Department of Oral and Maxillofacial Surgery, School of Dentistry, Chosun University, Gwangju, Republic of Korea.
Implant Dent. 2013 Apr;22(2):170-4. doi: 10.1097/ID.0b013e31827f3576.
The purpose of this study was to evaluate the augmentation volume of a sinus graft according to the time and graft materials based on cone-beam computed tomography (CBCT) scans and to assess efficacy of a bioabsorbable membrane.
Fourteen patients were investigated, and volumetric analysis was performed using OnDemand 3DTM software (Cybermed, Seoul, Korea). CBCT scans were performed on patients before surgery, immediately after surgery, 6 months after surgery, and 1 year after surgery. Following this analysis, the volumetric data were compared with the actual grafted volumes. Bioabsorbable membranes were used in all patients to promote the protection of sinus membranes and to guide bone regeneration.
Overall, the average percent volume of graft material that remained 6 months after implantation was 82.0%, and the average percent volume of graft material that remained 1 year after surgery was 60.4%. These reductions in the volume of graft material from immediately after surgery until 6 months or 1 year after surgery were shown to be statistically significant (P = 0.002 and P < 0.001, respectively).
The slight differences observed among the data indicate that volumetric analysis performed using CBCT can provide highly accurate data. A significant difference was observed in volumetric change over time, but no significant differences were observed between materials. No significant relationship was observed between the resorption of grafted bone and the success rate.
本研究旨在通过锥形束 CT（CBCT）扫描评估根据时间和移植物材料的鼻窦骨增量体积，并评估生物可吸收膜的疗效。
对 14 名患者进行了研究，并使用 OnDemand 3DTM 软件（Cybermed，首尔，韩国）进行了体积分析。在手术前、手术后即刻、手术后 6 个月和手术后 1 年对患者进行 CBCT 扫描。在进行此分析后，将体积数据与实际移植的体积进行了比较。所有患者均使用生物可吸收膜以促进保护鼻窦膜和引导骨再生。
总体而言，植入后 6 个月时移植物材料的平均体积百分比为 82.0%，植入后 1 年时移植物材料的平均体积百分比为 60.4%。从手术后即刻到 6 个月或 1 年，移植物材料的体积减少具有统计学意义（P = 0.002 和 P < 0.001）。
从 CBCT 进行的体积分析可以提供高度准确的数据，数据之间的细微差异表明这一点。随着时间的推移，体积变化观察到显著差异，但材料之间无显著差异。未观察到移植物骨吸收与成功率之间存在显著关系。
