The purpose of this study were to examine the effect of 4-META/MMA-TBB resin containing calcium chloride dihydrate (CaCl2
) on dentin remineralization and its mechanical properties. Different percentages of CaCl2
(5%, 10%, and 30%) were added to 4-META/MMA-TBB resin. The Ca2+
released from CaCl2
bound to the phosphoprotein formed hydroxyapatite crystals to initiate dentin remineralization in 5%, 10% and 30% CaCl2
groups in vitro dentin mineralization system. Mineral induction time decreased with increasing of CaCl2
concentration in the resin. Vickers hardness and bending strength of 5% CaCl2
group were significantly higher than other groups. The results of elasticity analysis for the control, 5% and 10% CaCl2
groups showed no significant difference, and the viscosity analysis showed no significant difference between 4-META/MMA-TBB resin with up to 10% CaCl2
and the control.
The 4-META/MMA-TBB resin with 5% CaCl2
showed dentin remineralization activity with good mechanical properties.
Key words: 4-META/MMA-TBB resin, CaCl2, dentin remineralization, mechanical properties, bio-active material
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