Search

Objective: To examine the correlation between initial site‐specific characteristics of patients with multiple gingival recession defects and the outcome of root coverage therapy. Materials and Methods: Pretherapy and post‐therapy study models of 21 patients (154 teeth) with multiple gingival recession defects, treated with Vestibular Incision Subperiosteal Tunnel Access (VISTA), were optically scanned. Three‐dimensional analysis of superimposed preoperative and postoperative images was performed. Linear and surface root coverage were calculated and correlated to various clinical and/or anatomical parameters. A multilevel statistical analysis was conducted, adjusting for the correlation among multiple observations. Results: The mean percentages of linear root coverage were 96.2 ± 13.1% and 84.3 ± 14.4% for Miller Class I/II and Class III recessions, respectively. The mean percentages of root surface area coverage were 92.1 ± 12.0% and 78.6 ± 15.7% for Miller Class I/II and III defects, respectively. Root prominence, initial recession width and posterior tooth type were negatively correlated with linear and root surface area coverage. Initial recession depth was negatively correlated with root surface area coverage. Initial gingival margin thickness was positively associated with both linear and root surface area coverage. Conclusion: The results of the present study identified important positive and negative site‐specific characteristics that may have utility in predicting the outcome of root coverage. Clinical Significance: This study used sensitive 3‐dimensional digital analysis tools to examine the correlation between initial site‐specific characteristics of patients with multiple gingival recession defects and the outcome of periodontal root coverage therapy. Results demonstrated that initial root prominence, loss of interdental tissue (Miller Class III), molar tooth type, initial recession depth and width were negatively correlated with the outcome of periodontal root coverage achieved. Conversely, initial gingival margin thickness was associated with increased percentage of root coverage. These site‐specific characteristics may serve as important risk indicators to predict the outcome of root coverage procedure. [ABSTRACT FROM AUTHOR]

Objectives The aims of this study were to evaluate (i) the efficacy of ridge preservation and repair involving Socket KAP™ and Socket KAGE™ devices following tooth removal; and (ii) ridge contour changes at 6 months post-extraction in intact sockets and sockets with dehiscence defects. Material and methods Thirty-six patients required a total of 61 teeth to be extracted. Five cohorts were established with groups A-C involving intact sockets and groups D and E involving facial dehiscence: (A) Negative Control; (B) Socket KAP™ alone; (C) Anorganic Bovine Bone Mineral ( ABBM) + Socket KAP™; (D) Negative Control; and (E) ABBM + Socket KAP™ + Socket KAGE™. Preoperative CBCT and laser-scanned casts were obtained. Teeth segmented from preoperative CBCT were merged with study cast images to allow for digital removal of teeth from the casts. Volumetric measurements of ridge contour were performed. Images of preoperative and 6 months post-operative casts were superimposed to measure ridge contour changes. Results Post-extraction contour loss occurred in all sockets primarily in the crestal 3 mm but was also detected up to 6 mm from alveolar crest. For intact sockets, Socket KAP™ or Socket KAP™ + ABBM interventions led to greater percentages of remaining ridge contour when compared to controls. A significant difference favoring Socket KAP™ + Socket KAGE™ + ABBM treatment was observed for sockets with facial dehiscence when compared to controls. Conclusion Socket KAP™, with or without ABBM, significantly limited post-extraction ridge contour loss in intact sockets. In the absence of a group treated with only the Socket KAGE™, it is not possible to determine its efficacy, although the combination of Socket KAGE™ + Socket KAP™ + ABBM was effective in limiting post-extraction ridge contour loss in sockets with dehiscence defects. [ABSTRACT FROM AUTHOR]

Objectives The aims of this study were (i) to evaluate the efficacy of ridge preservation and repair procedures involving the application of Socket KAP™ and Socket KAGE™ devices following tooth removal and (ii) to evaluate alveolar bone volumetric changes at 6 months post-extraction in intact sockets or those with facial wall dehiscence defects using 3-dimensional pre- and postoperative CBCT data. Materials and Methods Thirty-six patients required 61 teeth extracted. Five cohorts were established: Group A: Intact Socket Negative Control Group B: Intact Socket + Socket KAP™ Group C: Intact Socket Filled with Anorganic Bovine Bone Mineral ( ABBM) + Socket KAP™ Group D: Facial Dehiscence Socket Negative Control Group E: Facial Dehiscence Socket Filled with ABBM + Socket KAP™ + Socket KAGE™. Preoperative CBCT scans were obtained followed by digital subtraction of the test teeth. At 6 months post-extraction, another CBCT scan was obtained. The pre- and postoperative scans were then superimposed, allowing highly accurate quantitative determination of the 3D volumetric alveolar bone volume changes from baseline through 6 months. Results Significant volumetric bone loss occurred in all sockets, localized mainly in the 0-3 mm zone apical to the ridge crest. For intact sockets, Socket KAP™ + ABBM treatment led to a statistically significant greater percentage of remaining mineralized tissue volume when compared to negative control group. A significant difference favoring Socket KAP™ + Socket KAGE™ + ABBM treatment was observed for sockets with facial dehiscence defects compared to the negative control group. Conclusions Socket KAP™, with ABBM, appears effective in limiting post-extraction volumetric bone loss in intact sockets, while Socket KAP™ + Socket KAGE + ABBM appears effective in limiting post-extraction bone loss in sockets with dehiscence defects. [ABSTRACT FROM AUTHOR]

Background Migration of a dental implant into the paranasal sinuses may be the result of sinus membrane perforation, loss of osseointegration, and lack of initial stability. The majority of displaced implants migrate into the maxillary sinus, which may cause sinusitis. Purpose The purpose of this study is to report an extremely rare ethmoid sinus migration of a dental implant after crestal approach in a resorbed posterior maxilla. Materials and Methods A 60-year old Korean male with a noncontributory medical history was referred from a local clinic to remove the migrated dental implant in the right ethmoid sinus. The patient had symptoms of mild sinusitis. The implant had been placed 6 months earlier through the bone-added transalveolar approach in a severely resorbed maxilla. Results The displaced implant was removed through the intraoral approach. A lateral window was made and an endoscopic surgery was performed to remove the implant. Healing was uneventful, and sinusitis symptom had ceased. Conclusion The crestal approach for severely resorbed posterior maxillae should be performed when there is a potential for primary stability. If bone quality is poor and initial stability cannot be achieved, lateral window sinus elevation procedure is a better option for successful implant placement. Migrated implant may be removed with antrostomy and endoscopic surgery. [ABSTRACT FROM AUTHOR]