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KMID : 0362420130510010027
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Journal of Korean Academy of Prosthodontics
2013 Volume.51 No. 1 p.27 ~ p.32
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Shear bond strength of a self-adhesive resin cement to resin-coated dentin
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Hong Jee-Youn
Park Cheol-Woo
Heo Jeong-Uk
Bang Min-Ki
Ryu Jae-Jun
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Abstract
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PURPOSE: The aims of this study were to evaluate the effect of a resin coating on the shear bond strength of indirect composite restoration bonded to dentin with a self adhesive resin cement and to compare the shear bond strength with that of a conventional resin cement.
MATERIALS AND METHODS: The occlusal enamels of thirty six extracted noncarious human molars were removed until the dentin flat surfaces of the teeth were exposed. Then, they were divided into 3 groups. The dentin surfaces of group 1 and 3 were left without any conditioning, while the dentin surfaces of group 2 were resin-coated with Clearfil SE bond and a flowable resin composite, Metafil Flo. After all specimens were temporized for 24 hours, indirect composite resin blocks fabricated by Tescera were bonded to dentins by Unicem for group 1 and 2, and by Panavia F for group 3. After 48 hours of water storage, shear bond strengths were measured. The data was analyzed with one-way analysis of variance and multiple comparison test (Tukey method).
RESULTS: The shear bond strengths of Unicem applied to resin coated dentin surfaces were significantly higher than those of Unicem and Panavia F used to uncoated dentin surfaces (P<.0001).
CONCLUSION: Application of a resin coating to the dentin surface significantly improved the shear bonding strength of a self adhesive resin cement in indirect restoration.
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KEYWORD
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Resin cement, Resin coating, Shear bond strength, Indirect composite resin restoration
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