[The effects of occlusal adjustment on retention of dental wedge-shaped defect]

To observe the retention of filling material for dental wedge-shaped defects after occlusal adjustment, patients in the experimental group was given suitable occlusal adjustment before filling with glass ionomer cements or light-curing composite resin according to the patient's requirements. Evaluation was carried out by statistical analysis after one year. The results showed significant difference in the retention between the experimental group and the control group (P<0.01) after one year. It's concluded that suitable occlusal adjustment of the teeth with wedge-shaped defect is beneficial to the retention of filling material.