Document Detail

Shear bond strength of a light-cured veneering composite to fiber-reinforced composite substrates.
MedLine Citation:
PMID:  18350946     Owner:  NLM     Status:  MEDLINE    
PURPOSE: The aim of this study was to compare the shear bond strength of a veneering composite to 2 differently treated fiber-reinforced composite (FRC) substrates and to a base metal alloy. MATERIALS AND METHODS: A veneering composite (SR Adoro) was bonded to the following substrates: (1) a nickel-chromium base metal alloy (control, group A), (2) an FRC substructure (Vectris) with a flat surface (group B), and (3) an FRC substructure (Vectris) with retentive rods 0.5 x 0.5 mm in cross section and 10 mm in length, positioned parallel to each other at a distance of 0.5 mm (group C). Thirty-nine specimens were fabricated and divided into 3 groups of equal size. All specimens were thermocycled for 5,000 cycles at 5 degrees C and 55 degrees C with dwell time of 30 seconds in each bath. Evaluation of shear bond strength was performed at a constant crosshead speed of 0.5 mm/min according to ISO 10477. RESULTS: The mean values for the shear bond strength were 19.29 MPa for the control group (group A), 16.66 MPa for group B, and 16.74 MPa for group C. Despite a tendency to higher bond strength of group A specimens, no statistically significant difference was recorded between the groups (P > .05). CONCLUSIONS: No statistically significant difference was found between the metal and FRC substructures. Retentive rods on the FRO substructure do not seem to increase the bond strength significantly.
Athina Antonopoulou; Andreas Hatzikyriakos; Triantafillos Papadopoulos; Pavlos Garefis
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  The International journal of prosthodontics     Volume:  21     ISSN:  0893-2174     ISO Abbreviation:  Int J Prosthodont     Publication Date:    2008 Jan-Feb
Date Detail:
Created Date:  2008-03-20     Completed Date:  2008-05-09     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8900938     Medline TA:  Int J Prosthodont     Country:  United States    
Other Details:
Languages:  eng     Pagination:  45-9     Citation Subset:  D    
Department of Fixed and Implant Prosthodontics,School of Dentistry, Aristotelian University of Thessaloniki, Greece.
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MeSH Terms
Chromium Alloys / chemistry
Composite Resins / chemistry*
Dental Alloys / chemistry
Dental Bonding* / instrumentation,  methods
Dental Veneers*
Glass / chemistry*
Materials Testing
Shear Strength
Surface Properties
Time Factors
Reg. No./Substance:
0/Chromium Alloys; 0/Composite Resins; 0/Dental Alloys; 0/fiberglass

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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