An 18-month clinical evaluation of prolonged polymerization of a universal adhesive in non-carious cervical lesions: A double-blind randomized clinical trial

Viviane Hass, Thalita P. Matos, Sibelli O. Parreiras, Anna Luiza Szesz, Jullian J. de Souza, Mario F. Gutiérrez, Alessandra Reis, Alessandro D. Loguercio*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Objective: This study aimed to evaluate the effect of prolonging polymerization time on the 18 months clinical performance of a universal adhesive system used as etch-and-rinse (ER) and self-etch (SE). Methods: 140 restorations were randomly placed in 35 subjects according to the following groups: ER10 (light-curing for 10 s); ER40 (light-curing for 40 s); SE10 (light-curing for 10 s) and; SE40 (light-curing for 40 s/1200 mW/cm2). A resin composite was placed incrementally. The restorations were evaluated at baseline and after 18 months by using the FDI criteria. The following outcomes were evaluated: marginal staining, marginal adaptation, spontaneous post-operative sensitivity and recurrence of caries. The differences among the groups were calculated using Friedman repeated measures analysis of variance rank (α = 0.05). Results: After 18 months the retention/fracture rates were 88.9% (95%CI 74.1–95.6%) for ER10, 94.3% (95%CI 91.4–98.5%) for ER40, 77.2% (95%CI 60.1–87.9) for SE10 and 97.2% (95%CI 85.5–99.9%) for SE40. A significant difference was detected in the retention rate when SE10 was compared to the SE40 (p = 0.01). Also, ER40 showed a significant improvement of the marginal adaptation when compared to ER10 (p = 0.01). Significance: This is the first study that demonstrates an improvement in the clinical performance of universal adhesive systems in non-carious cervical lesions when prolonged light-cured was applied.

Original languageEnglish
JournalDental Materials
DOIs
StateAccepted/In press - 2021

Bibliographical note

Funding Information:
This study was partially supported by the National Council for Scientific and Technological Development (CNPq) under grants 303332/2017–4 and 308286/2019–7 and Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - Brasil (CAPES) - Finance Code 001. The authors are grateful for the technical support of the interdisciplinary laboratory CLABMU of State University of Ponta Grossa.

Funding Information:
This study was partially supported by the National Council for Scientific and Technological Development (CNPq) under grants 303332/2017?4 and 308286/2019?7 and Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - Brasil (CAPES) - Finance Code 001. The authors are grateful for the technical support of the interdisciplinary laboratory CLABMU of State University of Ponta Grossa.

Publisher Copyright:
© 2021 Elsevier Inc.

Keywords

  • Clinical trial
  • Non-carious cervical lesion
  • Polymerization time
  • Universal adhesive system

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