Navarro Ricardo L, Oltramari Paula V P, Henriques José F C, Capelozza Ana L A, Sant'ana Eduardo, Granjeiro José Mauro
Orthodontics Department, Bauru Dental School, University of São Paulo, Bauru, São Paulo, Brazil.
Vet J. 2007 Jul;174(1):165-9. doi: 10.1016/j.tvjl.2006.06.004. Epub 2006 Aug 9.
Techniques were developed to obtain standardised intra- and extra-oral radiographs in minipigs for use in medical-dental research. Twelve male minipigs (BR-1 Minipigs) were chosen at random. Two animals each at 3, 5, 7, 9, 12 and 15 months of age were anaesthetised and subjected to radiographic examinations to assess six techniques. Three intra-oral and three extra-oral techniques, standardised for humans, were used with variations of the angle of incidence of the X-ray beams, focus-film distance and exposure time. Two film positioners were developed for the intra-oral techniques. Two examiners then chose the radiographs with the least image distortion, greatest clarity and least superimposition of images. For each technique, the suitable angle of incidence of the X-ray beams, the focus-film distance and exposure time that produced the highest quality radiographs were standardised.
已开发出相关技术，用于在小型猪身上获取标准化的口腔内和口腔外X光片，以用于医学牙科研究。随机挑选了12只雄性小型猪（BR - 1小型猪）。分别对3、5、7、9、12和15月龄的两只动物进行麻醉，并进行X光检查以评估六种技术。使用了三种针对人类标准化的口腔内技术和三种口腔外技术，并改变X射线束的入射角、焦点 - 胶片距离和曝光时间。为口腔内技术开发了两种胶片定位器。然后，两名检查人员选择图像失真最小、清晰度最高且图像叠加最少的X光片。对于每种技术，对产生最高质量X光片的合适X射线束入射角、焦点 - 胶片距离和曝光时间进行了标准化。
