Department of Implant Dentistry, Veiga de Almeida University, Rio de Janeiro, Brazil.
Int J Oral Maxillofac Implants. 2011 May-Jun;26(3):587-92.
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).
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).
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.
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.
本回顾性研究旨在评估将种植体-基台微间隙从内部六角种植体平台的外边缘向内移动（即平台转换配置）对相邻颈椎骨的影响。
选择了 26 名患者的便利样本，他们接受了 42 个 Frialit-2（登士柏-弗莱登塔尔）种植体进行单颗牙齿修复，并分为两组。一组遵循原始方案（对照组），另一组（研究组）则使用更窄的可更换部件。随访时间为 6 至 60 个月（平均 33.45 个月）。
对照组显示出明显的骨重塑（平均骨损失=2.30mm），所有重塑的嵴都位于种植体平台的根尖。相比之下，研究组（平台转换）的所有患者均显示出种植体平台冠方稳定的种植体边缘骨水平（平均骨损失=0.27）。
通过 Frialit-2 系统种植体的平台转换重新定位种植体-基台微间隙似乎是一种有效的方法，可以在所有情况下最大限度地减少边缘骨丧失。
