ObjectivesThis study aims to examine differences in trueness and precision between surgical guides with (S) and without sleeves (SL). A secondary aim was to assess the impact of the sleeve‐to‐bone distance.Materials and MethodsMandible replicas (n = 120) were printed from an STL file obtained from a clinical CBCT. The mandibles were divided into sleeved (S, n = 60) and sleeveless (SL, n = 60) groups, each further divided into three categories (n = 20 each) with different heights from the guide to the implant platform: 2 mm (H2), 4 mm (H4), or 6 mm (H6). Digital planning and surgical guide design were done for a 4.1 × 10 mm implant for site #30. Post‐op positions were captured using a scan body and lab scanner. Angular deviation was the primary outcome, with 3D and 2D deviations as secondary parameters. Statistical analysis included two‐sample t‐tests, and one‐way and two‐way ANOVA.ResultsGroup S (2.41 ± 1.41°) had significantly greater angular deviation than Group SL (1.65 ± 0.93°; p = 0.0001). Angular deviation increased with sleeve‐to‐bone distance. H2 deviations were 1.48 ± 0.80° (S) vs. 1.02 ± 0.45° (SL; p < 0.05), H4: 2.36 ± 1.04° (S) vs. 1.48 ± 0.79° (SL; p < 0.05), H6: 3.37 ± 0.67° (S) vs. 2.46 ± 0.89° (SL; p < 0.05). 3D deviation at the implant platform was 0.36 ± 0.17 mm (S) vs. 0.30 ± 0.15 mm (SL; p < 0.05) and at the apex 0.74 ± 0.34 mm (S) vs. 0.53 ± 0.31 mm (SL; p < 0.01). Group SL at H2 had the smallest inter‐implant distance (0.53 ± 0.37°), while Group S at H4 had the largest (1.20 ± 0.84°; p < 0.05).ConclusionsSleeveless guides are more accurate than sleeved guides, and angular deviation is influenced by the distance from the guide to the implant platform.

中文翻译：

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静态计算机辅助种植手术中是否需要套管？比较体外分析


目的本研究旨在检查有 （S） 和无袖套 （SL） 的手术导板之间的正确度和精度差异。次要目的是评估袖子到骨骼距离的影响。材料和方法下颌骨复制品 （n = 120） 是从临床 CBCT 获得的 STL 文件打印的。下颌骨分为有袖 （S， n = 60） 和无袖 （SL， n = 60） 组，每组进一步分为三类 （每组 n = 20），从导向器到种植体平台的高度不同：2 mm （H2） 、 4 mm （H4） 或 6 mm （H6）。对 #30 部位的 4.1 × 10 mm 植入物进行了数字规划和手术导板设计。使用扫描体和技工所扫描仪捕获术后位置。角度偏差是主要结局，3D 和 2D 偏差是次要参数。统计分析包括双样本 t 检验以及单因素和双因素方差分析。结果S 组 （2.41 ± 1.41°） 的角度偏差显著大于 SL 组 （1.65 ± 0.93°;p = 0.0001）。角度偏差随着袖子到骨骼的距离而增加。H2偏差分别为1.48 ± 0.80° （S） vs. 1.02 ± 0.45° （SL;p < 0.05），H4： 2.36 ± 1.04° （S） vs. 1.48 ± 0.79° （SL;p < 0.05），H6： 3.37 ± 0.67° （S） vs. 2.46 ± 0.89° （SL;p < 0.05）。种植体平台的 3D 偏差为 0.36 ± 0.17 毫米 （S） 与 0.30 ± 0.15 毫米 （SL;p < 0.05），顶端为 0.74 ± 0.34 毫米 （S） 与 0.53 ± 0.31 毫米 （SL;p < 0.01）。H2 的 SL 组种植体间距最小 （0.53 ± 0.37°），而 H4 的 S 组最大 （1.20 ± 0.84°;p < 0.05）。结论无套筒导板比有套筒导板更准确，角度偏差受导板到种植体平台距离的影响。