Title

Evaluation of microhardness and color stability in PMMA and BIS-acryl as provisional restorative materials: A clinical study

Authors

Nivedita Sinha¹, Urvashi Kukreja², Sandeep Kalra^1,*, Nidhi Mangtani Kalra¹, Swati Kashyap¹ & Sonali Chugh¹

Affiliation

¹Department of Prosthodontics, MMCDSR, Mullana, Haryana, India; ²Department of Prosthodontics, Kukreja Dental Clinic, Ambala, Haryana, India; *Corresponding author

Email

Nivedita Sinha - E-mail: niveditasinha1403@gmail.com
Urvashi Kukreja - E-mail: urvashiKukreja0633@gmail.com
Sandeep Kalra - E-mail: dent.kalrasandeep@gmail.com
Nidhi Mangtani Kalra - E-mail: nidhimangtani@gmail.com
Swati Kashya - E-mail: swatikashyap664@gmail.com
Sonali Chugh - E-mail: sonalichugh79@gmail.com

Article Type

Research Article

Date

Received August 1, 2026; Revised August 31, 2026; Accepted August 31, 2026, Published August 31, 2026

Abstract

Selecting provisional materials when esthetics and short-term mechanical stability are priorities remains a tedious task for clinicians. Therefore, it is of interest to compare the microhardness and colour stability of four common provisional materials (DPI, Trulon, Protemp and Cooltemp). Eighty specimens of PMMA and bis-acryl were fabricated each. Results showed that Protemp had the best overall performance among the tested materials. Thus, turmeric is a stronger colourant than coffee and Cooltemp showed the highest ΔE values.

Keywords

Polymethyl methacrylate (PMMA), BIS-acryl, microhardness, color stability, coffee, turmeric

Citation

Sinha et al. Bioinformation 22(8): 4823-4826 (2026)

Edited by

P Kangueane

ISSN

0973-2063

Publisher

Biomedical Informatics

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.