Karimi Z, Kessa S, Chala S, Abdallaoui F
Odontostomatol Trop. 2015 Sep;38(151):5-12.
To assess the quality of proximal coronary restorations and bring out the factors influencing this quality.
A transversal study on 160 radiographs of proximal coronary restorations was conducted at the University Center of Dental Consultation and Treatment of Rabat. Restorations were evaluated according to the modified USPHS criteria. Four variables were studied: restoration material, treated tooth, cavity type and location of treatment in order to identify the influencing factors.
Forty five per cent of the evaluated proximal coronary restorations required replacement. The main cause of failure was recurrent caries in 36% of cases, followed by the absence of the contact point (24.4%), unacceptable proximal coronary outline (13.8%), and finally dentin exposure (6.9%). Thus, it turned out that there is a difficulty to restore correctly posterior proximal cavities especially using amalgam and a high rate of recurrent caries at both the anterior and posterior teeth.
Both a clinical and a radiographic evaluation after each proximal restoration would be recommended to reduce failure.
评估近端冠状动脉修复体的质量，并找出影响该质量的因素。
在拉巴特大学牙科咨询与治疗中心对160张近端冠状动脉修复体的X光片进行了一项横向研究。根据改良的美国公共卫生署（USPHS）标准对修复体进行评估。研究了四个变量：修复材料、治疗牙齿、龋洞类型和治疗位置，以确定影响因素。
45%的评估近端冠状动脉修复体需要更换。失败的主要原因是36%的病例出现复发性龋齿，其次是接触点缺失（24.4%）、近端冠状动脉外形不可接受（13.8%），最后是牙本质暴露（6.9%）。因此，事实证明，正确修复后牙近端龋洞存在困难，尤其是使用汞合金时，并且前后牙的复发性龋齿发生率都很高。
建议在每次近端修复后进行临床和影像学评估，以减少失败率。
