Tenax Fiber White玻璃纤维桩修复前牙残根残冠

目的 评价Tenax Fiber White玻璃纤维桩加全瓷冠修复前牙残根残冠的临床效果.方法 对42例64颗已行完善根管治疗的前牙残根残冠进行玻璃纤维桩核加全瓷冠修复.按照牙体预备后余留牙本质高度分为3组,A组余留牙体高度大于等于2 mm,B组高度小于2 mm并大于或等于1mm,C组高度小于1 mm.治疗完成后1、6、12、24个月复查,评价修复体完整性,边缘适合度,牙周组织健康状况及根尖周健康状况等疗效.结果 95.3%的修复体保持完整.有2例修复体发生桩脱位,其中1例伴有崩瓷,为咬硬物所致,1例根管粗大.另有1例发生纤维桩折断,牙龈充血.余留牙体在0～1 mm组无箍效应,修复失败率增加(P<0.05).全瓷冠类型无明显影响.其他所有修复体边缘适合性良好,色泽稳定,牙龈状况良好.X线片未见根尖异常,未见根折或桩折.结论 纤维桩全瓷冠修复效果除了与牙本质肩领高度有关,还与余留牙本质的性状有关,临床选择应综合考虑.在符合适应证的情况下,Tenax Fiber White玻璃纤维桩和全瓷冠修复可获得良好修复效果.

Application and analysis of esthetic restoration of anterior residual roots and crowns by Tenax Fiber White glass fiber posts and all ceramic crowns

Objective To evaluate the effect of the glass fiber-reinforced posts with all ceramic crowns on restoration of the residual roots and crowns in the anterior teeth.Methods 64 anterior residual roots and crowns from 42 cases after root canal therapy were restored by glass fiber-reinforced posts and all ceramic crowns.According to the height of residual dentin,they were divided into three groups:Group A,in which the height of dentin collar was no less than 2 mm;Group B,between 1 and 2 mm;and Group C,less than 1 mm.Clinical and radiographic examinations were conducted and recorded after 1,6,12,and 24 month.Results 95.3% restorations were successful,with satisfied marginal adaptation and healthy gingiva.No dislodgment or fracture of posts or roots was observed in clinical and radiographic examination.However,3 restorations were failed.In two cases,the fiber posts were dislodged either by biting hard food or by the flared root canal,and in another one,the post was fractured and gingivitis occurred.Group C had significantly higher restoration failure due to the absent of the ferrule effect(P<0.05).Conclusions This study indicated that the effect of the restoration with fiber-reinforced post and all ceramic crown depended on both heights and properties of residual dentine.The application of Tenax Fiber White glass fiber-reinforced post and all ceramic crown would be a good choice for restoration of anterior residual crowns and roots When meeting the requirements of indication.