数字模型分析在垂直型食物嵌塞治疗中的应用

Application of digital model analysis in the treatment of vertical food impaction

目的运用数字模型进行咬合接触分析,指导咬合接触重建.探讨数字化技术在治疗垂直型食物嵌塞中的应用价值.方法将74例垂直型食物嵌塞患者随机分为试验组和对照组.试验组使用3shape口内扫描仪获取牙齿解剖形态及咬合关系信息,生成数字化模型,对数字模型上显示的咬合接触区接触分布及强度进行分析、诊断.对照组常规使用咬合纸检查咬合接触.两组患者均采用调牙合和微创修复治疗方式改善咬合接触.术后1个月进行临床效果评估,统计两种方法咬合接触位点重叠率.结果食物嵌塞治疗有效率试验组94.59%,对照组97.30%,两者无统计学差异(P>0.05).两种方法咬合接触位点重叠率95.7%.结论使用数字模型对食物嵌塞进行分析诊断操作简便直观,能正确指导临床调牙合与咬合接触重建.

Objective To perform occlusal contact analysis using a digital model and guide occlusal adjustment and reconstruction.To evaluate the application value of digital technology in treating food impaction.Methods Seventy-four patients with vertical food impaction were randomly divided into two groups.In the experimental group,the information about anatomical morphology and occlusal relationship of teeth was obtained by using an oral digital impression scanner to generate a digital model.The food impaction was analyzed and diagnosed according to the contact distribution and intensity in the occlusal contact area shown on the digital model.In the control group,occlusal contact was checked with occlusal paper.Patients in both groups were treated with occlusal adjustment and minimally invasive repair to improve occlusal contact.Clinical effect was evaluated one month after operation.The overlap rate of occlusal contact sites between the two methods was counted.Results The effective rate of treating food impaction was 94.59%in the experimental group and 97.30%in the control group,and there was no statistical difference between them(P>0.05).The overlap rate of occlusal contact site between the two methods was 95.7%.Conclusion Using digital model to analyze and diagnose food impaction is simple and intuitive,which can accurately guide occlusal adjustment and occlusal contact reconstruction.