Comparison of clinical performance of glass ionomer cement vs. composite resin in restorations of non-carious cervical lesions: A systematic review and meta-analysis

Background: To compare the clinical performance of glass ionomer cement (GIC) vs. composite resin (CR) in restorations of non-carious cervical lesions (NCCL). Material and Methods: A bibliographic search was conducted until October 2023, in the biomedical databases: PubMed/Medline, Cochrane Library, SciELO, Scopus, Web of Science and Google Scholar. Randomized clinical trials reporting the effect of GIC compared to CR in the restoration of NCCLs were included, without restrictions on publication date or language. The RoB 2.0 tool was used to assess the risk of bias of the included studies and the GRADEPro GDT tool was used to assess the quality of evidence and the strength of recommendations. Results: The search yielded a total of 296 articles. After excluding those that did not meet the selection criteria, 18 articles remained for the quantitative synthesis. The analysis found no statistically significant differences between CR and GIC in the restoration of NCCLs. Conclusions: The literature reviewed suggests that there are no differences in clinical performance over time when restoring NCCLs with CRs or GICs.