Degree of conversion of a flowable composite light-activated through ceramics of different shades and thicknesses
Braz. j. oral sci
;
14(3): 230-233, July-Sept. 2015. tab
Article
in English
| LILACS, BBO
| ID: lil-770530
ABSTRACT
Abstract The cementation of thin ceramic veneers employing fluid light-activated resin-based materials is a common procedure in the dental practice. Aim:
To evaluate the influence of ceramic thickness and shade on the degree of conversion (DC) of a flowable light-activated material.Methods:
flowable resin composite (Tetric N-Flow - shade A1) was light-activated through ceramic discs of two shades (IPS Classic - A1 and A3) in three thicknesses (0.5, 0.7 and 1.0 mm). For control, the resin composite was light-activated without ceramic interposition. DC was evaluated by FTIR (n=5). Data were analyzed by one-way ANOVA and Dunnett's T3 test (α=0.05).Results:
Statistically significant differences between groups were observed (p<0.001). Control group (without the interposition of ceramic) showed the highest mean for DC (71.9± 1.7). Considering the interposed ceramic disc groups, the highest DC values were obtained when 0.5 and 0.7 mm A1 ceramics were used (64.6±1.2 and 64.4 5.0, respectively) and the lowest DC values were obtained for 0.7 and 1 mm A3 ceramics (61.74±0.9 and 62.0±1.9, respectively).Conclusions:
No flowable resin composite group with interposing ceramics reached a DC similar to the control group.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Ceramics
/
Composite Resins
/
Dental Materials
/
Polymerization
Language:
English
Journal:
Braz. j. oral sci
Journal subject:
Dentistry
Year:
2015
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Universidade Positivo/BR
/
Universidade de São Paulo/BR
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