A model for dentinal caries progression by digital subtraction radiography.
A model for dentinal caries progression by digital subtraction radiography.
复制标题
通过数字减影射线照相术进行牙本质龋齿进展的模型。
DOI：
10.1016/0022-3913(90)90305-v
复制
发表时间：
1990
期刊：
影响因子：
--
通讯作者：
Potts,TV
中科院分区：
文献类型：
--
作者：
Maggio,JJ;Hausmann,EM;Allen,K;Potts,TV
将具有预先存在的龋损的拔牙在37° C下在人工唾液缓冲液中体外孵育。四颗牙齿暴露于单独的缓冲液，四颗暴露于含有5%葡萄糖的缓冲液，四颗暴露于含有5%蔗糖的缓冲液。使用固定牙齿位置的定向装置、X射线胶片和X射线管准直器对龋损进行延时X射线摄影。使用数字减影X线摄影对8周内的X线照片进行分析。减影图像显示，仅在唾液中孵育的四颗牙齿中有三颗在病变深度处显示出放射密度增加（钙化）;一颗牙齿没有显示出可检测到的变化。在5%葡萄糖存在下孵育的四颗牙齿中，有三颗显示出射线可透性增加（脱矿）;一颗没有显示出可检测到的变化。在5%蔗糖存在下孵育的四颗牙齿表现出与在5%葡萄糖中孵育的牙齿相似的结果。
Extracted teeth with preexisting carious lesions were incubated in vitro at 37° C in an artificial saliva buffer. Four teeth were exposed to buffer alone, four to buffer containing 5% glucose, and four to buffer containing 5% sucrose. Time-lapse radiographs were made of the carious lesions using an orienting device that fixed the position of the tooth, x-ray film, and x-ray tube collimator. The radiographs were analyzed over a period of 8 weeks using digital subtraction radiography. The subtracted images revealed that three of the four teeth incubated in saliva alone showed an increase in radiodensity (remineralization) at the depths of the lesion; one tooth showed no detectable change. Three of the four teeth incubated in the presence of 5% glucose showed increased radiolucency (demineralization); one showed no detectable change. The four teeth incubated in the presence of 5% sucrose exhibited results similar to those teeth incubated in 5% glucose.