Jamani K D, Moligoda Abuzar M A
Faculty of Dentistry, University of Jordan, Amman.
J Oral Rehabil. 1998 Sep;25(9):725-9. doi: 10.1046/j.1365-2842.1998.00300.x.
In this investigation the effect of denture thickness on tooth movement during processing of complete dentures was studied. A maxillary cast from a patient was duplicated to obtain 10 identical casts. Base plates were constructed on five casts using 1.25 mm thick wax. Base plates were constructed on the other five casts using 2.5 mm thick wax. Teeth were placed on the ridge of each cast and a TMS pin was placed vertically, upright, in each tooth. The dentures were invested, cured, decasted, finished and polished. Each denture was radiographed immediately before processing, after deflasking, on removal from the cast and after finishing and polishing using a standard technique. The radiographs were digitized using an Eikonix image digitizer. The results showed that there were significant variations in tooth movement between thick and thin denture bases. Also an increase in the molar-to-molar distance was found in both the thin and thick dentures but the magnitude of tooth movement was more in thick dentures.
在本研究中，对全口义齿制作过程中义齿厚度对牙齿移动的影响进行了研究。复制了一位患者的上颌模型以获得10个相同的模型。在5个模型上使用1.25毫米厚的蜡制作基托。在另外5个模型上使用2.5毫米厚的蜡制作基托。将牙齿放置在每个模型的牙槽嵴上，并在每颗牙齿中垂直放置一根TMS销。义齿进行包埋、固化、脱模、修整和抛光。在加工前、脱模后、从模型上取下后以及使用标准技术完成和抛光后，立即对每个义齿进行X线摄影。使用Eikonix图像数字化仪对X线片进行数字化处理。结果表明，厚义齿基托和薄义齿基托之间的牙齿移动存在显著差异。此外，在薄义齿和厚义齿中均发现磨牙间距离增加，但厚义齿中牙齿移动的幅度更大。
