DDS, MS. Master of Oral Surgery and Implantology, Faculty of Medicine and Health Sciences, University of Barcelona, Barcelona Spain.
DDS, MS, PhD. Associate Professor of Oral Surgery, Faculty of Medicine and Health Sciences, University of Barcelona (Spain). Researcher at the IDIBELL Institute, Barcelona Spain.
J Dent. 2024 Oct;149:105290. doi: 10.1016/j.jdent.2024.105290. Epub 2024 Aug 4.
To compare miniscrew versus bone tracing registration methods on dental implant placement accuracy and time efficiency in edentulous jaws using a dynamic computer-assisted implant surgery (d-CAIS) system.
Twelve fully edentulous maxillary models were allocated into two groups: miniscrew tracing (MST) group, where registration was performed by tracing four miniscrews; and bone tracing (BT) group, where registration was conducted by tracing maxillary bone fiducial landmarks. Six implants were placed on each model using the X-Guide® d-CAIS system. Pre- and postoperative cone-beam computed tomography (CBCT) scans were superimposed to evaluate implant placement accuracy. The time required for registration and the overall surgery time were also recorded.
Thirty-six implants were placed in each group. The MST group showed significantly lower mean angulation deviations (mean difference (MD): -3.33°; 95 % confidence interval (CI): -6.56 to -0.09); p = 0.044), 3D platform deviations (MD: -1.01 mm; 95 % CI: -1.74 to -0.29; p = 0.006), 2D platform deviations (MD: -0.97 mm; 95 % CI: -1.71 to -0.23; p = 0.010), and 3D apex deviations (MD: -1.18 mm; 95 % CI: -1.92 to -0.44; p = 0.002) versus the BT group. The overall surgery time was similar for both groups (MD: 6.10 min.; 95 % CI: -0.31 to 12.51; p = 0.06), though bone tracing required significantly more time compared with miniscrew registration (MD: 4.79 min.; 95 % CI: 2.96 to 6.62; p < 0.05).
Registration with MST increases the accuracy of implant placement with a d-CAIS system in edentulous jaws compared with the BT method, and slightly reduces the overall surgery time.
Miniscrew tracing registration improves implant placement accuracy in comparison with bone tracing registration.
比较在无牙颌中使用动态计算机辅助种植手术（d-CAIS）系统时，微型螺钉追踪（MST）与骨追踪注册方法在牙种植体放置准确性和时间效率方面的差异。
将 12 个完全无牙的上颌模型分为两组：微型螺钉追踪（MST）组，通过追踪四颗微型螺钉进行注册；骨追踪（BT）组，通过追踪上颌骨基准标志进行注册。每个模型上放置六颗种植体，使用 X-Guide®d-CAIS 系统。对术前和术后的锥形束计算机断层扫描（CBCT）进行叠加，以评估种植体放置的准确性。还记录了注册和总手术时间所需的时间。
每组放置 36 颗种植体。MST 组的平均角度偏差（平均差值（MD）：-3.33°；95%置信区间（CI）：-6.56 至 -0.09）；p = 0.044）、3D 平台偏差（MD：-1.01mm；95%CI：-1.74 至 -0.29；p = 0.006）、2D 平台偏差（MD：-0.97mm；95%CI：-1.71 至 -0.23；p = 0.010）和 3D 根尖偏差（MD：-1.18mm；95%CI：-1.92 至 -0.44；p = 0.002）明显低于 BT 组。两组的总手术时间相似（MD：6.10 分钟；95%CI：-0.31 至 12.51；p = 0.06），尽管骨追踪所需的时间明显长于微型螺钉注册（MD：4.79 分钟；95%CI：2.96 至 6.62；p < 0.05）。
与 BT 方法相比，在无牙颌中使用 MST 进行注册可提高 d-CAIS 系统中种植体放置的准确性，并且略微减少了总手术时间。
与骨追踪注册相比，微型螺钉追踪注册可提高种植体放置的准确性。
