Bishop M, Lamb D J
Department of Restorative Dentistry, Sheffield School of Clinical Dentistry, University of Sheffield, UK.
Eur J Prosthodont Restor Dent. 1997 Mar;5(1):11-5.
The purpose of this study on 19 edentulous patients was to compare the retruded jaw relations recorded on wax rims at the registration stage with those recorded on finished dentures at insertion. An intra-oral centre-point trace served as the reference point for both sets of measurements. Results showed the two techniques to give mean retruded positions 0.25 mm apart in the occlusal-sagittal plane, but the distributions of the two sets of results differed; those recorded on finished dentures had greater precision, with smaller range and standard deviation. The work confirms the usefulness of a post insertion check record carried out on complete dentures to minimise any occlusal errors introduced at the registration stage.
本研究针对19名无牙颌患者，旨在比较在义齿制作登记阶段用蜡堤记录的后退位颌关系与义齿戴入时在完成的义齿上记录的后退位颌关系。口腔内中心点描记作为两组测量的参考点。结果显示，两种技术在咬合矢状平面上得出的平均后退位相差0.25毫米，但两组结果的分布有所不同；在完成的义齿上记录的结果精度更高，范围和标准差更小。这项研究证实了对全口义齿进行戴入后检查记录的作用，可将登记阶段引入的任何咬合误差降至最低。
