扫描叉咬合印记转移模型至虚拟架的技术探索

A novel technique to directly transfer casts scan to the virtual articulator by scanning maxillary bite registration of the bite fork

目的:介绍一种通过扫描叉上的咬合印记直接将工作模型空间关系转移至虚拟架的新技术,从而提高模型相对于铰链轴空间位置关系的转移精度,简化传统的面弓转移及上架的流程。方法:将万向关节锁定的带有上颌咬合印记硅橡胶记录的叉固定于转移台,使用模型扫描仪扫描叉上的咬合印记,利用软件匹配咬合印记与上颌模型数据以获得上颌模型在虚拟架中的位置关系,再使用含有咬合关系的上下颌模型数据将下颌模型匹配到虚拟架中,从而将模型位置关系转移到虚拟架。结果:成功实现上下颌工作模型的虚拟转移,同时减少了将模型转移到实体架的传统操作步骤。结论:利用叉上的咬合印记将模型空间关系转移至虚拟架是一种可行的方式,此技术可以有效减少转移架时人为操作的误差,有利于提高虚拟架转移的效率与精度。

Objective:To introduce a novel technique to directly transfer casts scan to the virtual articulator by scanning the maxillary bite registration of the bite fork,so as to improve the accuracy of casts transferring,and simplify the conventional facebow transferring and articulator mounting process.Methods:Transfer fork with the maxillary bite registration is first obtained and fixed to the transfer platform of a lab scanner,then the bite fork is scanned using the scanner,thus transferring the spatial position of the maxillary bite registration to the matched virtual articulator,and then the maxillary cast scan is transferred through the bite registration by matching the same landmarks.The mandibular cast scan is subsequently transferred by matching the maxillomandibular bite registration scan.Results:The casts were successfully transferred to the virtual articulator using the proposed technique,eliminating the conventional transferring and mounting process.Conclusion:Casts scan could be directly transferred to the virtual articulator through scanned bite fork with the maxillary bite registration,which improves the efficiency and accuracy of the virtual articulator transferring procedures.