Comparison of Degree of Conversion of Packable and Hybrid Composites by Fourier Transform Infrared Spectroscopy

Davari, Abdolrahim and Kashfi, Maryam and MirseifiNejadNaeeni, Rahelehsadat (2012) Comparison of Degree of Conversion of Packable and Hybrid Composites by Fourier Transform Infrared Spectroscopy. Journal of Mashhad Dental School, 36 (1). pp. 45-52.

[img]
Preview
Text
JMDS_Volume 36_Issue 1_Pages 45-52.pdf

Download (213kB) | Preview
Official URL: http://jmds.mums.ac.ir/article_835.html

Abstract

Introduction: Clinical performance of light cured resin composites is related to their degree of polymerization. The purpose of this study was to compare the degree of conversion of packable and hybrid composites by FTIR (Fourier Transform Infrared Spectroscopy). Materials &amp; Methods: In this experimental study, 40 composite disks were prepared intwo groups from Z250 and P60 composites. Each group was divided into four subgroups (2mm thickness cured with QTH unit, 2mm thickness cured with LED unit, 5mm thickness cured with QTH unit, and 5mm thickness cured with LED unit). Then samples were evaluated by FTIR to determine the degree of conversion (DC). Data were analyzed by Kolmogorov-Smirnov and three way ANOVA. Results: There was not a significant difference among the DC of the materials tested. LED significantly increased the degree of conversion of materials tested (P<0.001). DC values were significantly greater in 2mm diameter samples vs 5mm ones (P<0.001). Conclusion: The use of incremental technique in deep cavities restored with these composites is suggested. Also using LED is advised for curing composites because of a better result.

Item Type: Article
Subjects: WU Dentistry. Oral surgery
Divisions: Journals > Journal of Mashhad Dental School
Depositing User: jmds jmds
Date Deposited: 21 Sep 2017 16:34
Last Modified: 21 Sep 2017 16:34
URI: http://eprints.mums.ac.ir/id/eprint/2402

Actions (login required)

View Item View Item