骨环技术纠正种植三维骨量不足的临床回顾研究

Clinical retrospective study of bone ring technique for 3-dimensional bone augmentation in implant restoration

目的评价骨环技术同期种植修复在单牙三维骨缺损中的有效性及操作要点。方法回顾2010年8月至2023年2月在北京大学深圳医院口腔科和深圳市友睦口腔门诊部就诊的单牙缺失垂直向骨缺损的病例,采用自体骨环移植同期种植的方法,术后半年二期修复。评价术后并发症、骨增量及种植体失败情况,以及骨增量及种植修复后的骨吸收量。结果167例骨环技术骨增量病例中修复前种植体失败2例,骨环失败4例,修复完成后无种植体失败取出。36例有完整CBCT资料的患者平均垂直骨增量(4.52±0.81)mm,术后6个月唇侧垂直骨吸收(0.25±0.11)mm,种植修复后1年唇侧垂直骨吸收(0.52±0.23)mm。结论基底骨量尚佳的垂直向骨缺损采用自体骨环技术骨增量同期种植可有效恢复垂直向骨量,且有较高的种植体留存率及较低的并发症发生率。

Objective To evaluate the efficacy and key points of the bone ring technique for three-dimensional bone augmentation with simultaneous implant placement in cases of single-tooth loss with bone defects.Methods A retrospective review of cases from August 2010 to February 2023 at the Department of Dentistry,Peking University Shenzhen Hospital,and U-dental Clinic in Shenzhen,where patients with single-tooth vertical bone defects were treated using the autogenous bone ring technique with simultaneous implant placement.Second-stage surgeries were performed 6 months postoperatively for final restorations.Complications,bone augmentation outcomes,implant failures,and postoperative bone resorption were assessed through clinical and radiographic evaluations.Results 167 teeth were treated with the bone ring technique.2 implants failed before restoration,and 4 bone rings failed during the healing period.No further implant failures were observed after restoration.Of the 36 patients with complete CBCT data,the average vertical bone gain was(4.52±0.81)mm.Average vertical bone resorption was(0.25±0.11)mm at 6 months post-surgery and(0.52±0.23)mm at 1 year after final restoration.Conclusion The bone ring technique,when applied to cases with sufficient basal bone and vertical bone defects,is an effective method for achieving vertical bone augmentation with simultaneous implant placement.It demonstrates a high implant success rate and low complication rate.