Department of Surgery and Medicine, University of Milano-Bicocca, Monza, Italy.
Department of Biomedical, Surgical and Dental Sciences, Università degli Studi di Milano, Milan, Italy.
Clin Implant Dent Relat Res. 2018 Oct;20(5):713-721. doi: 10.1111/cid.12649. Epub 2018 Aug 24.
Lateral approach to maxillary sinus floor elevation (LSFE) with autologous bone grafts and simultaneous implant insertion is a widespread technique for prosthetic rehabilitation of the atrophic maxilla.
To analyze implant survival and autologous bone graft resorption after LSFE, in patients with at least 5 years follow-up.
Thirty-three patients (mean age 56 years, range 46-68 years) who had undergone LSFE with intraoral autologous bone graft from mandibular ramus and simultaneous implant insertion were included. A minimum of 5 years of follow-up was required. The total peri-implant bone height was measured at mesial and distal aspects of the implants immediately after surgery (T0) and after a period ranging from 5 to 11.5 years after surgery (mean 7.65 ± 1.80 years) (T1) on digital panoramic and periapical radiographs. Wilcoxon matched-pairs signed rank test was used to compare bone graft height at T0 and T1. The influence of patient-, surgery-, and implant-related factors on the outcomes was investigated.
Of the 58 implants placed, no one was lost. All prostheses were in function, and no biological or mechanical complications occurred. The residual ridge height at the involved sites averaged 6.48 ± 1.72 mm. The mean bone height at grafted regions was 12.05 ± 2.47 mm at T0 and 12.13 ± 2.39 mm at T1 (not statistically significant). Marginal bone level change at T1 averaged -1.22 ± 1.60 mm. None of the evaluated factors significantly affected the results.
Autologous bone grafts from intraoral donor sites display excellent volume stability over time that may contribute to optimal outcomes of the procedure.
经上颌窦外侧提升（LSFE）并用自体骨移植和同期植入种植体是一种广泛应用于修复萎缩上颌骨的技术。
分析 LSFE 后种植体存活率和自体骨移植吸收情况，这些患者随访时间至少 5 年。
33 例患者（平均年龄 56 岁，范围 46-68 岁）接受经口取自下颌支的自体骨移植的 LSFE 并用同期植入种植体。需要至少 5 年的随访。在手术即刻（T0）和手术后 5 至 11.5 年（平均 7.65±1.80 年）（T1），在数字全景和根尖片上测量每个种植体近中和远中部位的总种植体周围骨高度。使用 Wilcoxon 配对符号秩检验比较 T0 和 T1 时骨移植高度。研究了患者、手术和种植体相关因素对结果的影响。
58 个植入物中无一丢失。所有义齿均在功能中，没有发生生物学或机械并发症。受累部位的剩余牙槽嵴高度平均为 6.48±1.72mm。T0 时移植区域的平均骨高度为 12.05±2.47mm，T1 时为 12.13±2.39mm（无统计学意义）。T1 时边缘骨水平变化平均为-1.22±1.60mm。评估的因素均未显著影响结果。
经口供体部位的自体骨移植在时间上具有出色的体积稳定性，这可能有助于该手术的最佳结果。
