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Flowable composites as "filled adhesives:" a microleakage study.
- Source :
-
The journal of contemporary dental practice [J Contemp Dent Pract] 2004 Nov 15; Vol. 5 (4), pp. 32-41. Date of Electronic Publication: 2004 Nov 15. - Publication Year :
- 2004
-
Abstract
- Objective: The purpose of this in vitro study was to investigate the microleakage at dentin margins of a flowable resin composite associated with an adhesive, either light cured separately or co-cured, in Class V cavities.<br />Materials and Methods: Twenty four recently extracted human molars were prepared with standardized box-shaped Class V cavities of 3.0 mm (mesial-distal), 2.0 mm (occlusal-gingival), and 2.0 mm depth with margins located on enamel and dentin/cementum on the buccal or lingual surfaces. The cavities were randomly assigned into three groups (n=8): Group I - Single Bond + Filtek Z250 (control); Group II - Single Bond + Filtek Flow (light cured separately) + Filtek Z250; and Group III - Single Bond + Filtek Flow co-cured (light cured simultaneously) + Filtek Z250. After being immersed in tap water for 24 h, the specimens were thermocycled (1000x, 5 degrees -55 degrees C, 30 sec dwell time) and immersed in a 0.5% basic fuchsine solution for 24 h. The restorations were sectioned longitudinally and gingival margins were evaluated for microleakage using a 0-4 scale. Data were subjected to the Kruskal-Wallis test at p<0.05.<br />Results: A statistically significant difference at p = 0.0044 between Groups 1 and 3 and Groups 2 and 3 was observed. Although Group 2 performed slightly better than Group 1, no significant difference was observed.<br />Conclusion: The use of a flowable resin composite cured simultaneously with an adhesive yielded the worst results in this study. As no statistical differences were seen between Groups 1 and 2, the use of a flowable composite as a means of minimizing microleakage at dentin margins may be questioned.
- Subjects :
- Bisphenol A-Glycidyl Methacrylate radiation effects
Dental Leakage prevention & control
Dental Marginal Adaptation
Dentin-Bonding Agents radiation effects
Drug Combinations
Humans
Light
Molar
Phase Transition
Random Allocation
Statistics, Nonparametric
Adhesives radiation effects
Composite Resins radiation effects
Dental Leakage etiology
Dental Restoration, Permanent adverse effects
Dental Restoration, Permanent methods
Subjects
Details
- Language :
- English
- ISSN :
- 1526-3711
- Volume :
- 5
- Issue :
- 4
- Database :
- MEDLINE
- Journal :
- The journal of contemporary dental practice
- Publication Type :
- Academic Journal
- Accession number :
- 15558088