Assessment of bulk-fill of resins microhardness longitudinal
Braz. j. oral sci
;
23: e240398, 2024. tab
Article
in English
| LILACS, BBO
| ID: biblio-1553456
ABSTRACT
Aim:
This study aimed to assess the polymerization effectiveness of bulk-fill composite resins in longitudinal microhardness.Methods:
Blocks of bulk-fill composite resin with thicknesses of 6 mm were analyzed with Vickers microhardness. The resin blocks were divided into two groups (n=6) resin AURA and OPUS. The microhardness test was performed before (base and top) and after (longitudinal microhardness) sectioning the blocks at distances of 2 mm, 4 mm, and 6 mm from the top of the block. The mean microhardness values were tabulated and subjected to ANOVA followed by Tukey's test (p<0.05).Results:
The OPUS bulk-fill resin samples presented microhardness means of 55.9 kgf/mm2, 53.7 kgf/mm2, and 49.3 kgf/mm2, the AURA bulk-fill resin samples presented microhardness means of 57,02 kgf/mm2, 55,86 kgf/mm2 e 51,77 kgf/mm2 for the distances of 2 mm, 4 mm, and 6 mm, respectively. Tukey's statistical test showed a significant difference in microhardness values at different distances of 2 mm, 4 mm, and 6 mm (p<0.001) for each resin. Although there was a statistically significant difference within and between the groups assessed, all samples showed polymerization effectiveness when comparing the top and base of the block.Conclusion:
Polymerization was effective in different thicknesses (2 mm, 4 mm, and 6 mm) in both resins studied. The microhardness ratio was adequate when comparing the base and topSubject(s)
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Efficacy
/
Composite Resins
/
Polymerization
/
Hardness
Language:
English
Journal:
Braz. j. oral sci
Journal subject:
Dentistry
Year:
2024
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Federal University of Sergipe/BR
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