Does guided level (fully or partially) influence implant placement accuracy at post-extraction sockets and healed sites? An in vitro study
Does guided level (fully or partially) influence implant placement accuracy at post-extraction sockets and healed sites? An in vitro study
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DOI：
10.1007/s00784-022-04512-y
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发表时间：
2022-05-02
影响因子：
3.4
通讯作者：
Wang, Hom-Lay
中科院分区：
文献类型：
--
作者：
Chen, Zhaozhao;Li, Junying;Wang, Hom-Lay
目的探讨引导水平对拔牙后牙槽窝及愈合部位静态计算机辅助种植手术(SCAIS)准确性的影响。材料与方法共使用30个重复牙体模型，300个潜在种植部位。所有模型均随机分为三组：完全引导组(FG，n=100)、部分引导组(PG，n=100)和自由手手术组(FH，n=100)。种植体放置后，通过软件Blender中的Python脚本自动测量虚拟计划的种植体位置与实际种植体位置之间的平均全局、水平、深度和角度偏差。结果FG和PG手术在拔牙后牙槽窝和愈合部位的准确性均明显高于FH手术。在两个sCAIS组中，植入眼窝的植入物的偏差比延迟放置植入物的偏差高近50%。对于即刻种植，SCCAIS的准确性受到引导水平的显著影响。FG组的偏差低于PG组，在冠状整体偏差和水平偏差方面有显著差异(p<；0.05)。对于愈合的部位，两个指导组的结果相似(p>；0.05)。结论在从规划到模型模拟的位置转换中，sCAIS提供了比自由手方法更高的准确性。充分的引导可以显著提高准确性，特别是在拔牙后部位。
Objectives The aim of this study is to evaluate the effect of guide level on the accuracy of static computer-aided implant surgery (sCAIS) at post-extraction sockets and healed sites. Materials and methods A total of 30 duplicate dental models, with 300 potential implant sites, were used. All the models were equally randomized into three groups: fully guided (FG, n = 100), partially guided (PG, n = 100), and free handed (FH, n = 100) surgeries. After implant placement, the mean global, horizontal, depth, and angular deviations between the virtually planned and actual implant positions were measured automatically by a Python script within software Blender. Results Both FG and PG surgeries showed significantly higher accuracy than FH surgery at post-extraction sockets and healed sites. In both sCAIS groups, there were nearly 50% more deviations from implants placed at sockets than those from delayed placement. For the immediate implant placement, the accuracy of sCAIS was significantly affected by the level of guidance. The FG group exhibited lower deviations than the PG group, with a significant difference in coronal global and horizontal deviations (p < .05). For the healed sites, two guided groups exhibited similar outcomes (p > .05). Conclusions sCAISs provide more accuracy than the free-handed approach in position transferring from planning to a model simulation. Full guidance can significantly increase the accuracy, especially at post-extraction sites.