论文部分内容阅读
作者自1987年至今,用根管桩(或不锈钢丝桩)及光固化粘结技术再接前牙断冠,共26例患者28颗牙齿。选择的前牙外伤,冠横折伴牙髓暴露,冠折3/5至 2/3之间,牙根情况好,牙根折,松动度不大。具体操作为断冠牙常规根管治疗;断冠用75％酒精消毒,干燥,酸蚀30秒,水冲洗、干燥后,涂布光固化粘结剂、用气枪吹均呈一薄层,然后将离体断冠正确对接于近根端断冠上,用力加压挤出多余粘结剂,修整光滑后,唇舌面分别光照40至60秒使其聚合、固化。经过6个月至9年的追踪观察。28颗再接牙中,良好27颗,失败1颗。失败的原因是由于进食时不慎咬到砂粒碎裂,离体冠碎裂无法再利用,改用光固化树脂修复。
Since 1987, the author has used a root canal pile (or stainless steel wire post) and a light-cured bonding technique to connect the anterior crown, a total of 26 teeth of 28 patients. The choice of anterior tooth trauma, coronal cross with pulp exposure, between the crown of 3/5 to 2/3, the root condition is good, the root fold, little mobility. The specific operation for the deciduous teeth conventional root canal treatment; broken crown with 75% alcohol disinfection, drying, acid etching 30 seconds, water rinse, drying, coating light curing adhesive, blown with air gun showed a thin layer, and then Correct butt off the broken crown in close to the root end of the broken crown, forced extrusion of excess binder, smooth after the tongue and the tongue were light 40 to 60 seconds to light polymerization, curing. After 6 months to 9 years of follow-up observation. 28 teeth then teeth, good 27, failed 1. The reason for the failure is due to inadvertently bite the grit when eating, isolated crown fragmentation can not be reused, use light curing resin repair.