关键词: 斜裂牙, 牵拉, 粘结, 固定, 冠修复

Abstract: Objective To explore the effect of preservation of inclined fractured permanent molars by transverse fixation with screw post, and provide a practical method for reserving the inclined fractured permanent molars. Methods Clinical data of 50 patients with inclined fractured permanent molars by transverse fixation with screw post in the Department of Stomatology of Tianjin First Central Hospital between January 2010 to December 2011 were reviewed retrospectively. After fixing the crown with steel- wire binding and root canal treatment, the molars were drilled a hole buccolingually and placed screw post. The flowable light-curing composite resin was used to seal the crack and bond screw post to prevent the relative movement. All treated molars were restored with full crown. All patients were followed up for 10-60 months. The therapeutic effects were observed. Results After 5 year-follow-up, 41 cases were cured completely, 6 cases were cured clinically, and 3 cases failed treatment. Conclusion The transverse fixation with screw post and bonding technique can preserve the inclined fractured molars to gain chewing function and avoid or reduce the extraction of affected teeth, which provides a better restoration effect.

Key words: inclined fractured tooth, traction, fixation, bond, full crown