Publicação: Influence of Liquid Lubrication on the Screw-Joint Stability of Y-TZP Implant Abutment Systems
Nenhuma Miniatura disponível
Data
2017-12-01
Orientador
Coorientador
Pós-graduação
Curso de graduação
Título da Revista
ISSN da Revista
Título de Volume
Editor
Tipo
Artigo
Direito de acesso
Acesso restrito
Resumo
Purpose: To 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 Methods: Forty 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 × 106 cycles; 15 Hz) between 11 and 211 N was applied. Means were compared using a repeated-measures ANOVA (α = 0.05). Results: There 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). Conclusions: Coated and uncoated screws presented similar effectiveness in maintaining preload. Clinical Relevance: The liquid lubricant used in this study does not influence the stability of Y-TZP single-implant restorations.
Descrição
Palavras-chave
Idioma
Inglês
Como citar
Journal of Prosthodontics, v. 26, n. 8, p. 656-658, 2017.
