Influência do tempo e do tratamento da superfície do parafuso protético de retenção do pilar nos valores de destorque

• Ano de defesa: 2009
• Autor(a) principal: Machado, Emerson Teixeira
• Orientador(a): Rossetti, Paulo Henrique Orlato
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: IASCJ - Universidade Sagrado Coração
• Programa de Pós-Graduação: Implantologia
• Departamento: Ciências da Saúde e Biológicas
• País: BR
• Palavras-chave em Português: IMPLANTES DENTÁRIOS; PRÓTESE SOBRE IMPLANTES; PARAFUSO; TRATAMENTO DE SUPERFÍCIE
• Palavras-chave em Inglês: DENTAL IMPLANTS; IMPLANT-SUPPORTED FIXED PROSTHESIS; SCREW; SURFACE TREATMENT
• Área do conhecimento CNPq: CIENCIAS DA SAUDE::ODONTOLOGIA
• Link de acesso: http://tede2.usc.br:8080/jspui//handle/tede/67

Problem: The screw loosening on abutment of retention represents a risk factor in implants prosthodontics. Purpose: The aim of this study was verify the torque of detach the abutment screw with two types of surface treatment to compared the screw without treatment. Material and Method: External hexagon implants (13mm-length, 4,1mm-diameter) were mounted in PVC rings and received screw fixed partial prosthesis with one cantilever unit (10mm). All prostheses were cast Ni-Cr-Be alloy and torque tightened to 35N/cm. Detorques were registered immediate torque, after five and thirty- minute intervals. Results: Significant statistically differences between detorque group without treatment, DLC and future treatment were observed in the study. All samples and groups without surface treatment obtain less performance. Conclusion: The time and the abutment screw surface influences on detorque values. Clinical Implications: Abutments screw without treatment must be evitable in implants abutments.