Sreekrishnan B, Ajithkumar K, Sadashivshetty K
Department of Orthodontics, Bapuji Dental College, Davangere, India.
Indian J Dent Res. 1995 Oct-Dec;6(4):129-31.
Various methods have been used to study the root canal morphology of human teeth. The purpose of this study was to develop a technique for the formation of a resin replica of the root canal morphology of maxillary first premolars. 30 recently extracted maxillary first premolars were used for the study. An occlusal access cavity was prepared and the teeth placed in 5% sodium hypochlorite solution to dissolve the pulp remnants. The teeth were then rinsed in water. A two-part resin system was then introduced into the root canal through the access cavity opening. Subsequent to curing the resin using a specific curing cycle the specimens were put in 20% hydrochloric acid. This facilitated the dissolution of the tooth and the retrieval of the resin replica of the root canal. The different types of root canal morphology observed are discussed. The relevance and utility of the resin models and further possibilities in this field are discussed.
已采用多种方法研究人类牙齿的根管形态。本研究的目的是开发一种技术，用于制作上颌第一前磨牙根管形态的树脂复制品。30颗近期拔除的上颌第一前磨牙用于该研究。制备了一个咬合入路洞，将牙齿置于5%次氯酸钠溶液中以溶解牙髓残余物。然后将牙齿在水中冲洗。接着通过入路洞开口将一种双组分树脂系统引入根管。使用特定的固化周期固化树脂后，将标本放入20%盐酸中。这有助于牙齿溶解并取出根管的树脂复制品。讨论了观察到的不同类型的根管形态。还讨论了树脂模型的相关性和实用性以及该领域的进一步可能性。
