Isra Medical Journal

Title:

Effect of Addition of Hydroxyapatite on Tensile Strength of Resin Modified Glass Ionomer Cement

Authors:

Hafiz Mahmood Azam, Zahid Iqbal

Published on:

2018-10-31

Journal Reference:

Volume 10 - Issue 5 Sep - Oct 2018

Pages:

267-271

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DOI:

OBJECTIVE: To determine the effect of incorporation of Hydroxyappatite on tensile strength of resin modified glass ionomer cement

STUDY DESIGN: In vitro comparative study

PLACE AND DURATION: Department of Science of Dental Materials Isra University Hyderabad and Pakistan Council of Scientific and Industrial Research laboratories (PCSIR) from 1^st July 2013 to 31^st January 2014).

METHODOLOGY: There were two groups in this study. Control group was consisting of Resin Modified Glassionomer (Vitremer) 3M™ ESPE™ and test group was consist of Resin modified glass ionomer cement with addition of Hydroxyappatite (sigma Alderich) at different ratios: 3%, 5%, 7%, 8% and 9% (by weight). Specimens for Tensile strength were prepared in stainless steel mold of 4 mm in height 3 mm width and total length of specimen was 74.54 mm. LED light source for 25 seconds was used for polymerization of all samples. Tensile strength tests were performed on “dumb bell” shaped specimen and the diametrical tensile strength were measured by the help of Universal Testing machine Instron.

RESULTS: The tensile strength of 3% hydroxyapatite + RMGIC was found to be 24.13 + 0.72 MPa, 5% hydroxyapatite + RMGIC 26.30 + 0.43 MPa, 7% hydroxyapatite + RMGIC 27.55 + 0.62 MPa, 8% hydroxyapatite + RMGIC 28.11 + 0.24 MPa and 9% hydroxyapatite + RMGIC 28.81+ 0.20 MPa. A significant effect of independent variable test groups and the control group on dependent variable tensile strength of control group was found by two way ANOVA statistical analysis, F (122.99 with 0 and 4 degrees of freedom. P-value = Sig= 0.001)

CONCLUSION:The tensile strength of resin modified glassionomer incorporated with hydroxyapatite with different percentages is statistically significant different as compare to the tensile strength of resin modified glassionomer.

KEYWORDS: Hydroxyappatite, Tensile Strength, Resin Modified, Glassionomer Cement, Universal Testing Machine, Effect

HOW TO CITE THIS:

Azam HM,Iqbal Z. Effect Of Addition Of Hydroxyapatite on Tensile Strength of Resin Modified Glass Ionomer Cement. Isra Med J. 2018; 10(5): 267-271.

This is an Open Access article distributed under the terms of the Creative Commons Attribution-Noncommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.