Surface Characterization and In Vivo Evaluation of Dual Acid-Etched and Grit-Blasted/Acid-Etched Implants in Sheep

Autor(es)

Yoo, Daniel ^[1] ; Marin, Charles ^[2] ; Freitas, Gileade ^[1] ; Tovar, Nick ^[3] ; Bonfante, Estevam A. ^[4] ; Teixeira, Hellen S. ^[1] ; Janal, Malvin N. ^[5] ; Coelho, Paulo G. ^{[1, 6, 7]}

Afiliação do(s) autor(es)

^[1] NYU, Coll Dent, Dept Biomat & Biomimet, New York, NY - USA

^[2] UNIGRANRIO Univ Sch Hlth Sci, Postgrad Program Dent, Rio De Janeiro - Brazil

^[3] NYU, Coll Dent, Dept Biomat & Biomimet, Mat Anal & Testing Lab, New York, NY - USA

^[4] Univ Sao Paulo, Dept Prosthodont, Bauru Coll Dent, Sao Paulo - Brazil

^[5] NYU, Coll Dent, Dept Epidemiol & Hlth Promot, New York, NY - USA

^[6] NYU, Coll Dent, Dept Periodontol & Implant Dent, Res, New York, NY - USA

^[7] New York Univ Abu Dhabi, Div Engn, Abu Dhabi - U Arab Emirates

• Tipo de documento: Artigo Científico
• Fonte: IMPLANT DENTISTRY; v. 24, n. 3, p. 256-262, JUN 2015.
• Citações Web of Science: 7

Resumo

Purpose: Dual acid-etching is widely used to modify dental implant topography and enhance early bone healing. This study evaluated the histomorphometric, biomechanical, and histological bone response to acid-etched (AA) in comparison with grit-blasted/acid-etched (GB) and machined control (C) implants within sites of relatively low-bone remodeling rates. Materials and Methods: Implant surface topography was evaluated by scanning electron microscopy and optical interferometry (IFM). Six adult male sheep (n = 6) received 72 Ti-6Al-4V implants (n = 24 per surface) in both ilium (n = 12 per bone bilaterally). The implants remained for 3 and 6 weeks in vivo. The histomorphometric parameters bone-implant contact (BIC) and bone area fraction occupancy (BAFO) were evaluated. Biomechanical analysis consisted of torque-to-interface failure. Results: IFM analysis showed the highest average surface roughness for GB and the highest density of summits and developed surface area percentage (P < 0.01) for AA. No difference was observed in BAFO for all groups in 3 and 6 weeks. Increased BIC and torque resistance were observed for AA implants at both time points after implantation. Conclusions: Overall, improved bone-to-implant response was observed for the AA implant surface. (AU)

• Processo FAPESP: 10/06152-9 - Confiabilidade e modos de fratura de próteses fixas em compósitos indiretos com e sem infra-estrutura CAD/CAM sobre implantes
• Beneficiário: Estevam Augusto Bonfante
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado