International Journal of Scientific Research in Dental and Medical Sciences

International Journal of Scientific Research in Dental and Medical Sciences

Comparative Evaluation of Microhardness and Degree of Polymerization of Dual-cure Resin Cement on Luting Composite Resin Endocrowns of 5.5mm and 7.5mm Thicknesses: An in-vitro Study

Document Type : Original Article

Authors
Prakruthi Thippeswamy Nallikatte
Shony Mohan
Harsha Kumar Karunakaran
Ravichandran Rajagopal
Vivek Velayudhan Nair
Amal Shajahan
Department of Prosthodontics, Government Dental College Trivandrum, Kerala University of Health Sciences, Kerala, India
10.30485/ijsrdms.2025.490011.1621
Abstract
Background and aim: The aim of this in vitro study was to assess and compare the microhardness and degree of polymerization of dual-cure resin cement used for luting composite resin Endocrowns using the Vickers microhardness test and Fourier Transform Infrared (FTIR) spectroscopy.
Material and methods: The study comprises two test groups and one control group. The test groups comprised composite resin endocrowns of 5.5mm and 7.5mm thickness. The dual-cured resin cement was used to lute the endocrowns. As a control group, 2 mm-thick cured resin cement was used. The cured resin cement was subjected to testing using Vickers microhardness and FTIR spectroscopy.
Results: The mean microhardness across all groups was 7.4663, with an overall standard deviation of 0.30963 and a standard error of 0.05653. The ANOVA test results revealed a significant difference in microhardness values (F = 180.665, p < 0.001). The mean degree of polymerization across all groups was 7.8723, with an overall standard deviation of 0.35528 and a standard error of 0.06487. The ANOVA test results revealed a significant difference in the degree of polymerization between the groups (F = 144.873, p < 0.001).
Conclusions: The study's statistical analysis was evident through  ANOVA and post hoc Tukey's tests. The sufficient sample size for each group enhanced the statistical power and allowed for a more accurate variability assessment.
Keywords
Fourier Transform Infrared
Polymerization
Resin Cements

Subjects

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International Journal of Scientific Research in Dental and Medical Sciences
Volume 6, Issue 4
Autumn 2024
Pages 168-177

  • Receive Date 30 September 2024
  • Revise Date 10 November 2024
  • Accept Date 21 November 2024
  • Publish Date 26 November 2024