BMP-2/ ACS (rh BMP-2 at 1.5 mg/m L). In extraction sockets, rh BMP-2/ ACS maintained alveolar ridge height while enhancing alveolar ridge width. Safety reports did not represent concerns for the proposed indications. Conclusions rh BMP-2/ ACS appears a promising alternative to autogenous bone grafts for alveolar ridge/maxillary sinus augmentation; dose and carrier optimization may expand its efficacy, use, and clinical application. [ABSTRACT FROM AUTHOR]
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- 2015
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30. Horizontal ridge augmentation of the atrophic anterior maxilla using rhBMP-2/ACS or autogenous bone grafts: a proof-of-concept randomized clinical trial.
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Freitas, Rubens Moreno, Susin, Cristiano, Spin‐Neto, Rubens, Marcantonio, Claudio, Wikesjö, Ulf M. E., Pereira, Luís Antônio Violin Dias, and Marcantonio, Elcio
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DENTAL materials , *TOMOGRAPHY , *DENTISTRY , *ACADEMIC medical centers , *AUTOGRAFTS , *BONES , *FISHER exact test , *MAXILLA , *HEALTH outcome assessment , *REGRESSION analysis , *RESEARCH funding , *T-test (Statistics) , *U-statistics , *RANDOMIZED controlled trials , *TREATMENT effectiveness , *DATA analysis software , *DESCRIPTIVE statistics , *THERAPEUTICS - Abstract
Aim To compare the effect of recombinant human bone morphogenetic protein-2 (rhBMP-2) in an absorbable collagen sponge carrier (ACS) with autogenous bone graft for augmentation of the edentulous atrophic anterior maxilla. Methods Twenty-four subjects were enrolled in a randomized, controlled, parallel-group, open-label clinical trial. Subjects either received rhBMP-2/ACS (1.5 mg/ml) or particulated autogenous bone harvested from the mandibular retromolar region. A titanium-mesh was used to provide space and wound stability. A guide was used to standardize clinical recordings using an analogue caliper. Alveolar ridge width was also assessed using cone-beam computed tomography. Results rhBMP-2/ACS yielded significantly greater radiographic horizontal bone gain compared with autogenous bone graft at immediate subcrestal levels (1.5 ± 0.7 versus 0.5 ± 0.9 mm; p = 0.01); non-significant differences were observed at mid- (2.9 ± 0.8 versus 2.9 ± 0.9 mm; p = 0.98) and apical (1.7 ± 0.9 versus 1.8 ± 1.1 mm; p = 0.85) crestal levels. No significant differences in clinical horizontal bone gain were observed at 6 months between rhBMP-2/ACS and autogenous bone graft (3.2 ± 0.9 mm versus 3.7 ± 1.4 mm; p = 0.31). Sixty-two implants were placed after 6 month of healing with no significant differences between groups for number of implants, implant size, primary stability and survival. Conclusions rhBMP-2/ACS appears a realistic alternative for augmentation of the edentulous atrophic anterior maxilla. [ABSTRACT FROM AUTHOR]
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- 2013
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31. Antimicrobial Brazilian Propolis (EPP-AF) Containing Biocellulose Membranes as Promising Biomaterial for Skin Wound Healing.
- Author
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da Silva Barud, Hernane, de Araújo Júnior, Adalberto Miguel, Sybele Saska, Mestieri, Letícia Boldrin, Campos, Juliana Alvares Duarte Bonini, de Freitas, Rubens Moreno, Ferreira, Nathália Ursoli, Nascimento, Andresa Piacezzi, Miguel, Felipe Galeti, de Oliveira Lima Leite Vaz, Mirela Mara, Barizon, Edna Aparecida, Marquele-Oliveira, Franciane, Gaspar, Ana Maria Minarelli, Ribeiro, Sidney José Lima, and Berretta, Andresa Aparecida
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ANALYSIS of variance ,ANIMAL experimentation ,BIOPHYSICS ,CELLULOSE ,RESEARCH methodology ,BIOLOGICAL membranes ,STATISTICS ,WOUND healing ,QUALITATIVE research ,PLANT extracts ,DATA analysis - Abstract
Among remarkable discoveries concerning propolis, such as antifungal, antiviral, and antioxidant activities, its anti-inflammatory, and mainly its antibacterial, properties deserve special attention when skin wound healing is concerned. Based on this and knowing the distinctive performance of bacterial (BC) membranes on wound healing, in this work it is proposed to demonstrate the potent antimicrobial activity and wound healing properties of a novel propolis containing biocellulose membrane. The obtained pro-polis/BC membrane was able to adsorb propolis not only on the surface, but also in its interstices demonstrated by scanning electron microscopy, X-ray diffraction, Fourier transform infrared (FT-IR) spectroscopy, and thermogravidimetric assays. Additionally, the polyphenolic compounds determination and the prominent antibacterial activity in the membrane are demonstrated to be dose dependent, supporting the possibility of obtaining propolis/BC membranes at the desired concentrations, taking into consideration its application and its skin residence time. Finally, it could be suggested that propolis/BC membrane may favor tissue repair in less time and more effectively in contaminated wounds. [ABSTRACT FROM AUTHOR]
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- 2013
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32. Avaliação da alteração da microbiota bucal de pacientes internados em unidade de terapia intensiva
- Author
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Miléo, Fernanda Couto, Pontifícia Universidade Católica do Paraná, Universidade Estadual de Ponta Grossa, Instituto Latino Americano de Pesquisa e Ensino Odontológico., Bandeca, Shelon Cristina Souza, Esmerino, Luís Antônio, Bedran, Telma Blanca Lombardo, Silveira, Rafael Bertoni da, Freitas, Rubens Moreno de, and Olchanheski, Luiz Ricardo
- Subjects
Intensive Care Units ,CIENCIAS DA SAUDE [CNPQ] ,Biofilms ,Pneumonia Associada à Ventilação Mecânica ,Pneumonia, Ventilator-Associated ,Biofilmes ,Unidades de Terapia Intensiva - Abstract
Submitted by Angela Maria de Oliveira (amolivei@uepg.br) on 2020-04-24T22:02:31Z No. of bitstreams: 2 license_rdf: 811 bytes, checksum: e39d27027a6cc9cb039ad269a5db8e34 (MD5) Fernanda Couto Mileo.pdf: 5137741 bytes, checksum: 96db0f468c43d65cfb8e5f8e0e633137 (MD5) Made available in DSpace on 2020-04-24T22:02:31Z (GMT). No. of bitstreams: 2 license_rdf: 811 bytes, checksum: e39d27027a6cc9cb039ad269a5db8e34 (MD5) Fernanda Couto Mileo.pdf: 5137741 bytes, checksum: 96db0f468c43d65cfb8e5f8e0e633137 (MD5) Previous issue date: 2019-07-12 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior Na Unidade de Terapia Intensiva (UTI), a microbiota bucal dos pacientes em uso de intubação orotraqueal (IOT) pode sofrer alterações e acarretar na presença de microrganismos antes incomuns, surgirem e causarem a Pneumonia Associada à Ventilação Mecânica (PAV). Por essa razão, o estudo tem como objetivos: avaliar a presença de Pseudomonas aeruginosa, Escherichia coli, Klebsiella pneumoniae, Staphylococcus aureus e Enterococcus spp. na cavidade bucal dos pacientes com IOT internados na UTI do Hospital Universitário Regional dos Campos Gerais em três momentos: inicial – 0 hora, 48 horas e 96 horas do internamento e relacioná-los com o diagnóstico de PAV, além de comparar dentados com desdentados, realizar a análise semi-quantitativa dos quatro meios utilizados e compará-los entre si; avaliar a resistência dos microrganismos através de antibiogramas; e associar a presença destes com o percentual de alta e mortalidade. A pesquisa é caracterizada como um estudo observacional, prospectivo e longitudinal, realizada com amostra de 20 pacientes, dividida em dois grupos: desdentados e dentados, em uso de IOT na UTI. O material biológico foi coletado em dorso de língua com escova citológica estéril, e seguidamente semeado em meio de cultura seletivo: meio Bile esculina com azida para Enterococcus spp., meio Cetrimide para Pseudomonas aeruginosa, meio Manitol sal para Staphylococcus aureus e meio MacConkey para Escherichia coli e Klebsiella pneumoniae. Decorrido 48 horas em estufa, os meios foram avaliados macroscopicamente, através da análise semi-quantitativa, e os morfotipos coloniais que cresceram foram armazenados, descritos e enumerados, para então ser realizados os testes bioquímicos específicos e confirmar as espécies bacterianas. Para os microrganismos com crescimento em meio Bile esculina foram realizados os testes de catalase e NaCl 6,5%; para os que tiveram crescimento em meio Cetrimide os testes foram da motilidade, oxidase, caldo BHI e gelatina; microrganismos que cresceram em meio Manitol sal foram testados com gram, catalase, oxidase, Dnase e MRVP; e aos que cresceram em meio MacConkey os testes elegidos foram EPM, lisina, MIO, citrato Simmons e Rhamnose. Após serem identificados, foram feitos os testes de sensibilidades aos antimicrobianos. Os resultados encontrados demonstram que não há diferença significativa entre os três tempos de coleta para cada um dos meios utilizados e para a resistência bacteriana nos diferentes tempos quando avaliados todos os microrganismos conjuntamente. Entretanto, o trabalho verificou diferença significativa na comparação entre a microbiota de pacientes dentados e desdentados no tempo de 96 horas, entre o escore de crescimento bacteriano nos diferentes meios e também que existe uma associação significativa entre a presença de bactérias e a taxa de óbitos dos pacientes intubados da UTI. Perante os dados obtidos, pode-se concluir que é de suma importância a inserção do cirurgião-dentista na equipe interdisciplinar das unidades hospitalares, principalmente da UTI, para reduzir as taxas de mortalidade associada com a presença de bactérias patogênicas na cavidade bucal. In the Intensive Care Unit (ICU), the oral microbiota of patients using orotracheal intubation (OTI) can undergo changes and result in the presence of previously uncommon microorganisms, which may arise and cause Pneumonia Associated with Mechanical Ventilation (VAP). For this reason, the study aims to: evaluate the presence of Pseudomonas aeruginosa, Escherichia coli, Klebsiella pneumoniae, Staphylococcus aureus and Enterococcus spp. in the oral cavity of patients with OTI admitted to the ICU of the Hospital Universitário Regional dos Campos Gerais in three moments: initial - 0 hour, 48 hours and 96 hours of hospitalization and relate them to the diagnosis of VAP, in addition to comparing teeth with toothless, perform the semi-quantitative analysis of the four media used and compare them with each other; evaluate the resistance of microorganisms through antibiograms; and associate their presence with the percentage of discharge and mortality. The research is characterized as an observational, prospective and longitudinal study, conducted with a sample of 20 patients, divided into two groups: toothless and toothed, using IOT in the ICU. The biological material was collected on the back of the tongue with a sterile cytological brush, and then sown in selective culture medium: Bile esculin medium with azide for Enterococcus spp., Cetrimide medium for Pseudomonas aeruginosa, Mannitol salt for Staphylococcus aureus and MacConkey medium for Escherichia coli and Klebsiella pneumoniae. After 48 hours in the greenhouse, the media were evaluated macroscopically, through semi-quantitative analysis, and the colonial morphotypes that grew up were stored, described and listed, so that specific biochemical tests could be carried out and the bacterial species confirmed. For microorganisms growing in Bile esculin medium, catalase and 6.5% NaCl tests were performed; for those who grew in Cetrimide, the tests were for motility, oxidase, BHI broth and gelatin; microorganisms that grew in mannitol salt medium were tested with gram, catalase, oxidase, Dnase and MRVP; and those grown in MacConkey medium, the chosen tests were EPM, lysine, MIO, Simmons citrate and Rhamnose. After being identified, antimicrobial sensitivity tests were performed. The results found demonstrate that there is no significant difference between the three collection times for each of the media used and for bacterial resistance at different times when all microorganisms were evaluated together. However, the study found a significant difference in the comparison between the microbiota of toothed and toothless patients over 96 hours, between the bacterial growth score in different media and also that there is a significant association between the presence of bacteria and the death rate of the patients. intubated ICU patients. In view of the data obtained, it can be concluded that the insertion of the dental surgeon in the interdisciplinary team of the hospital units, especially the ICU, is of utmost importance to reduce the mortality rates associated with the presence of pathogenic bacteria in the oral cavity.
- Published
- 2019
33. Histological analysis and gene expression profile following augmentation of the anterior maxilla using rhBMP-2/ACS versus autogenous bone graft.
- Author
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de Freitas RM, Susin C, Tamashiro WM, Chaves de Souza JA, Marcantonio C, Wikesjö UM, Pereira LA, and Marcantonio E Jr
- Subjects
- Alveolar Ridge Augmentation, Bone Morphogenetic Protein 2, Bone Morphogenetic Proteins, Collagen, Humans, Recombinant Proteins, Transcriptome, Transforming Growth Factor beta, Maxilla
- Abstract
Aim: The objective of this report was to present histological characteristics and gene expression profile of newly formed bone following horizontal augmentation of the atrophic anterior maxilla using recombinant human bone morphogenetic protein-2 in an absorbable collagen sponge carrier (rhBMP-2/ACS) versus an autogenous bone graft (ABG)., Methods: Bone core biopsies from 24 subjects participating in a randomized clinical trial were obtained at dental implant placement, 6 months following alveolar ridge augmentation using rhBMP-2/ACS (rhBMP-2 at 1.5 mg/ml; total dose 4.2 mg) or a particulate ABG harvested from the mandibular retro-molar region. A titanium mesh was used to provide wound stability and space for bone formation. Analysis included histological/histometric observations and gene expression profile of the newly formed bone., Results: rhBMP-2/ACS yielded bone marrow rich in capillaries, undifferentiated cells and bone lining cells compared with the ABG (p = 0.002). Whereas no significant differences were observed in total bone fraction (p = 0.53), non-vital bone particles trapped in lamellar vital bone were observed in the ABG group (p < 0.001). Real-time PCR showed greater BMP-2 and RUNX2 expression for rhBMP-2/ACS over the ABG (p = 0.001 and 0.0021, respectively), while the ABG exhibited greater expression of RANKL:OPG, BSP and OPN over rhBMP-2/ACS (p = 0.01, 0.005 and 0.0009, respectively)., Conclusions: Our observations suggest that formative biological processes explain bone formation following implantation of rhBMP-2/ACS, whereas remodelling, resorptive/formative processes, characterizes sites receiving ABGs., (© 2016 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.)
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- 2016
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34. Histological evaluation of chitosan-based biomaterials used for the correction of critical size defects in rat's calvaria.
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Spin-Neto R, de Freitas RM, Pavone C, Cardoso MB, Campana-Filho SP, Marcantonio RA, and Marcantonio E Jr
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- Animals, Male, Osteogenesis drug effects, Rats, Biocompatible Materials pharmacology, Chitosan pharmacology, Skull drug effects, Skull pathology
- Abstract
Chitosan, a biopolymer obtained from chitin, and its derivates, such as chitosan hydrochloride, has been reported as wound healing accelerators and as possible bone substitutes for tissue engineering, and therefore these substances could be relevant in dentistry and periodontology. The purpose of this investigation was to make a histological evaluation of chitosan and chitosan hydrochloride biomaterials (gels) used in the correction of critical size bone defects made in rat's calvaria. Bone defects of 8 mm in diameter were surgically created in the calvaria of 50 Holtzman (Rattus norvegicus) rats and filled with blood clot (control), low molecular weight chitosan, high molecular weight chitosan, low molecular weight chitosan hydrochloride, and high molecular weight chitosan hydrochloride, numbering 10 animals, divided into two experimental periods (15 and 60 days), for each biomaterial. The histological evaluation was made based on the morphology of the new-formed tissues in defect's region, and the results indicated that there was no statistical difference between the groups when the new bone formation in the entire defect's area were compared (p > 0.05) and, except in the control groups, assorted degrees of inflammation could be seen. In conclusion, chitosan and chitosan hydrochloride biomaterials used in this study were not able to promote new bone formation in critical size defects made in rat's calvaria.
- Published
- 2010
- Full Text
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