双步成形直接树脂充填法重建邻牙合面洞邻接关系初步研究  

A priliminary study of rebuilding proximal contacts of class Ⅱ posterior composite restoration with dual-matrix placement technique

作　　者：黎耀荣[1] 周禹雄[1] 刘瑜容[1] 

机构地区：[1]中山大学附属东莞东华医院,广东东莞523120

出　　处：《牙体牙髓牙周病学杂志》2012年第11期659-661,652,共4页Chinese Journal of Conservative Dentistry

摘　　要：目的:改良复杂条件下邻牙合面洞重建邻接关系的方法。方法:以制洞后临床邻牙合面病损为母本,经"硅橡胶印模-自凝树脂灌制"流程得36个带软性牙龈的树脂模型。模型平均分A、B、C 3组,由同一高年资医师实施修复,A组以Ivory成形技术,B组以palodent技术树脂修复,C组采用改形后常规Ivory成形片修复颈1/3,palodent成形片修复牙合2/3,两步成形法树脂修复。术后评估修复区邻接紧密度和外形,评分采用单因素方差分析。结果:3组间修复质量评分均有显著统计学差异。结论:体外小规模模型研究条件下,基于Ivory加palodent技术分步双成形直接树脂充填法可重建邻牙合面洞邻接关系,比单独使用环周成形系统技术更佳的邻接触紧密度,比单独应用瓣状成形系统技术更合理的邻接区形态。AIM ： To improve the technique for rebuilding proximal contacts of Class II cavity restorations of posterior teeth by composite resin. METItODS：A clinical case with class II cavity in posterior tooth was used. After cavity preparation, the cavity was translated into 36 resin models by salicon impressiion-resin irrigating-copying process. The models were divided into 3 groups . Group A, B and C were restored by Ivroy technique, palodent tech- nique and a combination of Ivroy technique respectively. All cavities were restored by the same skilled operator. Inde- pendent assessment of the contact tightness and contour of each restoration was made after cavity filling. All data were analyzed using one-way ANOVA and LSD post-hoc tests （ P 〈 0.05 ） . RESULTS ： Significant differences were found between 3 groups regarding proximal contact tightness and contour. CONCLUSION：Dual-matrix-placement technique plus Ivory technique and palodent technique achieved the goal of rebuilding proximal contacts of posterior teeth by composite resin restoration.

关 键 词：复合树脂 成形片 模型 试验性研究 

分 类 号：R781.05[医药卫生—口腔医学]