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[Clinical evaluation of flowable composites in treatment of wedge-shaped defects as a liner]
Xiang-ru Li1, Jing Wang, Hong-wen Li
1Department of Stomatology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, China. sywfirst@163.com
Purpose:
To evaluate the clinical effects of flowable composite as a liner in treatment of wedge-shaped defects.
Methods:
Three hundred and sixty teeth from 85 patients with wedge-shaped defects were studied. The self-control design was used in this study. Teeth were randomly divided into experimental group which were restored with composite resin after using flowable composite as a liner in one side, and the control group which were filled with composite resin directly in the other side. The modified USPHS/Ryge criteria were used to evaluate the treatment effects after 1 year and 3 years. SPSS12.0 software package was used for statistical analysis.
Results:
There was significant difference between the 2 groups in postoperative sensitivity. The experimental group had higher successful rate than the control group. In marginal integrity, the successful rate of the experimental group was 100% after 1 year, higher than 95.65% in the control group (P<0.01). The successful rate of the experimental group was 98.56% after 3 year, higher than 92.42% in the control group (P<0.01). In postoperative sensitivity: the experimental group had no sensitive cases after 1 year, while the control group had 6 teeth with moderate sensitivity which needed to change the restoration. The experimental group was better than the control group, the difference was statistically significant (P<0.05).
Conclusion:
It can be concluded that flowable composites as a liner in restoration of wedge-shaped defects may improve the marginal integrity and reduce the postoperative sensitivity.
