Title

Effect of thermally assisted light polymerization technique (TALP) on resin based composite

containing newer photo initiator systems - An in vitro study

Authors

Vankala Gautam¹, Srinidhi Vishnu Ballullaya¹, Dhana Prakash Gurram^2,*, B. Priyanka², Ramesh Penumaka³ & Saveri Katragadda⁴

Affiliation

¹Department of Conservative Dentistry and Endodontics, St Joseph Dental College, Duggirala, Eluru, Andhra Pradesh, India; ²Department of Conservative Dentistry and Endodontics, Drs Sudha & Nageswara Rao Siddhartha Institute of Dental Sciences ,Andhra Pradesh, India; ³Department of Prosthodontics & Crown and Bridge & implantology, Drs Sudha & Nageswara Rao Siddhartha Institute of Dental Sciences, Andhra Pradesh, India; ⁴Department of Orthodontics and Dentofacial Orthopedics, Drs Sudha & Nageswara Rao Siddhartha Institute of Dental Sciences, Andhra Pradesh, India; *Corresponding author

Email

Vankala Gautam - E-mail: vankala.gautam@gmail.com

Srinidhi Vishnu Ballullaya - E-mail: vbnidhi@gmail.com

Dhana Prakash Gurram - E-mail: drdhanaprakashendo@gmail.com

B Priyanka - E-mail: priyanka8487@gmail.com

Ramesh Penumaka - E-mail: ramesh51endo@gmail.com

Saveri Katragadda - E-mail: saveri.katragadda@gmail.com

Article Type

Research Article

Date

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

Abstract

Optimal polymerization of resin composites without harmful thermal effects on dentin and pulp remains a clinical challenge. Therefore, it is of interest to evaluate the effect of pre-heating to 60°C on microhardness, conversion, curing depth, photoinitiation and temperature changes in four composite systems. Microhardness, FTIR, UV–Vis spectrophotometry and customized thermal analysis were used for evaluation. Pre-heating significantly improved microhardness and depth of cure, while intradentinal temperature increased by only 0.77–1.43°C and conversion remained comparable in most groups. Thus, data shows the pre-heating resin composites to 60°C may enhance polymerization and mechanical performance without clinically significant thermal effects.

Keywords

Degree of conversion, depth of cure, intra dentinal temperature, intra pulpal temperature, UV-Vis spectrophotometer, vickers hardness number

Citation

Gautam et al. Bioinformation 22(7): 4041-4046 (2026)

Edited by

Hiroj Bagde  

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.