Chou T M, Eick J D, Moore D J, Tira D E
University of Missouri-Kansas City, School of Dentistry.
J Prosthet Dent. 1991 Sep;66(3):343-9. doi: 10.1016/0022-3913(91)90261-t.
This study applied the three-dimensional measurement technique of stereophotogrammetry to measure abutment tooth movement under occlusal loading as a function of intracoronal attachment and clasp design. Six distal-extension removable partial denture designs were studied: (1) RPI-mesial occlusal rest, proximal plate, buccal I-bar; (2) cast circumferential clasp; (3) P.D. locking semiprecision attachment; (4) Thompson dowel nonlocking semiprecision attachment; (5) McCollum precision attachment; and (6) Stern G/L precision attachment. The movement in microns was determined by computer analysis. The Thompson dowel semiprecision attachment generated the most abutment movement in a gingival direction. The clasp-retained designs generally had less total movement than the attachment designs. Clasps and attachments for the abutment teeth adjacent to the distal-extension bases generally moved more than the abutment teeth.
本研究应用立体摄影测量的三维测量技术，测量在咬合负荷下基牙移动情况，该移动情况是冠内附着体和卡环设计的函数。研究了六种远中游离可摘局部义齿设计：(1)RPI——近中支托、邻面板、颊侧I型杆；(2)铸造环形卡环；(3)PD锁定半精密附着体；(4)汤普森桩钉非锁定半精密附着体；(5)麦科勒姆精密附着体；以及(6)斯特恩G/L精密附着体。移动的微米数通过计算机分析确定。汤普森桩钉半精密附着体在龈向产生的基牙移动最多。卡环固位设计的总移动通常比附着体设计少。与远中游离基托相邻的基牙的卡环和附着体通常比基牙移动更多。
