摘要
目的:比较改良的核桩蜡型制作法(简称"改良法")和传统蜡型制作法(简称"传统法")在后牙残根修复中的效果。方法:取单根管的下颌第一前磨牙和双根管的上颌第一前磨牙各10颗,并分为单根管组和双根管组,每组分别用改良法和传统法制作核桩蜡型,统计分析两种方法制作一次性成功率,并分析失败原因。结果:单根管组传统法和改良法一次性成功率分别为20%和77%,差别有统计意义(χ2=16.88,P<0.01),双根管组两种方法一次制作成功率分别为11%和63%,差别也有统计意义(χ2=17.01,P<0.01)。传统法失败的原因依次为:侧壁缺损、颈部折断和长度不足,改良法则为:侧壁缺损和长度不足。结论:无论在单根管组还是在双根管组,改良的核桩蜡型制作法的一次性成功率高于传统方法,同时能保证核桩长度及和根管壁的密合性,适于后牙残根的修复,能给临床医师和技师带来便利。
Objective：Comparison of of two post and core waxing techniques used to posterior residual root restoration.Methods：10 upper first premolars with two root canals and 10 lower first premolars with single root canal were divided into dual-canal group and single-canal group respectively.Post and core waxing was made by two different techniques in each group.The one-off success rate was recorded and the defects or failing reasons were analyzed.Results：The one-off success rate of traditional and improved techniques in the single-canal group was 20% and 77% and the difference was of statistical significance difference （χ2=16.88,P0.01）.And in the other group it＇s 11% and 63% respectively of and statistically different （χ2=17.01,P0.01）.The failing reasons of traditional technique were defect of lateral wall,cervical fracture and deficient of length.Those of improved technique were defect of lateral wall and deficient of length.Conclusion：The one-off success rate of the reformed technique for the post and core waxing was higher than the traditional technique in each group.The modified technique can guarantee the post and core length and lutation of lateral wall of post and core waxing and adapt to the restoration of posterior residual root,meanwhile,it can benefit clinical dentists and technicians.
出处
《口腔颌面修复学杂志》
2010年第3期151-153,共3页
Chinese Journal of Prosthodontics
关键词
残根
核桩
蜡型
residual root
post and core
waxing
