Publication: Effect of cement film thickness on shear bond strengths of two resin cements.
Accepted Date
2014-01-02
Issued Date
2014-05
Resource Type
Language
eng
ISSN
0125-5614 (printed)
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Mahidol University
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Mahidol University
Bibliographic Citation
Urapepon S, Luesak W, Suchatlampong C. Effect of cement film thickness on shear bond strengths of two resin cements. M Dent J. 2014; 34(2): 122-8.
Suggested Citation
Somchai Urapepon, สมชาย อุรพีพล, Wutipong Luesak, Chatcharee Suchatlampong, ชัชรี สุชาติล้ําพงศ์ Effect of cement film thickness on shear bond strengths of two resin cements.. Urapepon S, Luesak W, Suchatlampong C. Effect of cement film thickness on shear bond strengths of two resin cements. M Dent J. 2014; 34(2): 122-8.. Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/1155
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Title
Effect of cement film thickness on shear bond strengths of two resin cements.
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Abstract
Objective: The purpose of this study was to determine the effect of cement
thickness on the shear bond strength of two commercial adhesive resin
cements, Panavia-F and Super-Bond C&B when used to bond nickel-chromium
alloy to bovine dentine.
Materials and methods: Ni-Cr alloy discs, Ø5x3 mm and bovine teeth (120
pairs) were bonded together by two different resin cements (Super Bond C&B
and Panavia F) at four different film thicknesses (50, 100, 150 and 200
micrometers). After bonding, they were stored in 37°C water for 24 h. Shear
bond test at a crosshead speed of 0.5mm/min was performed. The fracture
surfaces of the specimens were observed by scanning electron microscope.
Results: Panavia F showed the shear bond strength ranged from 4.02±1.44
MPa to 9.32±2.40 MPa, whereas Super Bond C&B showed a shear bond
strength ranging from 5.01±1.38 MPa to 7.10±2.70 MPa. Both cements showed
maximum shear bond strength to Ni-Cr alloy at 100 micrometers. In general,
Panavia F showed higher bond strength than Super Bond C&B. Both cement
thickness and cement type, and their interaction were found to have an
effect on the shear bond strength of nickel-chromium alloy to bovine dentine.
No significant differences were found when the film thickness was less than
150 micrometers for Panavia F (P>0.05) while those of Super Bond C&B were
not significantly different at any film thickness (P>0.05). When the thickness
of cement increased, more voids in the cement were found especially in
Super Bond C&B.
Conclusions: Within the limitations of this study, the shear bond strength
between 50 and 150 micrometers was not significantly affected by the
cement thickness.