Comparison of Surface Roughness Between Nanofilled and Microhybrid Composite Resin after Toothbrushing: a Systematic Review and Meta-analysis
Keywords:Surface roughness, Tooth brushing, Nanofilled composite resin, Microhybrid composite resin, Meta-analysis
Background: Tooth Brushing is one of the most effective methods for removing dental plaque. However, tooth brushing has an effect on wear and surface roughness of restorative materials especially at cervical area and root surface which is directly affected area. Surface roughness of restorative material has direct effect on accumulation of bacteria and dental plaque. There is still controversy in comparation between surface roughness resistance of nanofilled and microhybrid composite resin after tooth brushing.Objective: Systematically review the literature and meta-analysis on a difference between surface roughness of nanofilled and microhybrid composite resin after toothbrushing.Method: The related studies were searched from electronic database PubMed and Google Scholar from 2000 until 2020. In total, 9 experimental studies met inclusion criteria and were included in meta-analysis. Risk of bias was assessed by ROBINS-I tool. Extraction data which were means and standard deviations of surface roughness before and after brushing.Result: Nanofilled composite resin has pooled SMD 3.250 (95% CI=2.234, 4.267; 8 studies, 114 samples, very low-certainty evidence), nanohybrid composite resin has pooled SMD 2.681 (95% CI=1.636, 3.727; 6 studies, 115 samples, very low-certainty evidence) and microhybrid composite resin has pooled SMD 2.951 (95% CI=2.027, 3.876; 9 studies, 119 samples, very low-certainty evidence) while data was high heterogeneity (respectively I2=82.4%, I2=87.4%, I2=78.8%). There was no high risk of bias in all assessment topics.Conclusion: Surface roughness of composite resins after brushing were increased which nanofilled composite resin was more than nanohybrid and microhybrid composite resin respectively. But because of high heterogeneity of data, few studies and possible risk of bias problems, the further higher quality researches and randomized controlled trials experimental research are still required to answer this question and for selection of restorative material in area which is directly affected by tooth brushing.
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