Department of Oral and Maxillofacial Radiology, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Department of Periodontology, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
J Long Term Eff Med Implants. 2022;32(2):7-16. doi: 10.1615/JLongTermEffMedImplants.2021039375.
This study determined the influential factors in buccal and lingual plate perforation around dental implants using cone-beam computed tomography (CBCT). In this retrospective, cross-sectional study, CBCT scans of dental implants taken for purposes not related to this study from 2017 to 2018 were retrieved from the archives of a private dental clinic. Demographic information, implant site, length, diameter, shape, and angulation, buccal and lingual plate thickness, buccolingual diameter of bone, and presence of crestal bone resorption were all assessed on CBCT scans. Data were analyzed using chi-squared, Mann-Whitney, Kruskal-Wallis, and independent t-tests. Of 604 implants, 88 had caused bone perforation in 41 females (46.6%) and 47 males (53.4%) with a mean age of 54.97 ± 13.99 years; 83% of perforations were in the maxilla; 55.7% of implants causing perforation were cylindrical and 44.3% were conical. The mean length and diameter of implants was 11.78 ± 1.91 mm, and 4.49 ± 0.76 mm, respectively; 38.9% of perforations were in the buccal and 18.2% in the lingual plate, and 42% were in the apical region. Crestal bone loss was noted in 58% of perforation cases. The mean angular deviation of implants was 19.13 ± 12.41°. Implant length and diameter had a significant association with the occurrence of perforation in the mandible (P < 0.05). Perforations had a higher frequency in the posterior maxilla, and mainly in the apical region. The buccal plate was thin in the anterior maxilla, with minimum thickness in the apical region. Lingual plate perforation had the highest frequency in the mandible.
本研究使用锥形束计算机断层扫描（CBCT）确定了牙科种植体周围颊侧和舌侧穿孔的影响因素。在这项回顾性、横断面研究中，从 2017 年至 2018 年从一家私人牙科诊所的档案中检索到了与本研究无关的目的而拍摄的牙科种植体的 CBCT 扫描。在 CBCT 扫描上评估了人口统计学信息、种植体部位、长度、直径、形状和角度、颊舌侧骨板厚度、颊舌骨直径以及是否存在牙槽骨吸收。使用卡方检验、Mann-Whitney 检验、Kruskal-Wallis 检验和独立 t 检验对数据进行分析。在 604 个种植体中，88 个种植体导致 41 名女性（46.6%）和 47 名男性（53.4%）发生骨穿孔，平均年龄为 54.97 ± 13.99 岁；穿孔 83%发生在上颌骨；55.7%的穿孔种植体为圆柱形，44.3%为圆锥形。种植体的平均长度和直径分别为 11.78 ± 1.91mm 和 4.49 ± 0.76mm；38.9%的穿孔位于颊侧，18.2%位于舌侧，42%位于根尖区。58%的穿孔病例伴有牙槽骨吸收。种植体的平均角偏差为 19.13 ± 12.41°。种植体长度和直径与下颌骨穿孔的发生有显著相关性（P<0.05）。后上颌穿孔发生率较高，主要发生在根尖区。上颌前牙颊侧骨板较薄，根尖区最薄。舌侧骨板穿孔在下颌骨中发生率最高。
