BACKGROUND/OBJECTIVE:In this retrospective study, we aimed to investigate a new 3D evaluation method for evaluating bone regeneration after cystectomy of odontogenic cysts. METHODS:The study included 26 patients who underwent cystectomies between 2012 and 2017 and had received either fillings or non-fillings with autologous iliac crest. Bony regeneration was analyzed using 3D imaging software and comparing identical regions of interest (ROIs) that were determined by exact overlays of the postoperative cone beam computer tomography (CBCT) or computer tomography (CT) images. Outcome measures, including volume changes according to the defect size and configuration, patient age, the entity and distribution of the cysts, were collected. RESULTS:Twenty-six patients (5 women and 21 men) had 30 defects, including nine keratocysts, seven radicular cysts and 14 dentigerous cysts. A total of 73% of the defects were in the mandible. The mean 3D follow-up time was 12 months. According to the 3D evaluation of bony regeneration, the defect size and configuration showed no significant differences between the groups (filled or non-filled with 15 defects per group). CONCLUSIONS:By establishing a standardized 3D method for evaluating bone regeneration, healing can be better monitored and evaluated.

中文翻译：

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牙源性囊肿膀胱切除术后骨再生的回顾性 3D 分析。

背景/目的：在这项回顾性研究中，我们旨在研究一种新的 3D 评估方法，用于评估牙源性囊肿膀胱切除术后骨再生。方法：该研究包括 26 名在 2012 年至 2017 年期间接受膀胱切除术并接受了自体髂嵴填充物或非填充物的患者。使用 3D 成像软件分析骨再生，并比较由术后锥形束计算机断层扫描 (CBCT) 或计算机断层扫描 (CT) 图像的精确叠加确定的相同感兴趣区域 (ROI)。收集了结果测量值，包括根据缺损大小和配置、患者年龄、囊肿的实体和分布的体积变化。结果：26 名患者（5 名女性和 21 名男性）有 30 个缺陷，包括 9 个角化囊肿，7 个根性囊肿和 14 个含牙囊肿。总共 73% 的缺陷在下颌骨中。平均 3D 随访时间为 12 个月。根据骨再生的 3D 评估，各组（填充或非填充，每组 15 个缺损）之间的缺损大小和配置没有显着差异。结论：通过建立标准化的 3D 评估骨再生方法，可以更好地监测和评估愈合。