Pashley E L, Tao L, Pashley D H
Department of Oral Diagnosis and Patient Services, School of Dentistry, Medical College of Georgia, Augusta.
Am J Dent. 1993 Aug;6(4):189-91.
Extracted human teeth were randomly divided into three groups. Group 1 teeth were untreated and served as controls. Group 2 teeth were sterilized in a steam autoclave. Group 3 teeth were sterilized by exposure to ethylene oxide gas. Crown segments were then prepared from these teeth by resection of the roots at the CEJ and the occlusal enamel to expose a flat occlusal plane of dentin. The permeability of the dentin was determined to be similar in all three groups. The shear bond strength of Prisma Universal Bond 3 and C&B Metabond was also similar in all groups indicating that sterilization of teeth does not alter dentin permeability or bond strength.
拔除的人牙被随机分为三组。第1组牙齿未作处理，作为对照组。第2组牙齿在蒸汽高压灭菌器中进行灭菌。第3组牙齿通过环氧乙烷气体暴露进行灭菌。然后从这些牙齿上制备冠段，方法是在牙骨质牙釉质界（CEJ）处切除牙根，并去除咬合面釉质，以暴露出平坦的牙本质咬合面。测定发现所有三组中牙本质的渗透性相似。在所有组中，Prisma Universal Bond 3和C&B Metabond的剪切粘结强度也相似，这表明牙齿灭菌不会改变牙本质渗透性或粘结强度。
