Publication: Effect of dentinal tubule orientation on the modulus of elasticity of resin-infiltrated demineralized dentin
Issued Date
2014-02-07
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ISSN
18811361
02874547
02874547
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2-s2.0-84893513557
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Mahidol University
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SCOPUS
Bibliographic Citation
Dental Materials Journal. Vol.33, No.1 (2014), 54-58
Suggested Citation
Pong Pongprueksa, Pisol Senawongse, Nataya Vongphan Effect of dentinal tubule orientation on the modulus of elasticity of resin-infiltrated demineralized dentin. Dental Materials Journal. Vol.33, No.1 (2014), 54-58. doi:10.4012/dmj.2013-199 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/33766
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Title
Effect of dentinal tubule orientation on the modulus of elasticity of resin-infiltrated demineralized dentin
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Abstract
The effect of tubule orientation of dentin on the elastic modulus of resin-infiltrated dentin was evaluated. Rectangular cylindrical-shaped dentin specimens with their long axis parallel to and perpendicular to dentinal tubules were prepared from extracted premolars. Twenty-five mineralized specimens of each orientation were evaluated. The remaining specimens were then demineralized. The demineralized specimens and the demineralized following by infiltration with one of these adhesives; Optibond Solo Plus, Single Bond 2 or Prime & Bond NT, from each orientation were evaluated (25 specimens per group). The tubular orientation only affected the elastic modulus of mineralized dentin. The highest elastic modulus was observed for the mineralized dentin when the tensile force was applied parallel to the direction of tubules. The elastic modulus of demineralized dentin was the lowest. The adhesive resins increased the elastic modulus of demineralized dentin, but the differences among the three were insignificant.