Title
Assessment of thermocycling effect on surface roughness and color stability in nanoceramic hybrid restorative materials
Authors
Malik Mahmud Iqbal Hossain1,*, Bushra Irum1, Syed Yasir Qadiri1 & Aasima Ishaq2
Affiliation
1Department of Restorative Dentistry, College of Dentistry, Najran University, Saudi Arabia; 2Department of Endodontist, Government Dental College and Hospital, Srinagar, Kashmir, Jammu & Kashmir, India; *Corresponding author
Malik Mahmud Iqbal Hossain - E-mail: mmhussain@nu.edu.sa
Bushra Irum - E-mail: bihabib@nu.edu.sa
Syed Yasir Qadiri - E-mail: syqadiri@nu.edu.sa
Aasima Ishaq - E-mail: ishaqaasima@gmail.com
Article Type
Research Article
Date
Received August 1, 2026; Revised August 31, 2026; Accepted August 31, 2026, Published August 31, 2026
Abstract
Thermal stress can adversely affect the surface integrity and colour stability of dental restorative materials, compromising their long term clinical performance. Therefore, it is of interest to evaluate the effect of 10,000 thermocycles on the surface roughness and colour stability of three nanoceramic hybrid restorative materials compared with a conventional nanohybrid composite using atomic force microscopy and CIELAB spectrophotometric analysis. After thermocycling, nanoceramic hybrids showed significantly lower surface roughness (Ra: 0.18–0.24 µm) and lower colour change (ΔE: 1.82–2.14) than the conventional nanohybrid composite (Ra: 0.41 µm; p < 0.001). Nanoceramic hybrids may therefore provide improved long-term aesthetic and clinical performance in restorative dentistry. Thus, data shows the resistance of nanoceramic hybrid materials to thermally induced surface degradation and colour alteration.
Keywords
Surface roughness (Ra), colour stability, restorative materials
Citation
Hossain et al. Bioinformation 22(8): 4811-4816 (2026)
Edited by
Rashmi Laddha
ISSN
0973-2063
Publisher
License
This is an Open Access article which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. This is distributed under the terms of the Creative Commons Attribution License.
