A Retrospective Study on the Transferring Accuracy of a Fully Guided Digital Template in the Anterior Zone.
A Retrospective Study on the Transferring Accuracy of a Fully Guided Digital Template in the Anterior Zone.
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DOI：
10.3390/ma14164631
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发表时间：
2021-08-17
期刊：
影响因子：
--
通讯作者：
Mo A
中科院分区：
文献类型：
--
作者：
Huang L;Zhang X;Mo A
使用完全引导的数字模板进行种植体放置的准确性可能受到许多因素的影响，例如牙弓差异、牙槽骨密度、种植体放置的时机和开放皮瓣。本文的目的是评估可能影响前区完全引导模板辅助种植体放置准确性的因素。四川大学华西口腔医院对40例前牙缺失患者，在CBCT评估后，使用牙载全引导模板共植入52颗种植体。将术前和术后DICOM数据重叠后，在牙科种植体计划软件（Nobel Clinician®）中进行测量，以计算虚拟放置计划和实际种植体放置之间的线性和角度偏差。根据可能影响准确性的三个因素对种植体进行分类：牙弓类型（上颌骨/下颌骨）、种植体放置时间（立即/延迟）、手术技术（开放皮瓣/不翻瓣）。数据用独立样本t检验进行分析（p < 0.05）。结果表明：全导向模板在前牙区种植体位置的根尖、冠状、深度和角度平均偏差分别为1.13 ± 0.39mm、0.86 ± 0.33mm、0.41 ± 0.66mm、3.32 ± 1.65°。上颌和下颌骨的顶点水平、冠状水平和成角的准确性相似，立即和延迟植入、开放皮瓣和不翻瓣技术之间的所有四个偏差的幅度都很小。差异无统计学意义（p > 0.05）。上、下颌骨深度偏差差异有显著性（p < 0.05）。总之，种植体部位、牙槽骨密度、种植体放置时机和手术技术仅在完全引导模板的辅助下损害种植体放置准确性。
The accuracy of implant placement with a fully guided digital template can be influenced by many factors, such as arch difference, alveolar bone density, timing of implant placement and open flap. The purpose of this article was to evaluate the factors presumptively affecting the accuracy of implant placement assisted by the fully guided template in the anterior zone. In 40 patients with missing anterior teeth, a total of 52 implants were placed with tooth-borne, fully guided templates after CBCT evaluation, in West China Hospital of Stomatology, Sichuan University. After overlapping the pre-and post-operative DICOM data, measurements were taken in the dental implant planning software (Nobel Clinician®) to calculate linear and angular deviations between virtual placement plan and actual implant placement. Grouping was categorized according to three factors that possibly have an influence on accuracy: arch type (maxilla/mandible), timing of implant placement (immediate/delayed), surgical technique (open flap/flapless). The data was analyzed with independent sample t-test (p < 0.05). The results showed that the apical, coronal, depth and angular mean deviations of implant positions in anterior zone were 1.13 ± 0.39 mm, 0.86 ± 0.33 mm, 0.41 ± 0.66 mm, 3.32 ± 1.65° with the fully guided templates. The accuracy at apex level, coronal level and the angulation were similar between the maxilla and mandible, and the magnitude of all four deviations between immediate and delayed implantation, open flap and flapless technique were small. No statistically significant difference was observed (p > 0.05). Whereas there was significant difference in depth deviation between maxilla and mandible (p < 0.05). Conclusively, the implant site, alveolar bone density, timing of implant placement and surgical techniques merely compromise the implant placement accuracy under the assistance of a fully guided template.
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作者：
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