Advanced search
Start date
Betweenand
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Effectiveness of Sealing Gel on Vertical Misfit at the Implant-Abutment Interface and Preload Maintenance of Screw- Retained Implant-Supported Prostheses

Full text
Author(s):
Seloto, Camila Berbel [1] ; Strazzi-Sahyon, Henrico Badaoui [1] ; dos Santos, Paulo Henrique [1] ; Assuncao, Wirley Goncalves [1]
Total Authors: 4
Affiliation:
[1] Sao Paulo State Univ UNESP, Aracatuba Sch Dent, Dept Dent Mat & Prosthodont, Jose Bonifacio 1193, BR-16015050 Aracatuba, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: INTERNATIONAL JOURNAL OF ORAL & MAXILLOFACIAL IMPLANTS; v. 35, n. 3, p. 479-484, MAY-JUN 2020.
Web of Science Citations: 0
Abstract

Purpose: This in vitro study evaluated the effectiveness of a sealing agent on vertical misfit of the implant-abutment interface in an external hexagon implant system before and after mechanical cyclic loading. Effects on preload maintenance of retaining screws after mechanical cycling were also assessed. Materials and Methods: External hexagon implant systems were divided into two groups (n = 12) according to the presence of an anaerobic sealing gel (control group-no sealing gel; experimental group-sealing gel applied). A prefabricated UCLA abutment was attached to the external hexagon implant with a digital torque wrench in accordance with the recommendations of the manufacturer. Specimens were tested through mechanical cyclic loading (1 x 10(6) cycles, 2 Hz, and 130 N). Vertical misfit of the implant-abutment interface was analyzed using a stereomicroscope, and reverse torque values were obtained using a digital wrench. Misfit and reverse torque data were measured and analyzed via analysis of variance (ANOVA) and the Tukey least significant difference test (alpha = .05). Results: The sealing gel promoted lower vertical misfit values in the test group after mechanical cycling compared with before cycling (P = .009). The control group showed lower reverse torque values for retaining screws compared with the initial torque after mechanical cyclic loading (P < .0001). However, sealing gel application promoted higher reverse torque values in the test group postcycling (P = .0003). Conclusion: Anaerobic sealing agent application improved vertical misfit of the implant-abutment interface and preload maintenance of screw-retained implant-supported prostheses post-mechanical cycling. (AU)

FAPESP's process: 15/11617-4 - Evaluation of the efficacy of a gel sealant in sealing abutment of inferface / implant and maintaining the preload of retaining screws
Grantee:Camila Berbel Seloto
Support type: Scholarships in Brazil - Master