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 Table of Contents  
ORIGINAL STUDY COMPETITION
Year : 2018  |  Volume : 18  |  Issue : 5  |  Page : 18-19

OSC26: Characterization and physico-chemical evaluation of a novel glass ionomer nanozirconia-silica-hydroxyapatite hybrid material


Date of Web Publication31-Oct-2018

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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0972-4052.244617

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How to cite this article:
... OSC26: Characterization and physico-chemical evaluation of a novel glass ionomer nanozirconia-silica-hydroxyapatite hybrid material. J Indian Prosthodont Soc 2018;18, Suppl S1:18-9

How to cite this URL:
... OSC26: Characterization and physico-chemical evaluation of a novel glass ionomer nanozirconia-silica-hydroxyapatite hybrid material. J Indian Prosthodont Soc [serial online] 2018 [cited 2018 Nov 20];18, Suppl S1:18-9. Available from: http://www.j-ips.org/text.asp?2018/18/5/18/244617



Arbaz Sajjad, Wan Zaripah Wan Bakar, Ismail Ab Rahman, Dasmawati Mohamad, T.P. Kannan

Department of Prosthodontics and Biomaterials, School of Dental Sciences, Universiti Sains Malaysia, Kota Bharu, Malaysia.

Glass ionomer cement (GIC) is among popularly used material in prosthodontics for core build-up and cementation of prostheses. A novel GIC-nanozirconia- silica- hydroxyapatite (GIC-nanoZrO2-SiO2-HA) has been developed which has better hardness and aesthetics.

Aim: To characterize and evaluate the fluoride release and colour stability of a new GIC-nanoZrO2-SiO2-HA hybrid material.

Materials and Methods: The nanoZrO2-SiO2-HA was synthesized using modified sol-gel technique and the nanopowder was characterized using TEM and FTIR. Ten samples per group were prepared by adding 5% by weight of nanoZrO2-SiO2-HA powder into the conventional GIC (Fuji IX). The colour stability was measured with a spectrophotometer using CIE L*a*b* system, and the fluoride release was measured using an ISE meter, over a one-month period. The data was statistically analysed using repeated measures ANOVA.

Results: TEM micrographs confirmed that all particles were in the nanoscale range with spherical ZrO2 and SiO2 particles embedded in the voids between rod-shaped HA crystallites. FTIR confirmed the presence of functional groups corresponding to each element. The statistical analysis demonstrated that the ΔE values for GIC-nanoZrO2-SiO2-HA were lower than conventional GIC indicative of greater colour stability and fluoride release was significantly higher for all the time intervals (p<0.05).

Conclusion: The addition of nanoZrO2-SiO2-HA has improved the physico-chemical properties of GIC with greater colour stability and fluoride elusion making it a potentially stronger anticariogenic aesthetic dental material for the future.






 

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