ABSTRACT
Objective: To observe the clinical effect of the intraalveolar transplantation for upper anterior teeth with crown-root fracture. Methods: 18 Maxillary anterior teeth with crown-root fracture in 15 cases were included. Surgical extrusion with 180° rotation of the dental remnant was performed for the teeth with deep fracture line at the palatal side,and without rotation for the deep fracture line at labial side. After root canal therapy with Metapex under local anesthesia,the roots were surgical extracted to the required position and fixed to adjacent teeth by interdental suture and flexible fiber strip splint. 1 week after operation the suture was removed,3 to 4 weeks later the splint was removed and root canal therapy was conducted,then the teeth were repaired by composite resin crown /post-core crown. Clinical and radiographic examinations were performed at 1 month,3 months,6 months and 3 years after treatment. Results: The average 4 mm extrusion was acquired for the 18 teeth. All patients were satisfied with the treatment outcome and can exercise the normal function. The first 1 to 3 month after surgery,the mobility was less than 1°,periodontal soft tissue was healthy. X-Ray examination showed periapical bone density was significantly increased from the periapical to the alveolar ridge. 3 to 6 months after treatment,the crestal bone resorption was not further developed,angular absorption image disappeared,and complete new bone was formed in the periapical area. 6 months postoperatively,lamina dura was observed in the alveolar bone in almost all of the teeth. Labial gingiva of 10 teeth(55. 56％) was mild retreat(≤1 mm) compared with adjacent teeth. Conclusion: Intraalveolar transplantation method is effcective and time-saving in the treatment of the tooth with complicated crown-root fracture.