...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Clinical oral implants research >Impact of number of registration points on the positional accuracy of a prosthetic treatment plan incorporated into a cone beam computed tomography scan by surface scan registration: An in vitro study
【24h】

Impact of number of registration points on the positional accuracy of a prosthetic treatment plan incorporated into a cone beam computed tomography scan by surface scan registration: An in vitro study

机译：注册点数对通过表面扫描注册结合到锥形光束的假体治疗计划的位置准确性的影响：体外研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Abstract Objectives To evaluate the accuracy of a prosthetic treatment plan incorporation into a cone beam computed tomography (CBCT) scan using point‐based registration with three registration points selected and to evaluate the impact of number of registration points on prosthetic plan accuracy. Material and Methods A CBCT scan of a completely dentate master model with removable teeth was exposed after removing the mandibular left first premolar, second premolar, and first molar. A digital scan of the master model with all teeth present was made by scanning a stone replica using a laboratory scanner. The digital model was registered onto the three‐dimensional (3D) volume rendering of the CBCT scan using implant planning software. The point‐based registration was repeated using three, four, five, six, seven, eight, nine, and 10 reference points. Metrology software was used to measure the 3D deviation of the registered models for each reference point group on standard tessellation language (STL) files obtained from the CBCT scans. An STL file of the master model with all teeth present obtained from another CBCT scan was used as reference. Results Using three registration points, the registered prosthetic plan had a mean absolute deviation of 17.63?μm from the reference. Increasing the number of registration points failed to demonstrate statistically significant effects on the deviation ( p? ?0.05). Conclusions For this clinical scenario, three registration points provided adequate accuracy for prosthetic plan incorporation into CBCT scans. Increasing the number of registration points had no significant impact on the prosthetic plan accuracy in this study.
机译：摘要目的，评估假肢治疗计划的准确性掺入锥形光束计算机断层扫描（CBCT）扫描，使用基于点的配准，选择了三个注射点，并评估了注册点数对假体计划准确性的影响。材料和方法在除去下颌左前磨牙，第二磨牙和第一磨牙后，暴露出具有可拆卸齿的完全牙齿母模型的CBCT扫描。使用实验室扫描仪扫描石头复制品来制造所有牙齿的主模型的数字扫描。使用植入计划软件将数字模型登记到CBCT扫描的三维（3D）卷渲染。使用三个，四个，五个，六个，七个，八个，九个和10个参考点重复基于点的注册。 Metrology软件用于测量从CBCT扫描获得的标准曲面图语言（STL）文件上的每个参考点组的注册模型的3D偏差。使用从另一个CBCT扫描中获得的所有牙齿的主模型的STL文件用作参考。结果采用三个注射点，注册的假体计划的平均绝对偏差为17.63Ωμm。增加注册点数未能对偏差表现出统计上显着的影响（p？＆？0.05）。结论这一临床情景，三个注册点为假肢计划纳入CBCT扫描提供了足够的准确性。增加注册点数量对本研究中的假肢准确性没有重大影响。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号