摘要目的:探讨磨牙隐裂保存治疗的意义;
方法:随机选择102例(121颗牙),经牙冠结扎,制取模型,常规根管或塑化治疗,15天~30天后,以烤瓷冠修复,随访5年,对其效果进行分析,
结果:经上述方法治疗,效果优良者105颗牙,占86.7%,失败15颗牙,占13.2%。结论:磨牙隐裂保存治疗效果良好,在保持患者咀嚼功能,提高生活质量等均具有一定价值。
关键词牙冠牙隐裂烤瓷牙修复
JZ(WT4”HZCoronal Restorations for molar crown cracks102 cases reports
[WT5”BZ]Bai Pinghua,et al
(ChangXing Chinese Mediacal Hospital, 313100)
Abstract:Aim:to investigate the coron
al restorations for the molar crown cracks after the endodontical treatments. Methods: 102 crowncracked molar teeth were restored with the ceramicometal restorations subsequent to canal filling, or resinfication. All cases were observed over 5year followup study. Results:Nice clinical results were 87.6%, and only 12.4% cases were failed. Conclusion: The clinical investigation revealed that the coronal restorations of the cracked molars preserved the mastication function and enhance the living quality to some degree.
Key words: crown;tooth crack;ceramicometal restorations
磨牙是发挥咀嚼功能的主要牙齿,在磨牙颌面上存在众多沟裂或一些先天性缺陷等[1],因此,创伤损坏的机会很常见,其中,尤以牙冠隐裂最为多见,自86年迄今,我们曾对102例(121颗牙)施行隐裂冠保存治疗,效果堪称满意,现结合临床资料报告如下:
1临床资料
本组102例(121颗牙),男81例(98颗牙),女21例(23颗牙),男∶女为4.26∶1,其中,第一磨牙最多,共82颗牙,占67.8%,第二磨牙次之,共19颗牙,占15.7%;第一前磨牙第三,共12颗牙,占9.9%,第二前磨牙最少,仅8颗牙,占6.6%。
2治疗方法
在选择好必要的常规材料后,诸如结扎丝,白合金片,根管充填剂等,再按下述步骤进行:①在折裂牙冠颈、舌侧(上颌牙为腭侧)牙颈部磨出深约2 mm沟槽,并用0.3 mm结扎丝作环形结扎;②即取印模,灌模,在模型上进行片切;分别制取石膏代模及硬铅代模,用白合金片做成金属开面冠[2]磨除面早接触部分;将调和稀