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前牙较易发生楔状缺损,在做根管治疗时,传统上均在舌面开髓,其缺点一是破坏了牙体的完整结构,抗力减弱,容易折裂;二是充填时不能直线进入根管,增加了操作难度,达不到理想的充填效果。为此作者近年来对20例27枚楔状缺损严重的前牙试探性地在其唇面开髓,使充填能直线进入,获得满意效果,初步报告如下: 临床资料 27枚前牙中尖牙15枚,下侧切牙9枚,下中切牙2枚,上侧切牙1枚。伴有急慢性根尖周炎者20枚,占74％。伴有脓瘘者5枚。
Anterior teeth more prone to wedge-shaped defects, while doing root canal therapy, traditionally have open the pulp in the tongue, the disadvantage is the destruction of the complete structure of the tooth, resistance weakened, easy to fracture; the second is filling can not be a straight line Root canal, increasing the difficulty of operation, achieve the desired filling effect. In this regard, the author in recent years, 20 cases of 27 wedge-shaped defect of the anterior teeth tentatively open their lips in the lip, the filling can be a straight line to obtain satisfactory results, the preliminary report is as follows: Clinical data 27 anterior teeth 15 Pieces, the lower side of the incisor 9, the lower incisor 2, the upper incisor 1. 20 with acute and chronic apical periodontitis, accounting for 74%. 5 with pus fistula.