首页> 外文期刊>The Journal of Prosthetic Dentistry >Positional accuracy of a prosthetic treatment plan incorporated into a cone beam computed tomography scan using surface scan registration
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Positional accuracy of a prosthetic treatment plan incorporated into a cone beam computed tomography scan using surface scan registration

机译:使用表面扫描配准,掺入锥形光束的假体治疗计划的位置准确性

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摘要

Statement of problemThe registration of surface scans onto cone beam computed tomography (CBCT) scans has been proposed as a method of visualizing different anatomic structures and the prosthetic treatment plan simultaneously. This method also overcomes some of the problems associated with conventional radiographic templates. However, it has not been thoroughly investigated or validated for use in implant dentistry. PurposeThe purpose of this in?vitro study was to evaluate the accuracy of a prosthetic treatment plan surface scan incorporated into a CBCT scan and to compare it to conventional radiographic templates for single tooth replacement. Material and methodsDirect surface scans of a completely dentate master model with removable radiopaque teeth were made using an intraoral scanner, and indirect surface scans of a stone duplicate of the master model were made using a laboratory scanner. To simulate a clinical scenario, the mandibular left first molar was removed. A CBCT scan of the clinical scenario was made. The surface scans were registered onto the CBCT scans. Radiographic templates for the clinical scenario were fabricated, and the master model was subsequently scanned using the same CBCT scanner with each radiographic template seated. Metrology software was used to assess the accuracy of each method by measuring the 3-dimensional deviation on standard tessellation language (STL) files generated from the CBCT scans against an STL file of the completely dentate master model generated from a CBCT scan. One-way ANOVA and the Tukey HSD test were used for statistical analysis (α=.05). ResultsThe incorporation technique had a significant effect on deviation from the master model (P=.004). The overall mean 3-dimensional deviation was 0.04 mm for direct surface scan registrations, 0.03 mm for indirect surface scan registrations, and 0.33 mm for radiographic templates. Radiographic templates were significantly less accurate compared with both surface scan registration methods (P<.001), whereas no statistically significant difference in accuracy was found between the registration of a laboratory scan and that of an intraoral scan (P=.94). ConclusionsIntraoral and laboratory surface scan registration on CBCT scans were more accurate than radiographic templates for prosthetic treatment plan incorporation. The accuracy of the registration of an intraoral scan and a laboratory scan was comparable.
机译:问题声明表面扫描对锥形光束计算机断层扫描(CBCT)扫描的登记被提出作为可同时可视化不同解剖结构和假体治疗计划的方法。该方法还克服了与传统射线照相模板相关的一些问题。但是,它尚未彻底调查或验证用于植入物牙科。目的的目的是,在体外研究中,评估掺入CBCT扫描中的假体治疗计划表面扫描的准确性,并将其与单齿更换的常规放射线模板进行比较。使用内部扫描仪制造具有可拆卸的射线齿的完全齿状母模型的材料和方法,使用内部扫描仪进行,使用实验室扫描仪进行主模型的石头副本的间接表面扫描。为了模拟临床情景,除去颌骨左的第一磨牙。制作了临床情景的CBCT扫描。表面扫描登记到CBCT扫描上。制造了临床情景的射线照相模板,随后使用与每个射线照相模板一起使用的CBCT扫描仪扫描主模型。 Metrology软件用于通过测量从CBCT扫描从CBCT扫描生成的完全牙齿扫描的STL文件中测量从CBCT扫描生成的标准曲面图语言(STL)文件上的三维偏差来评估每种方法的准确性。单向ANOVA和Tukey HSD测试用于统计分析(α= .05)。结果掺入技术对与主模型的偏差有显着影响(p = .004)。对于直接表面扫描登记,对于间接表面扫描注册的直接表面扫描登记,为0.03mm,对于射线照相模板,总体平均三维偏差为0.04mm。与两种表面扫描登记方法相比(P <0.001)相比,射线照相模板的准确性明显不太准确,而在实验室扫描的登记和口内扫描的注册之间没有发现精度的统计学意义差异(P = .94)。结论在CBCT扫描上对CBCT扫描的扫描登记比假体治疗计划融合的射线照相模板更准确。口腔扫描和实验室扫描的登记的准确性相当。

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  • 作者单位

    Advanced Education in Prosthodontics Program Division of Restorative Sciences and Prosthodontics;

    Research Program Director and Associate Professor Division of Orthodontics The Ohio State;

    Division of Restorative Sciences and Prosthodontics The Ohio State University College of Dentistry;

    Program Director and Assistant Professor Advanced Education in Prosthodontics Program Division of;

    Research Internship in Restorative Prosthetic and Implant Dentistry Program Director and;

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  • 正文语种 eng
  • 中图分类 口腔科学;
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