Cléverson O Silva

Use of modified lip repositioning technique associated with esthetic crown lengthening for treatment of excessive gingival display: A case report of multiple etiologies.

Excessive gingival display during smile can result in compromised esthetics. This study aims to report a case of excessive gingival display with multiple etiologies treated by means of modified lip repositioning technique associated with esthetic crown lengthening. A 23-year-old female patient, with 5-mm gingival display during smile caused by altered passive eruption and hypermobility of the upper lip, underwent the modified lip repositioning technique associated with gingivectomy followed by flap elevation and ostectomy/osteoplasty. Seven months after the second procedure, the patient had her esthetic complaint solved appearing stable in the observation period. The modified lip repositioning technique is an effective procedure employed to reduce gingival display and when associated with esthetic clinical crown lengthening, can appropriately treat cases of gummy smile.

Correlation between clinical and histopathological diagnoses in periapical inflammatory lesions.

AIM   The purpose of the present study was to evaluate the correlation between clinical and histopathological diagnoses of periapical inflammatory lesions, focusing mainly on cystic conditions. METHODS   Files dating from 1998 to 2006 at the Oral Pathology Laboratory, School of Dentistry, Alfenas Federal University, Brazil, were reviewed to identify cases with histopathological diagnoses of periapical inflammatory lesions. A total of 1788 files were analyzed, and 255 cases were identified with clinical diagnoses of periapical inflammatory lesions. RESULTS   The most prevalent clinical diagnosis was apical periodontal cyst (59%), followed by periapical granuloma (20%), and dentoalveolar abscess (2%). After histopathological analysis, 53% of the cases represented apical periodontal cyst, 42% periapical granuloma, and 5% dentoalveolar abscess. CONCLUSIONS   The outcomes of the present study show a high prevalence of periapical cysts among periapical inflammatory lesions. Moreover, this study highlights the importance of histopathological evaluation for the correct diagnosis of periapical inflammatory lesions.

Assessing compatibility and vertical fitting between implants and prosthetic components of different brands

Introduction: Dental implants have been successfully used and increasingly included in oral rehabilitation and planning. Several dental companies are responsible for fabricating implants and prosthetic components. Objective: his paper aims at assessing the itting between prosthetic components and external hexagon implants (Brånemark) used in a single system or between systems. Methods: he following brands were assessed: Signo Vinces, Sin and Conexão. he implants were placed in acrylic resin, whereas the prosthetic components underwent a 20 N/cm2 torque following the manufacturer’s instructions. Torque was measured by means of a digital torque gauge and both implants and prosthetic components were assessed by means of a light microscope. Results: he combinations between diferent brands had good average itting values between the prosthetic component and the implant. he group with the highest values had 16.83 mm of unitting, probably due to the fact that one out of the six samples of this group had incompatible measures in comparison to the other samples as a result of an isolated alteration in the sample. Conclusion: here were no statistically signiicant diferences in terms of unitting between the prosthetic component and the implant which were all considered compatible.