Abstract

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Title:: Adverse effects of laser-aided ceramic brackets debonding on enamel and dental pulp: a Meta analysis

Author(s):: SUN Lizhong1; 2; WANG Ruofan1; 2; WANG Linxuan1; 2; WANG Qi1; 2; MA Wenqiang1; 2; HAN Mei2; MI Fanglin1; 2; 1. Affiliated Hospital of North Sichuan Medical College, Nanchong 637000, China; 2. North Sichuan Medical College, Nanchong 637000, China

Keywords:: ; laser; ceramic brackets; adhesive remnant index; pulp temperature

Abstract:: Objective To perform a Meta analysis for evaluating the adverse effects of laser-aided ceramic brackets debonding on enamel and dental pulp. Methods We searched The Cochrane Library (2017, No.12), PubMed, CBM, CNKI, WanFang Database from inception to December, 2017 for collecting relative studies about the adhesive remnant index and pulp temperature after laser-aided ceramic brackets debonding. Two reviewers independently screened literatures, extracted data and assessed the risk of bias of included studies. Stata 12.0 was applied for statistical analysis and Revman5.3 for subgroup analysis. Results The effect of laser irradiation on adhesive remnant index was searched in 7 studies while pulp temperature in 6 studies. The results of Meta analysis revealed that the pooled-mean difference (MD) and 95% confidence interval (95%CI) for continuous variables of adhesive remnant index with or without being affected by laser before ceramic brackets debonding were [MD=0.074, 95%CI(-0.472-0.619), P=0.791], and that laser irradiation significantly improved the pulp temperature [MD=3.69, 95%CI(2.71-4.66), P=0.000]. Moreover, the laser irradiation with appropriate parameters didn’t cause any irreversible injuries to pulp. Conclusion The laser applied in ceramic brackets debonding has no significant effects on the adhesive remnant index but leads to an increase of pulp temperature.