| 摘要 |
PROBLEM TO BE SOLVED: To provide a novel method of filling a root canal capable of easily and closely sealing the root canal by adding a shape memory function to a dental root canal filling material. SOLUTION: Trans-polyisoprene, most widely used as a main component of the dental root canal filling material in the current clinical operation, is easily cross-linked by sulfur or dicumylperoxide, and a molding obtained from the cross-linking has an excellent shape memory function. By paying attention to the above facts, the dental root canal filling material, molded in the shape larger than a root canal to be filled, is manufactured by the method as follows. The root canal filling material is softened with heat and deformed into an insertable shape inserted into the root canal. Then, the deformation is fixed by cooling the material at 0°C, and after that, the root canal filling point, thinly deformed and fixed, is inserted into the root canal. At the time, the root canal filling material is closely attached to the wall of the root canal while restroing the shape with the stimulation of the temperature in the mouth cavity. In this way, the root canal can be closely sealed. COPYRIGHT: (C)2004,JPO
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