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Effect of MTAD, Qmix 2 in 1 and Sodium Hypochlorite on Modulus of Elasticity and Flexural Strength of Dentin

Anurag Aggarwal, Navjot Singh Mann, Kiran Garg, Shubhpreet Kaur, Deepak Bala


Aim The aim of the present study was to evaluate and compare the effect of MTAD, Qmix 2 in 1 and sodium hypochlorite on flexural strength and elastic modulus of dentin.

Materials and Methods In this study, 40 freshly extracted human molars were selected and cut into plano-parallel dentin bars of dimensions of 1 × 7 mm. Then, the samples were randomly divided into four groups; one control i.e. saline group and three test
groups i.e. 3% NaOCl, 10% MTAD and Qmix 2 in 1. The samples were stored in irrigants for 2 h followed by rinsing with distilled water and solution was changed every 15 min to prevent saturation by reaction products. At the completion of treatment, the bars were tested for modulus of elasticity and flexural strength using three-point bending test in Universal Testing Machine at a cross-head speed of 1 mm/min.

Results There was no significant difference in flexural strength and modulus of elasticity between the dentin bars exposed to MTAD, NaOCl and Qmix when applied according to the clinical protocol. But there was significant difference between control group and experimental groups.

Conclusion When irrigants used as prescribed for clinical use do not affect the physical properties of the dentin.


MTAD, QMix 2 in 1, sodium hypochlorite, endodontic irrigants

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