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  • Title: Radiographic evaluation of marginal bone level around internal-hex implants with switched platform: a clinical case report series.
    Author: de Almeida FD, Carvalho AC, Fontes M, Pedrosa A, Costa R, Noleto JW, Mourão CF.
    Journal: Int J Oral Maxillofac Implants; 2011; 26(3):587-92. PubMed ID: 21691606.
    Abstract:
    PURPOSE: The purpose of this retrospective investigation was to evaluate the influence on the adjacent cervical bone of moving the implant-abutment microgap inward from the outer edge of an internal-hex implant platform (ie, a platform-switched configuration). MATERIALS AND METHODS: A convenience sample of 26 patients received 42 Frialit-2 (Dentsply-Friadent) implants for single tooth replacement and were divided into two groups. One group followed the original protocol (control group), and the other (study group) received narrower replaceable components. Follow-up time varied between 6 and 60 months (mean, 33.45 months). RESULTS: The control group showed noticeable bone remodeling (mean bone loss = 2.30 mm), and all the remodeled crests were apical to the implant platform. In contrast, all patients in the study (platform-switched) group showed stable levels (mean bone loss = 0.27) of the peri-implant crestal bone, coronal to the implant platform. CONCLUSION: The relocation of the implant-abutment microgap through platform switching with Frialit-2 System implants seems to be an effective means to minimize marginal bone loss in all circumstances employed.
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