Department of Medicine and Surgery, University of Milano-Bicocca, Milan, Italy.
University of Milano-Bicocca, Milan, Italy -
Minerva Dent Oral Sci. 2022 Aug;71(4):223-232. doi: 10.23736/S2724-6329.21.04469-1. Epub 2021 Apr 30.
The aim of this study was to evaluate the accuracy of implant placement using static guided surgery. Two methods of measuring accuracy were compared, the superimposition of CBCT and the non-radiological Superimposition Touch Absolute Precision (S.T.A.P.) method.
In this prospective clinical study 23 implants were placed with static surgical template using a flapless technique and postextractive procedure. Six months after surgery, a postoperative CBCT was performed to assess the position of the implants and at the same time dental impressions were taken for the final prosthesis. The plaster models made at this stage have made it possible to obtain the position of the implants inserted using the probe technology. Preoperative and postoperative data were superimposed, deviations in the three dimensions of the space were calculated. The differences between the two measurement methods were assessed.
The study showed no statistically significant differences between the two methods of measuring accuracy at the implant platform level, apex, or angles. The average real deviation detected at the implant platform level is 1.16±0.58 mm with CBCT, 1.22±0.55 mm with the S.T.A.P. method; at the apex level is 1.48±0.98 mm with CBCT, 1.47±0.72 mm with the S.T.A.P. method. The average difference between CBCT and S.T.A.P. method for real deviation is 0.06±0.75 mm at the platform level and 0.007±1.24 mm at the apex level.
The present study showed that measuring accuracy by S.T.A.P. method was comparable to that obtained by CBCT superimposition.
本研究旨在评估静态引导手术中植入物放置的准确性。比较了两种测量精度的方法，即 CBCT 叠加和非放射学叠加触摸绝对精度（S.T.A.P.）方法。
在这项前瞻性临床研究中，使用无瓣技术和拔牙后程序，通过静态手术模板放置了 23 个种植体。术后 6 个月，进行术后 CBCT 以评估种植体的位置，同时进行牙印模以制作最终修复体。此时制作的石膏模型使得可以使用探头技术获得植入物的位置。将术前和术后数据叠加，计算空间三个维度的偏差。评估了两种测量方法之间的差异。
研究表明，在种植体平台水平、根尖和角度的测量精度方面，两种方法之间没有统计学上的显著差异。在种植体平台水平上，CBCT 检测到的平均实际偏差为 1.16±0.58mm，S.T.A.P. 方法为 1.22±0.55mm；根尖水平上，CBCT 为 1.48±0.98mm，S.T.A.P. 方法为 1.47±0.72mm。CBCT 和 S.T.A.P. 方法在平台水平上的实际偏差平均差值为 0.06±0.75mm，在根尖水平上的平均差值为 0.007±1.24mm。
本研究表明，S.T.A.P. 方法测量精度与 CBCT 叠加相当。
