Hu Kai-Fang, Lin Szu-Wei, Lin Ying-Chu, Jeng Jiiang-Huei, Huang Yu-Ting, Liu Pei-Feng, Tseng Ching-Jiunn, Chou Yu-Hsiang
Institute of Clinical Medicine, National Yang Ming Chiao Tung University, Taipei 112, Taiwan.
Department of Dentistry, Division of Periodontics, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan.
J Pers Med. 2021 Oct 8;11(10):1011. doi: 10.3390/jpm11101011.
The aim of this study was to use a cone-beam computed tomography (CBCT) to assess changes in alveolar bone width around dental implants at native and reconstructed bone sites before and after implant surgery. A total of 99 implant sites from 54 patients with at least two CBCT scans before and after implant surgery during 2010-2019 were assessed in this study. Demographic data, dental treatments and CBCT scans were collected. Horizontal alveolar bone widths around implants at three levels (subcrestal width 1 mm (CW1), subcrestal width 4 mm (CW4), and subcrestal width 7 mm (CW7)) were measured. A -value of < 0.05 indicated statistically significant differences. The initial bone widths (mean ± standard deviation (SD)) at CW1, CW4, and CW7 were 6.98 ± 2.24, 9.97 ± 2.64, and 11.33 ± 3.00 mm, respectively, and the postsurgery widths were 6.83 ± 2.02, 9.58 ± 2.55, and 11.19 ± 2.90 mm, respectively. The change in bone width was 0.15 ± 1.74 mm at CW1, 0.39 ± 1.12 mm at CW4 ( = 0.0008), and 0.14 ± 1.05 mm at CW7. A statistically significant change in bone width was observed at only the CW4 level. Compared with those at the native bone sites, the changes in bone width around implants at reconstructed sites did not differ significantly. A significant alveolar bone width resorption was found only at the middle third on CBCT scans. No significant changes in bone width around implants were detected between native and reconstructed bone sites.
本研究的目的是使用锥形束计算机断层扫描（CBCT）来评估种植手术前后天然骨和重建骨部位牙种植体周围牙槽骨宽度的变化。本研究评估了2010年至2019年期间54例患者的99个种植部位，这些患者在种植手术前后至少有两次CBCT扫描。收集了人口统计学数据、牙科治疗情况和CBCT扫描图像。测量了种植体周围三个水平（种植体下1 mm宽度（CW1）、种植体下4 mm宽度（CW4）和种植体下7 mm宽度（CW7））的水平牙槽骨宽度。P值<0.05表示差异具有统计学意义。CW1、CW4和CW7处的初始骨宽度（平均值±标准差（SD））分别为6.98±2.24、9.97±2.64和11.33±3.00 mm，术后宽度分别为6.83±2.02、9.58±2.55和11.19±2.90 mm。CW1处骨宽度变化为0.15±1.74 mm，CW4处为0.39±1.12 mm（P = 0.0008），CW7处为0.14±1.05 mm。仅在CW4水平观察到骨宽度有统计学意义的变化。与天然骨部位相比，重建部位种植体周围的骨宽度变化无显著差异。在CBCT扫描中，仅在中三分之一处发现牙槽骨宽度有显著吸收。天然骨和重建骨部位种植体周围的骨宽度未检测到显著变化。
