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

Influence of Liquid Lubrication on the Screw-Joint Stability of Y-TZP Implant Abutment Systems

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Author(s):
Basilio, Mariana de Almeida [1] ; Abi-Rached, Filipe de Oliveira [1] ; Butignon, Luis Eduardo [2] ; Arioli Filho, Joao Neudenir [1]
Total Authors: 4
Affiliation:
[1] UNESP Univ Estadual Paulista, Dept Dent Mat & Prosthodont, Araraquara Sch Dent, Sao Paulo - Brazil
[2] PI Branemark Inst, Dept Prosthodont, Sao Paulo - Brazil
Total Affiliations: 2
Document type: Journal article
Source: JOURNAL OF PROSTHODONTICS-IMPLANT ESTHETIC AND RECONSTRUCTIVE DENTISTRY; v. 26, n. 8, p. 656-658, DEC 2017.
Web of Science Citations: 3
Abstract

PurposeTo evaluate the effectiveness of abutment screws coated with liquid Vaseline on the screw-joint stability of yttria-stabilized tetragonal zirconia (Y-TZP) abutment systems. Materials and MethodsForty Y-TZP prefabricated abutments, 20 Neodent and 20 Bionnovation, were tightened to 20 Ncm on their respective external hexagon implants, and divided into four groups (n = 10) according to the screws: coated with Vaseline or uncoated. The removal torque (RT) value of the abutment screw was measured before and after loading. A cyclic loading (0.5 x 10(6) cycles; 15 Hz) between 11 and 211 N was applied. Means were compared using a repeated-measures ANOVA ( = 0.05). ResultsThere was no significant difference between coated and uncoated screws (p = 0.822). Significant differences were found between the abutment systems (p < 0.001). There was a significant effect of cyclic loading (p < 0.001). ConclusionsCoated and uncoated screws presented similar effectiveness in maintaining preload. Clinical RelevanceThe liquid lubricant used in this study does not influence the stability of Y-TZP single-implant restorations. (AU)

FAPESP's process: 10/06651-5 - Comparative analysis of the stability of the joint bolted in zirconia abutments over implants after cyclic loading
Grantee:João Neudenir Arioli Filho
Support Opportunities: Regular Research Grants