School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 10692, Taiwan.
Department of Dentistry, Chang Gung Memorial Hospital, Taipei 10488, Taiwan.
Int J Environ Res Public Health. 2019 Jul 18;16(14):2570. doi: 10.3390/ijerph16142570.
To describe remodeling of the mesial and distal marginal bone level around platform-switched (PS) and platform-matched (PM) dental implants that were sandblasted with large grit and etched with acid over a three-year period.
Digital periapical radiographs were obtained at the following time-points: during Stage I of the surgical placement of dental implants, before loading, immediately after loading (baseline), and one, three, six, 12, and 36 months after loading for measuring the horizontal and vertical marginal bone levels.
Sixty implants were successfully osseointegrated during the overall observation period. Vertical marginal bone levels for the PS and PM dental implants were 0.78 ± 0.77 and 0.98 ± 0.81 mm, respectively, whereas the horizontal marginal bone levels for the PS and PM implants were 0.84 ± 0.45 and 0.98 ± 0.68 mm, respectively. During the time leading up to the procedure until 36 months after the procedure, the average vertical marginal bone level resulted in less bone loss for the PS and PM groups-0.96 ± 1.28 and 0.30 ± 1.15 mm, respectively ( < 0.05). The mean levels of the horizontal marginal bone also showed increases of 0.48 ± 1.01 mm in the PS and 0.37 ± 0.77 mm in the PM groups from the time before loading until 36 months after the procedure. However, these increases were not statistically significant ( > 0.05).
PS dental implants appeared to be more effective than PM implants for minimizing the mean marginal vertical and horizontal marginal bone loss during the three-year period. Regardless of which abutment connection was used, the dental implant in the present retrospective investigation exhibited minimal marginal bone remodeling, thus indicating long-term stability.
描述经过喷砂酸蚀处理的平台转换（PS）和平台匹配（PM）种植牙在三年内近远中边缘骨水平的改建情况。
在种植牙一期手术放置、加载前、加载即刻（基线）、加载后 1、3、6、12 和 36 个月时，获取数字根尖片，测量水平和垂直边缘骨水平。
在整个观察期内，60 个种植体成功骨整合。PS 和 PM 种植牙的垂直边缘骨水平分别为 0.78 ± 0.77mm 和 0.98 ± 0.81mm，而 PS 和 PM 种植体的水平边缘骨水平分别为 0.84 ± 0.45mm 和 0.98 ± 0.68mm。在手术前到手术后 36 个月的这段时间里，PS 和 PM 组的平均垂直边缘骨水平导致骨量减少，分别为-0.96 ± 1.28mm 和-0.30 ± 1.15mm（<0.05）。水平边缘骨的平均水平也显示，PS 组从加载前到手术后 36 个月增加了 0.48 ± 1.01mm，PM 组增加了 0.37 ± 0.77mm。然而，这些增加没有统计学意义（>0.05）。
PS 种植牙在三年内似乎比 PM 种植牙更能有效减少平均边缘垂直和水平骨丢失。无论使用哪种基台连接，本回顾性研究中的种植牙都表现出最小的边缘骨重塑，表明具有长期稳定性。
