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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,其缺点有二:一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,近80%。伴有脓瘘者5例。治疗方法:在唇面楔状缺损上方作为开髓点开髓,使其与横行缺损呈“(?)”型。在保证切缘完整的前提下尽量靠近切缘,使开髓方向与根管近似于平
Anterior teeth more prone to wedge-shaped defect, while doing root canal treatment, traditionally have open the pulp in the tongue, its shortcomings are two: First, destroy the complete structure of the tooth, resistance weakened, easy to fracture; Second filling Can not be straight into the root canal, increasing the difficulty of operation, fail to achieve the desired filling effect. To this end the author in recent years, 20 cases of 27 wedge-shaped defect of the anterior teeth tentatively opened in the labial surface of the lip, the filling can be a straight line to obtain satisfactory results, the initial report is as follows. Clinical data: 27 anterior canine fangs 15, 9 lower incisors, 2 lower incisors, 1 upper incisor, and 20 acute and chronic apical periphras, nearly 80%. 5 cases with pus fistula. Treatment: above the wedge-shaped defect on the lips as a point of opening open pulp, with transverse defects was “(?)” Type. In the premise of ensuring the integrity of the margins as close to the margin, so that the direction of the pulp with the root canal similar to the flat