Objective: To evaluate the diagnostic efficacy of the bitewing radiograph(BWR),clinic examination(CE) and laser fluorescence examination (LF) for detection of initial posterior approximal caries .

• 目的 :体外评价比较平行投照的牙合翼片 (BWR)、激光荧光法 (LF)和模拟临床检查 (CE)等 3种诊断方法对早期邻面龋的诊断水平。