Journal article
Effect of dual-cure composite resin as restorative material on marginal adaptation of class 2 restorations.
- Bortolotto T Division of Cariology and Endodontology, School of Dentistry, University of Geneva, Switzerland. Tissiana.Bortolotto@unige.ch
- Melian K
- Krejci I
- 2013-06-13
Published in:
- Quintessence international (Berlin, Germany : 1985). - 2013
Composite Resins
Dental Caries
Dental Cements
Dental Marginal Adaptation
Dental Restoration, Permanent
Dental Stress Analysis
Humans
In Vitro Techniques
Microscopy, Electron, Scanning
Molar
Resin Cements
Surface Properties
English
OBJECTIVE
The present study attempted to find a simple direct adhesive restorative technique for the restoration of Class 2 cavities.
METHOD AND MATERIALS
A self-etch adhesive system with a dual-cured core buildup composite resin (paste 1 + paste 2) was evaluated in its ability to restore proximo-occlusal cavities with margins located on enamel and dentin. The groups were: A, cavity filling (cf) with paste 1 (light-curing component) by using a layering technique; B, cf by mixing both pastes, bulk insertion, and dual curing; and C, cf by mixing both pastes, bulk insertion, and chemical curing. Two control groups (D, negative, bulk; and E, positive, layering technique) were included by restoring cavities with a classic three-step etch-and-rinse adhesive and a universal restorative composite resin. SEM margin analysis was performed before and after thermomechanical loading in a chewing simulator.
RESULTS
Percentages (mean ± SD) of "continuous margins" were improved by applying the material in bulk and letting it self cure (54 ± 6) or dual cure (59 ± 9), and no significant differences were observed between these two groups and the positive control (44 ± 19).
CONCLUSION
The present study showed that the dual-cured composite resin tested has the potential to be used as bulk filling material for Class 2 restorations.
CLINICAL RELEVANCE
When used as filling materials, dual-cure composite resins placed in bulk can provide marginal adaptation similar to light-cured composites applied with a complex stratification technique.
The present study attempted to find a simple direct adhesive restorative technique for the restoration of Class 2 cavities.
METHOD AND MATERIALS
A self-etch adhesive system with a dual-cured core buildup composite resin (paste 1 + paste 2) was evaluated in its ability to restore proximo-occlusal cavities with margins located on enamel and dentin. The groups were: A, cavity filling (cf) with paste 1 (light-curing component) by using a layering technique; B, cf by mixing both pastes, bulk insertion, and dual curing; and C, cf by mixing both pastes, bulk insertion, and chemical curing. Two control groups (D, negative, bulk; and E, positive, layering technique) were included by restoring cavities with a classic three-step etch-and-rinse adhesive and a universal restorative composite resin. SEM margin analysis was performed before and after thermomechanical loading in a chewing simulator.
RESULTS
Percentages (mean ± SD) of "continuous margins" were improved by applying the material in bulk and letting it self cure (54 ± 6) or dual cure (59 ± 9), and no significant differences were observed between these two groups and the positive control (44 ± 19).
CONCLUSION
The present study showed that the dual-cured composite resin tested has the potential to be used as bulk filling material for Class 2 restorations.
CLINICAL RELEVANCE
When used as filling materials, dual-cure composite resins placed in bulk can provide marginal adaptation similar to light-cured composites applied with a complex stratification technique.
- Language
-
- English
- Identifiers
-
- DOI 10.3290/j.qi.a29751
- PMID 23757460
- Persistent URL
- https://folia.unifr.ch/global/documents/108650
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