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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Impact of light-curing time and aging on dentin bond strength of methacrylate- and silorane-based restorative systems

Full text
Author(s):
Anderson Catelan [1] ; Giulliana Panfiglio Soares [2] ; Ana Karina Bedran-Russo [3] ; Débora Alves Nunes Leite Lima [4] ; Giselle Maria Marchi [5] ; Flávio Henrique Baggio Aguiar [6]
Total Authors: 6
Affiliation:
[1] Universidade Estadual de Campinas. Piracicaba Dental School. Department of Restorative Dentistry - Brasil
[2] Universidade Estadual de Campinas. Piracicaba Dental School. Department of Restorative Dentistry - Brasil
[3] University of Illinois at Chicago. College of Dentistry. Department of Restorative Dentistry - Estados Unidos
[4] Universidade Estadual de Campinas. Piracicaba Dental School. Department of Restorative Dentistry - Brasil
[5] Universidade Estadual de Campinas. Piracicaba Dental School. Department of Restorative Dentistry - Brasil
[6] Universidade Estadual de Campinas. Piracicaba Dental School. Department of Restorative Dentistry - Brasil
Total Affiliations: 6
Document type: Journal article
Source: Braz. J. Oral Sci.; v. 13, n. 3, p. 213-218, 2014-09-00.
Abstract

AIM: To evaluate the impact of different light-curing times on dentin microtensile bond strength of two restorative systems after 24 h and 6 months of water storage. METHODS: Standardized Class II preparations were performed in 56 freshly-extracted human molars (n = 7), restored with methacrylate- or silorane-based restorative systems, and light-cured using a light-emitting diode at 1390 mW/cm2 by the recommended manufacturers' time or double this time. After storage for 24 h at 37 oC, the teeth were sectioned to yield a series of 0.8-mm thick slices. Each slab was trimmed into an hourglass shape of approximately 0.64 mm2 area at the gingival dentin-resin interface. Specimens were tested using universal testing machine at crosshead speed of 0.5 mm/min until failure, after 24 h and 6 months of storage. Data were statistically analyzed by three-way ANOVA and Tukey's test (α = 0.05). RESULTS: The highest bond strength values were recorded for the groups restored with methacrylate system (p<0.001) as well as for extended light-curing time (p = 0.0034). There was no statistically significant difference between 24 h and 6 months storage on bond strength (p>0.05). CONCLUSIONS: Bond strength was influenced by the material and light-curing time, but the 6-month storage did not affect the bond strength of restorations. (AU)

FAPESP's process: 10/15076-4 - Influence of energy density on the physical properties and bond strength of two restorative systems
Grantee:Flávio Henrique Baggio Aguiar
Support Opportunities: Regular Research Grants
FAPESP's process: 10/05666-9 - Influence of energy density on the physical properties and bond strength of two restorative systems
Grantee:Anderson Catelan
Support Opportunities: Scholarships in Brazil - Doctorate