Tuncay O C, Thomson S, Abadi B, Ellinger C
J Prosthet Dent. 1984 Feb;51(2):169-80. doi: 10.1016/0022-3913(84)90254-3.
This study analyzed the longitudinal cephalometric head films of 37 edentulous patients over a 10-year period. The purpose of the investigation was to document changes within the craniofacial complex, residual ridge resorption, and position of the dentures. The changes were correlated with the following variables: age, sex, skeletal pattern, number of years edentulous, technique of denture fabrication, and nighttime wear of the dentures. Findings in this study suggest the following. The maxillae and the mandible showed sagittal spatial counterclockwise displacement. Complete dentures exhibit a counterclockwise rotation and forward movement. Soft tissue seating is more important than alveolar ridge resorption in the positional changes of complete dentures. Variation in denture techniques had no influence on the observed changes. Artificial porcelain teeth did not show a measurable amount of attrition during the 10-year observation period. Observed changes were not significantly affected by variables such as sex, years edentulous, nighttime wear, or skeletal pattern. Two exceptions were that the skeletal pattern affects prognathism and number of years edentulous affects mandibular ridge resorption.
本研究分析了37例无牙颌患者在10年期间的头颅侧位X线片。研究目的是记录颅面复合体的变化、剩余牙槽嵴吸收情况以及义齿位置。这些变化与以下变量相关：年龄、性别、骨骼类型、无牙年限、义齿制作技术以及义齿夜间佩戴情况。本研究结果表明：上颌骨和下颌骨呈现矢状面逆时针方向的空间移位；全口义齿表现为逆时针旋转和向前移动；在全口义齿位置变化方面，软组织贴合比牙槽嵴吸收更为重要；义齿制作技术的差异对观察到的变化没有影响；在10年观察期内，人造瓷牙未出现可测量的磨损量；观察到的变化不受性别、无牙年限、夜间佩戴或骨骼类型等变量的显著影响。有两个例外情况，即骨骼类型影响下颌前突，无牙年限影响下颌牙槽嵴吸收。
