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    • 89. 发明公开
    • METHOD FOR OBTURATING AN EXTIRPATED ROOT CANAL
    • VERFAHREN ZUM VERSCHLIESSEN EINES EXSTIRPIERTEN WURZELKANALS
    • EP0691826A4
    • 1996-03-27
    • EP93904710
    • 1993-01-26
    • MCSPADDEN JOHN T
    • MCSPADDEN JOHN T
    • A61C5/04A61K6/00A61C5/02A61G5/02
    • A61C5/50A61C5/55A61K6/0038C08L7/00C08L23/20A61K6/083
    • A method of obturating an extirpated root canal (22) and an associated filler material (50 and 62) utilizes two classes of gutta-percha, one class (50) of which becomes plasticized at a predetermined temperature and the other class (62) of which becomes plasticized at a temperature which is less than the predetermined temperature. In one embodiment of the method, the second class of gutta-percha is coated about the first class when in a plasticized condition, and in another embodiment of the method, the second class is pre-coated about the first class and the second class is heated to plasticize condition without plasticizing the first class. In either case, the first class of gutta-percha supports the plasticized second class when subsequently introduced into a root canal for filling the canal. To increase the rigidity of the first class of gutta-percha, the first class may be coated with a cured (58) layer of methyl methacrylate before the second class of gutta-percha is coated about the first class. Following introduction of the two classes of gutta-percha into the canal, the classes may be condensed within the root canal system.
    • 填充拔除根管和相关填充材料的方法利用两类gutta-percha,其中一类在预定温度下变形,另一类在小于预定温度的温度下变形。 在该方法的一个实施方案中,当处于增塑状态时,第二类gutta-percha围绕第一类涂覆,并且在该方法的另一个实施方案中,第二类是关于第一类预涂,而第二类是 加热至塑化条件,不会使头等塑化。 在任何一种情况下,第一类gutta-percha在随后被引入根管以填充运河时支持塑化的第二类。 为了提高第一类牙釉质的刚性,第一类可以在第一类包衣之前涂覆甲基丙烯酸甲酯的固化层。 在将两种类型的牙龈穿入运河后,这些类可以在根管系统内浓缩。