Ma Feifei, Liu Mingyue, Liu Xiaoqiang, Wei Tai, Liu Lilan, Sun Feng
First Clinical Division, Peking University School and Hospital of Stomatology, Beijing 100034, China.
Department of Prosthodontics, Peking University School and Hospital of Stomatology, Beijing 100081, China.
J Pers Med. 2023 Feb 18;13(2):362. doi: 10.3390/jpm13020362.
To propose a novel, radiation-free method for postoperative three-dimensional (3D) position analysis of dental implants based on the dynamic navigation system (DNS) and evaluate its accuracy in vitro.
A total of 60 implants were digitally planned and then placed in the standardized plastic models with a single-tooth gap and a free-end gap under the guidance of the DNS. Postoperative 3D positions of the inserted implants were evaluated using specially designed navigation-based software, and its datasets were superimposed onto those of cone beam computed tomography (CBCT) for accuracy analyses. Deviations at the coronal, apical, and angular levels were measured and statistically analyzed.
The mean 3D deviation was 0.88 ± 0.37 mm at the entry point and 1.02 ± 0.35 mm at the apex point. The mean angular deviation was 1.83 ± 0.79 degrees. No significant differences were noted in the deviations between implants placed in the single-tooth gap and the free-end situation ( > 0.05) or between different tooth positions at distal extensions ( > 0.05).
This non-radiographic method provides facile, efficient, and reliable postoperative implant position evaluation and may be a potential substitute for CBCT, particularly for implants placed under the guidance of dynamic navigation.
提出一种基于动态导航系统（DNS）的新型无辐射方法，用于牙种植体术后三维（3D）位置分析，并在体外评估其准确性。
共对60颗种植体进行数字化规划，然后在DNS引导下将其植入具有单牙间隙和游离端间隙的标准化塑料模型中。使用专门设计的基于导航的软件评估植入种植体的术后三维位置，并将其数据集与锥形束计算机断层扫描（CBCT）的数据集进行叠加以进行准确性分析。测量并统计分析冠状、根尖和角度水平的偏差。
入口点的平均三维偏差为0.88±0.37mm，根尖点为1.02±0.35mm。平均角度偏差为1.83±0.79度。单牙间隙和游离端情况下植入的种植体之间的偏差（>0.05）或远端延伸处不同牙位之间的偏差（>0.05）均无显著差异。
这种非放射学方法为术后种植体位置评估提供了简便、高效且可靠的方法，可能是CBCT的潜在替代方法，特别是对于在动态导航引导下植入的种植体。
