Shortening of etching time of the dentin in primary teeth restorations: a randomized clinical trial
Braz. oral res. (Online)
; 34: e081, 2020. tab, graf
Article
in English
| LILACS, BBO - Dentistry
| ID: biblio-1132665
Responsible library:
BR1.1
ABSTRACT
Abstract The aim of this study was to investigate the influence of shortening of etching time for dentin on the restoration survival after selective carious tissue removal in primary molars. This two-arm randomized clinical trial included sixty-two subjects (5-8 year-old) and 100 primary molars presenting moderate dentin carious lesions on occlusal surface. The sample was randomly assigned into groups previously to adhesive application (Adper Single Bond 2; 3M ESPE) etching time recommended by manufacturer (15 s) or reduced (7 s). Resin composite (Filtek Bulk Fill Posterior Restorative; 3M ESPE) was inserted in a single increment for all restorations. Restorations were evaluated at 1, 6, 12, and 18 months using FDI criteria. Survival estimates for restorations' longevity were evaluated with Kaplan-Meier method. Multivariate Cox regression analysis with shared frailty was used to assess the factors associated with failures (p < 0.05). The etching time did not influence the restorations' survival (HR 0.35 95%CI 0.11-1.12; p = 0.06). Mean estimated time of survival was 17.6 months (95%CI, 17.2-17.9). The survival rates at the 18-month follow-up were 75.7% and 91.4% (AFR 16.9% and 5.7%) when primary dentin was acid etched for 15 and 7 s, respectively (log-rank p = 0.06). In conclusion, the etching time for dentin did not influence the clinical behavior of adhesives restorations. However, there was a tendency for better clinical outcome when using etching time of 7 s.
Full text:
Available
Collection:
International databases
Database:
BBO - Dentistry
/
LILACS
Main subject:
Tooth, Deciduous
Type of study:
Controlled clinical trial
Language:
English
Journal:
Braz. oral res. (Online)
Journal subject:
Dentistry
Year:
2020
Document type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Universidade Federal de Santa Maria/BR
/
Universidade Federal do Rio Grande do Sul/BR
/
Universidade de São Paulo/BR