The Effects of Different Loading Times on the Bone Response Around Dental Implants: A Histomorphometric Study in Dogs

Autor(es)

Jayme, Sergio Jorge ; de Oliveira, Rafael Ramos ^[1] ; Muglia, Valdir Antonio ; Novaes, Jr., Arthur Belem ^[1] ; Ribeiro, Ricardo Faria ^[2]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Dept Buccomaxillofacial Surg & Traumatol & Period, Sch Dent Ribeirao Preto, BR-14040904 Ribeirao Preto, SP - Brazil

^[2] Univ Sao Paulo, Fac Odontol Ribeirao Preto, Dept Dent Mat & Prosthet, Sch Dent Ribeirao Preto, BR-14040904 Ribeirao Preto, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: INTERNATIONAL JOURNAL OF ORAL & MAXILLOFACIAL IMPLANTS; v. 25, n. 3, p. 473-481, MAY-JUN 2010.
• Citações Web of Science: 11

Resumo

Purpose: The aim of this study was to evaluate, through histomorphometric analysis, the effect that different loading times would have on the bone response around implants. Materials and Methods: Three Replace Select implants were placed on each side of the mandible in eight dogs (n = 48 implants). One pair of implants was selected for an immediate loading protocol (IL). After 7 days, the second pair of implants received prostheses for an early loading protocol (EL). Fourteen days after implant placement, the third pair of implants received prostheses for advanced early loading (AEL). Following 12 weeks of prosthetics, counted following the positioning of the metallic crowns for the AEL group, the animals were sacrificed and the specimens were prepared for histomorphometric analysis. The differences between loading time in the following parameters were evaluated through analysis of variance: bone-to-implant contact, bone density, and crestal bone loss. Results: The mean percentage of bone-to-implant contact for IL was 77.9% +/- 1.71%, for EL it was 79.25% +/- 2.11%, and for AEL it was 79.42% +/- 1.49%. The mean percentage of bone density for IL was 69.97% +/- 3.81%, for EL it was 69.23% +/- 5.68%, and for AEL it was 69.19% +/- 2.90%. Mean crestal bone loss was 1.57 +/- 0.22 mm for IL, 1.23 +/- 0.19 mm for EL, and 1.17 +/- 0.32 mm for AEL. There was no statistical difference for any of the parameters evaluated (P > .05). Conclusion: Different early loading times did not seem to significantly affect the bone response around dental implants. INT J ORAL MAXILLOFAC IMPLANTS 2010;25:473-481 (AU)

• Processo FAPESP: 06/04747-0 - Estudo em animais sobre carga imediata em mandíbulas parcialmente edêntulas utilizando implantes replace select tapered com superfície tiunite TM
• Beneficiário: Ricardo Faria Ribeiro
• Modalidade de apoio: Auxílio à Pesquisa - Regular