Four-year clinical prospective follow-up of resin composite restoration after selective caries removal using Er:YAG laser

Author(s)

Valerio, Rodrigo Alexandre ^[1] ; Galo, Rodrigo ^[2] ; Galafassi, Daniel ^[3] ; Milori Corona, Silmara Aparecida ^[4] ; Borsatto, Maria Cristina ^[1]

Affiliation

^[1] Univ Sao Paulo, Ribeirao Preto Sch Dent, Clin Pediat Dent Dept, Cafe Ave, BR-14040904 Ribeirao Preto, SP - Brazil

^[2] Univ Fed Vales Jequitinhonha & Mucuri, Dept Dent, Rodovia MGT 367, Km 583, 5000 Alto Jacuba, BR-39100000 Diamantina, MG - Brazil

^[3] Merid Coll IMED, Sch Dent, Dept Restorat Dent, Senador Pinheiro 304, BR-99070220 Passo Fundo, RS - Brazil

^[4] Univ Sao Paulo, Ribeirao Preto Sch Dent, Restorat Dent Dept, Cafe Ave, BR-14040904 Ribeirao Preto, SP - Brazil

• Document type: Journal article
• Source: CLINICAL ORAL INVESTIGATIONS; v. 24, n. 7 NOV 2019.
• Web of Science Citations: 0

Abstract

Objectives The aim of this study was to longitudinally evaluate, after a 4-year period, the clinical longevity of composite resin restoration compared to the baseline, after selective caries removal in permanent molars using Er:YAG laser or bur preparation with biomodification of dentin with the use of chlorhexidine. Methods Selective caries removal was performed on 80 teeth of 20 individuals who each had at least four active carious lesions. These lesions, located on occlusal surfaces of permanent molar counterparts, were removed using (i) Er:YAG laser biomodified with chlorhexidine, (ii) Er:YAG laser and application of deionized water, (iii) bur preparation biomodified with chlorhexidine, and (iv) bur preparation and application of deionized water. At the end of 4 years, 64 of the 80 restorations were evaluated in 16 individuals (n = 16). The restorations were evaluated, both clinically and photographically, using scanning electron microscopy (SEM) and pulp vitality analysis. The experimental data were statistically evaluated by kappa, Fisher's, and chi-square tests, with a significance level of 5%. The Kaplan-Meier test and the Cox regression analysis were used to evaluate the survival of the restorations. Results After 4 years of follow-up, there was a statistically significant difference in marginal discoloration criteria for all of the groups evaluated. For marginal adaptation criteria, there was a statistically significant difference for the Er:YAG laser group biomodified with chlorhexine (p = 0.050). For clinical and radiographic evaluation of pulp vitality, there were no statistically significant differences among the groups (p = 0.806). Conclusion Er:YAG laser can be used for selective caries removal, regardless of dentin biomodification with chlorhexidine or application of deionized water, once it produced promising results in composite resin restorations after 4 years of follow-up, according to the criteria evaluated. The selective caries removal using Er:YAG laser or bur and the biomodification of dentin with the use of chlorhexidine did not influence the survival of composite resin restorations after the 4-year follow-up period. (AU)

• FAPESP's process: 12/06910-6 - CLINICAL EVALUATION OF COMPOSITE RESTORATIONS IN ER:YAG LASER PREPARATION RE-WETTING WITH CHLORHEXIDINE
• Grantee: Daniel Galafassi
• Support Opportunities: Scholarships in Brazil - Post-Doctoral