ABSTRACT
Abstract Objective: To compare the marginal degradation (susceptibility to marginal adaptation and marginal discoloration) of composite restorations placed in class II and V cavities using conventional and bulk-fill resin composites. Material and Methods: This study was approved by PROSPERO database (#42020201596). PubMed, Scopus, Embase, Web of Science, Lilacs, Cochrane, Open Grey, Clinical Trials, and Rebec databases were searched by three independent investigators using MeSH terms, supplementary concepts, synonyms, and free keywords, based on the PICOS strategy (P, population: restoration in permanent teeth; I, intervention: bulk-fill resin composite; C, comparison: conventional resin composite; O, outcome: marginal discoloration and adaptation; and S, study design: randomized and non-randomized clinical trials). The risk of bias was evaluated according to the Cochrane Collaboration's tool, the meta-analyses by RevMan software, the certainty of evidence by the Grading of Recommendations Assessment, Development, and Evaluation, and the leave-one-out sensitivity test. The prevalence of successful events and the total number of restorations were used to calculate the risk difference at a confidence interval of 95%, according to a fixed-effect model. The heterogeneity was evaluated using the I2 index. Results: 16 from 10,780 studies were selected and included for qualitative and quantitative analysis. Two studies were considered as high risk of bias, one showing some concerns, and 13 as low risk of bias. Four meta-analyses evaluated the marginal adaptation and marginal discoloration in class II and V cavities, with a nonsignificant heterogeneity (I2 = 0%, p>0.05). The certainty of evidence was considered high, except for two subgroups of each outcome. Conclusion: There is evidence that composite restorations using conventional and bulk-fill resin composites present similar clinical performance related to marginal degradation (AU).
Subject(s)
Meta-Analysis as Topic , Sensitivity and Specificity , Composite Resins , Systematic Reviews as Topic , Dental Marginal AdaptationABSTRACT
Objetivo: Avaliar a influência da exposição a um creme dental acidulado sobre a liberação de flúorde Cimentos de Ionômero de Vidro (CIV). Material e Métodos: Confeccionou-se 27 corpos de prova divididos em 3 grupos: G1 (Maxion - R), G2 (KetacMolar 3M/ESPE) e G3 (Vittremer 3M/ESPE), subdividido em subgrupos (n = 3): A (exposição ao creme dental flúor acidulado pH 4,5 / 7 h / 37ºC), B (exposição ao creme dental fluoretado não acidulado / 7 h / 37 ºC) e C (controle - exposição à saliva artificial). Após exposição aos cremes dentais,os corpos de prova foram imersos em saliva artificial e aferidas a liberação de flúor nos períodos de tempo:1 e 14 dias. Os dados obtidos foram submetidos a análise de variância, utilizando o pacote SPSS (Statiscal Package for Social Science). Aplicou-se seo Teste ANOVA com 5% de probabilidade, para comparação das médias e do comportamento de cada material. Resultados: A exposição ao creme dental ácido apresentou valores de liberação de flúor (ppm/mm2) que variaram, em suas médias, de 1 e 14 dias:G1A (0,269 a 0,204); G2A (0,394 a 0,038); G3A(0,080 a 0,123). Foi estatisticamente significante a relação entre os subgrupos para G1 em T1 e G3 emT1 e T14. Conclusão: a exposição ao creme dental acidulado influenciou positivamente a liberação de flúor do CIV híbrido testado e não impactou a liberação deste íon nos CIVs convencionais.
Objectives: To evaluate the acidulated dentifrice influence on fluoride releasing from glass-ionomercements. Methods: 27 specimens were constructed,divided into 3 groups: G1 (Maxion - R), G2 (KetacMolar 3M/ESPE) and G3 (Vittremer 3M/ESPE), and subdivided into 3 subgroups (n = 3): A (exposure to acidulated fluoride dentifrice pH 4.5 / 7h /37 ºC), B (exposure to non-acidulated fluoridedentifrice / 7h / 37 ºC), C (control - exposure toartificial saliva). After exposing, the specimens were immersed into artificial saliva and the fluoridere leasing measured at the following time periods:1 to 14 days. Data were subjected to analysis ofvariance using the Statistical Package for Social Science (SPSS). ANOVA test was applied with levelof significance of 5% to compare the means and the behavior of each material. Results: The exposure to acidulated dentifrice showed fluoride releasing means values (ppm/mm2) that varied from 1 and 14days : G1A (0.269 to 0.204); G2A (0.394 to 0.038);G3A (0.080 to 0.123). The relationship among the G1 subgroups at T1 and G3 subgroups at T1and T14 was statistically significant. Conclusion:The acidulated dentifrice positively influenced onfluoride releasing of hybrid GIC but not on that ofconventional GICs.