The competition between enamel and dentin adhesion within a cavity: An in vitro evaluation of class V restorations

Autor: Wassila Doudou, Ivo Krejci, Tissiana Bortolotto, Karl Heinz Kunzelmann
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Molar
Time Factors
Scanning electron microscope
Dentistry
Polymerization
Resin Cements/chemistry
Dentin-Bonding Agents/chemistry
Acid Etching
Dental
Materials Testing
Dentin
Composite Resins/chemistry
Dental Restoration
Permanent
Enamel paint
Dental Marginal Adaptation
ddc:617.6
medicine.anatomical_structure
Marginal Analysis
visual_art
visual_art.visual_art_medium
Dental Enamel/ultrastructure
Methacrylates
Methacrylates/chemistry
Acid Etching
Dental/methods
Dentin/ultrastructure
Materials science
Surface Properties
Composite Resins
Dental Restoration
Permanent/classification
Dental Materials
stomatognathic system
medicine
Humans
Dental Enamel
General Dentistry
Dental Cavity Preparation/classification
business.industry
Dental Bonding
Water
Epoxy
Mechanical resistance
Resin Cements
stomatognathic diseases
Water/chemistry
Dentin-Bonding Agents
Dental Materials/chemistry
Microscopy
Electron
Scanning
Adhesive
Stress
Mechanical
Dental Cavity Preparation
business
Zdroj: Clinical Oral Investigations, Vol. 16, No 4 (2012) pp. 1125-35
ISSN: 1432-6981
Popis: To gain more insight into the consequences of curing contraction within the tooth cavity, we assessed the margin behavior of 12 contemporary restorative systems in class V restorations with margins located on enamel and dentin after mechanical loading and water storage. Mixed class V cavities were prepared on extracted human molars and restored using five etch and rinse and seven self-etch adhesive systems with their corresponding composites. Marginal adaptation was evaluated by using a computer-assisted quantitative marginal analysis in a scanning electron microscope (SEM) on epoxy replicas before, after thermal and mechanical stressing and after 1 year of water storage. The interactions of "testing conditions", "adhesive-composite combination" and "tooth substrate" with "marginal adaptation" were evaluated by two-way ANOVA. Fatigue, stress and storage conditions had significant effects on the marginal adaptation. Only two groups (Optibond FL and G Bond) presented equal percentages of marginal adaptation on enamel and dentin; in the other groups, the rate of degradation was product dependent. All materials tested showed a distinct behavior on enamel and dentin. In addition to mechanical resistance and long-term stability, differences within materials also exist in their ability to simultaneously bond to enamel and dentin.
Databáze: OpenAIRE
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