Journal article
Marginal adaptation of class II cavities restored with bulk-fill composites.
- Campos EA UNESP - Univ Estadual Paulista, Araraquara School of Dentistry, Department of Restorative Dentistry, Rua Humaita 1680, 14801-903 Araraquara, SP, Brazil. Electronic address: edson.campos@foar.unesp.br.
- Ardu S Division of Cariology & Endodontology, Dental School, University of Geneva, Rue Barthélemy-Menn 19, 1205 Geneva, Switzerland.
- Lefever D Division of Cariology & Endodontology, Dental School, University of Geneva, Rue Barthélemy-Menn 19, 1205 Geneva, Switzerland.
- Jassé FF UNESP - Univ Estadual Paulista, Araraquara School of Dentistry, Department of Restorative Dentistry, Rua Humaita 1680, 14801-903 Araraquara, SP, Brazil.
- Bortolotto T Division of Cariology & Endodontology, Dental School, University of Geneva, Rue Barthélemy-Menn 19, 1205 Geneva, Switzerland.
- Krejci I Division of Cariology & Endodontology, Dental School, University of Geneva, Rue Barthélemy-Menn 19, 1205 Geneva, Switzerland.
- 2014-02-25
Published in:
- Journal of dentistry. - 2014
Bulk-fill
Composites
Marginal adaptation
Bite Force
Composite Resins
Dental Cavity Preparation
Dental Enamel
Dental Marginal Adaptation
Dental Materials
Dental Restoration, Permanent
Humans
Materials Testing
Microscopy, Electron, Scanning
Random Allocation
Replica Techniques
Resin Cements
Stress, Mechanical
Surface Properties
Temperature
English
OBJECTIVES
To determine the marginal adaptation of bulk-fill composites in class II MO cavities.
METHODS
Standardized class II MO cavities with bevelled enamel margins were prepared in 40 extracted human molars. The teeth were randomly assigned to one of the five experimental groups (n=8). The teeth were restored with two horizontal increments of composite (4mm and 2mm thickness). The experimental groups were (1st/2nd increment): Gr. A - Venus Bulk-Fill/Venus Diamond; Gr. B - Tetric EvoCeram BulkFill/Tetric EvoCeram; Gr. C - Surefil SDR/Ceram-X; Gr. D - SonicFill; Gr. E - Ceram-X/Ceram-X (control). After finishing procedures, impressions were made using a polyvinyl siloxane and epoxy resin replicas were obtained. Thermo-mechanical stressing was carried out 24h after the restorative procedure. All specimens were submitted to 240,000 occlusal loading and simultaneous 600 thermal cycles in water at 5°C and 50°C. After loading, a new set of epoxy resin replicas was obtained. Scanning electron microscopy was carried out at 200× magnification. Results for the marginal adaptation were expressed as percentages of continuity relative to the exposed interface and analyzed by ANOVA and Duncan post hoc test (p<0.05).
RESULTS
In enamel, no significant differences were detected before and after thermo-mechanical loading between groups. In dentine, the worst results were observed in Gr.
A CONCLUSION
By applying simple layering techniques, bulk-fill materials do not allow better marginal adaptation than a standard composite.
CLINICAL SIGNIFICANCE
A new class of resin-base composite (bulk-fill) was recently launched on the market. The bulk-fill composites exhibited adequate marginal adaptation and similar to the results of the standard composite.
To determine the marginal adaptation of bulk-fill composites in class II MO cavities.
METHODS
Standardized class II MO cavities with bevelled enamel margins were prepared in 40 extracted human molars. The teeth were randomly assigned to one of the five experimental groups (n=8). The teeth were restored with two horizontal increments of composite (4mm and 2mm thickness). The experimental groups were (1st/2nd increment): Gr. A - Venus Bulk-Fill/Venus Diamond; Gr. B - Tetric EvoCeram BulkFill/Tetric EvoCeram; Gr. C - Surefil SDR/Ceram-X; Gr. D - SonicFill; Gr. E - Ceram-X/Ceram-X (control). After finishing procedures, impressions were made using a polyvinyl siloxane and epoxy resin replicas were obtained. Thermo-mechanical stressing was carried out 24h after the restorative procedure. All specimens were submitted to 240,000 occlusal loading and simultaneous 600 thermal cycles in water at 5°C and 50°C. After loading, a new set of epoxy resin replicas was obtained. Scanning electron microscopy was carried out at 200× magnification. Results for the marginal adaptation were expressed as percentages of continuity relative to the exposed interface and analyzed by ANOVA and Duncan post hoc test (p<0.05).
RESULTS
In enamel, no significant differences were detected before and after thermo-mechanical loading between groups. In dentine, the worst results were observed in Gr.
A CONCLUSION
By applying simple layering techniques, bulk-fill materials do not allow better marginal adaptation than a standard composite.
CLINICAL SIGNIFICANCE
A new class of resin-base composite (bulk-fill) was recently launched on the market. The bulk-fill composites exhibited adequate marginal adaptation and similar to the results of the standard composite.
- Language
-
- English
- Open access status
- closed
- Identifiers
-
- DOI 10.1016/j.jdent.2014.02.007
- PMID 24561041
- Persistent URL
- https://sonar.ch/global/documents/206019
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