School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan.
Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, Boston, MA, USA.
Biomed Res Int. 2017;2017:7191534. doi: 10.1155/2017/7191534. Epub 2017 Oct 24.
The benefits and feasibility of platform switching have been discussed in several studies, reporting lesser crestal bone loss in platform-switched implants than in platform-matched implants. The aim of the present study was to observe the changes in vertical and horizontal marginal bone levels in platform-switched and platform-matched dental implants. 51 patients received 60 dental implants in the present study over a 1-year period. Measurement was performed between the implant shoulder and the most apical and horizontal marginal defect by periapical radiographs to examine the changes of peri-implant alveolar bone before and 12 months after prosthodontic restoration delivery. . These marginal bone measurements showed a bone gain of 0.23 ± 0.58 mm in the vertical gap and 0.22 ± 0.53 mm in the horizontal gap of platform matching, while in platform switching a bone gain of 0.93 ± 1 mm ( < 0.05) in the vertical gap and 0.50 ± 0.56 mm in the horizontal gap was found. The average vertical gap reduction from the baseline until 12 months was 0.92 ± 1.11 mm in platform switching and 0.29 ± 0.85 mm in platform matching ( < 0.05). Within the limitations of the present study, platform switching seemed to be more effective for a better peri-implant alveolar bone vertical and horizontal gap reduction at 1 year.
在几项研究中已经讨论了平台转换的益处和可行性，报告称平台转换种植体的嵴顶骨丢失少于平台匹配种植体。本研究的目的是观察平台转换和平台匹配牙科种植体的垂直和水平边缘骨水平的变化。在本研究中，51 名患者在 1 年内接受了 60 个牙科种植体。通过根尖放射线照片在种植体肩和最根尖和水平边缘缺陷之间进行测量，以检查修复体交付前和 12 个月后种植体周围牙槽骨的变化。这些边缘骨测量显示，在垂直间隙中骨获得了 0.23 ± 0.58 mm，在水平间隙中获得了 0.22 ± 0.53 mm，而在平台转换中，在垂直间隙中获得了 0.93 ± 1 mm（<0.05），在水平间隙中获得了 0.50 ± 0.56 mm。从基线到 12 个月，平台转换的平均垂直间隙减少量为 0.92 ± 1.11 mm，而平台匹配的平均垂直间隙减少量为 0.29 ± 0.85 mm（<0.05）。在本研究的限制范围内，平台转换似乎在 1 年内对更好的种植体周围牙槽骨垂直和水平间隙减少更有效。
