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To examine the effect of mold enclosure and chisel design on macro shear fatigue bond strengths of dental adhesive systems. The fatigue bond strength testing was conducted with two commercially available dental adhesive systems, (1) OptiBond eXTRa and (2) Scotchbond Universal, for bonding a resin composite (Filtek Supreme Ultra) to both enamel and dentin using a mold enclosure and a non-mold enclosure with a knife-edge and two sized notched-edge chisel assemblies for loading. As a loading reference for the fatigue testing, macro shear bond strengths of the adhesive systems to enamel and dentin were conducted using a mold enclosure and a knife-edge chisel assembly. The shear bond strengths with the mold enclosure using knife-edge chisel assembly did not exhibit a significant difference between the adhesive systems for either enamel or dentin. The fatigue bond strengths of bonded specimens demonstrated significant differences when comparing the mold enclosure and non-mold enclosure, but not between knife-edge and notched-edge chisel assemblies. The fatigue bond strengths of dental adhesive systems demonstrated significantly higher values when using mold-enclosed bonded specimens than a non-mold enclosure, regardless of type of chisel assembly. © 2022 Scandinavian Division of the International Association for Dental Research. Published by John Wiley & Sons Ltd.

Citation

Wayne W Barkmeier, Akimasa Tsujimoto, Mark A Latta, Toshiki Takamizawa, Scott M Radniecki, Franklin Garcia-Godoy. Effect of mold enclosure and chisel design on fatigue bond strength of dental adhesive systems. European journal of oral sciences. 2022 Jun;130(3):e12864

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PMID: 35452147

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