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| ORIGINAL RESEARCH |
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| Year : 2007 |
Volume
: 18 | Issue : 4 | Page
: 173-176 |
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Degree of conversion and residual stress of preheated and room-temperature composites
N Prasanna, Y Pallavi Reddy, S Kavitha, L Lakshmi Narayanan
Department of Conservative, Dentistry and Endodontics, College of Dental Surgery, Saveetha University, Chennai, India
Correspondence Address:
N Prasanna
Department of Conservative, Dentistry and Endodontics, College of Dental Surgery, Saveetha University, Chennai
India
 Source of Support: None, Conflict of Interest: None  | Check |
DOI: 10.4103/0970-9290.35827
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The aim of this study was to determine the degree of conversion and residual stress of resin composite preheated to different temperatures and to compare it to room-temperature composite. The composite resin was preheated to 40ºC, 50ºC, and 60°C and packed into brass rings and light-cured. The degree of conversion and residual stress were analysed using Fourier transform infra-red spectroscopy and X-ray diffraction, respectively. The results obtained were tabulated and statistically analyzed using Kruskal-Wallis test and Tukey's honestly significantly different test. The results showed significant increase in the degree of conversion and residual stress with increase in preheating temperature. |
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