Peri-implant bone loss around platform-switched Morse taper connection implants: a prospective 60-month follow-up study
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- 作者：M. Cassetta ; michele.cassetta@uniroma1.it" class="auth_mail" title="E-mail the corresponding author ; A. Driver ; G. Brandetti ; S. Calasso
- 关键词：bone loss ; dental implant&ndash ; abutment design ; dental radiography ; prospective studies ; dental implant platform switching
- 刊名：International Journal of Oral and Maxillofacial Surgery
- 出版年：2016
- 出版时间：December 2016
- 年：2016
- 卷：45
- 期：12
- 页码：1577-1585
- 全文大小：1389 K
文摘
The aim of this study was to measure the crestal bone level changes at 60 months of follow-up and to evaluate the influence of biologically relevant, anatomical, and implant-related variables. A prospective study design was used. STROBE guidelines were followed. A total of 576 implants were inserted in 270 patients needing an implant-supported, partial, fixed dental prosthesis or a single crown. Standardized peri-apical radiographs were obtained at 2 months (time of implant–abutment connection and prosthetic loading) and 60 months of follow-up. Descriptive statistics were used and inter- and intra-examiner reliability determined. A mixed model was used to evaluate the predictor variables. The correlation among multiple implants inserted in a single patient was considered. Significance was assessed using the type 3 test. Sensitivity analyses, least-squares means analyses, t-tests, and χ2 tests were also conducted. The statistical analysis was performed at the implant level; P < 0.05 indicated statistical significance. At the 60-month follow-up, the mean marginal bone remodelling was −0.59 ± 1.34 mm (range −5.70 to 3.65 mm). Marginal bone loss was significantly influenced by implant depth, implant location, and the interactions implant depth × jaw, implant location × timing of implant placement, and jaw × implant diameter. At the 60-month follow-up, a low mean marginal bone loss was found, which was significantly higher with subcrestal implants and anterior implants.