Latta G H, Bowles W F, Conkin J E
Department of Prosthodontics, University of Tennessee, College of Dentistry, Memphis.
J Prosthet Dent. 1990 Jun;63(6):654-61. doi: 10.1016/0022-3913(90)90322-4.
Ten maxillary dentures were constructed on standard-sized casts in each of four acrylic resins. Uniform placement of the artificial teeth and thickness of the base were maintained by use of a silicone rubber mold. Metal shot was luted in preselected positions to the dentures and the land of the cast. Frontal, lateral, and occlusal radiographs were made of the dentures at time intervals of (1) before processing, (2) after processing, (3) immediately after removal from the cast, and (4) 30 days later. Study of the radiographs revealed significant variations in position of the metal shot from the before-processing baseline within each group of dentures and significant differences between groups of dentures.
在四种丙烯酸树脂中，每种都在标准尺寸的模型上制作了十副上颌义齿。通过使用硅橡胶模具来保持人造牙的均匀排列和基托的厚度。将金属小球用粘结剂固定在义齿和模型的特定位置上。在以下时间间隔对义齿进行正位、侧位和咬合位X线片拍摄：（1）加工前，（2）加工后，（3）从模型上取下后立即拍摄，以及（4）30天后。对X线片的研究显示，每组义齿中金属小球相对于加工前基线的位置存在显著差异，并且不同组义齿之间也存在显著差异。
