Title
Pre-heating effect on micro-hardness and depth of cure for three bulk-fill composite resins: An in vitro study
Authors
Alakesh Singha1, Archan Dhanesha2,*, Sruthi Nair3, Ruchi Patel4, Subasish Behera5 & Soumyaranjan Nanda6
Affiliation
1Department of Conservative Dentistry & Endodontic, Private Practitioner at Alaka's Odontocare Dental clinic & Endodontic Centre , Agartala, Tripura, India; 2Department of Dentistry, AIIMS, Rajkot, Gujarat, India; 3Specialist Endodontist, Sai Ganesh Medical Centre, Rolla Sharja, UAE; 4Department of Prosthodontics Crown and Bridge, Karnavati School of Dentistry, Karnavati University, Gandhinagar, Gujarat, India; 5Department of Conservative Dentistry and Endodontics, Government Dental College and Hospital (SCB), Manglabag, Cuttack, Odisha, India; 6Department of Conservative Dentistry and Endodontics, Cuttack, Odisha, India; *Corresponding author
Alakesh Singha - E - mail: alakesh.singha2012@gmail.com
Archan Dhanesha - E - mail: archan.dhanesha.aa@gmail.com
Sruthi Nair - E - mail: sruthinair127@gmail.com
Ruchi Patel - E - mail: drruchibpatel@gmail.com
Subasish Behera - E - mail: dr.subasish@gmail.com
Soumyaranjan Nanda - E - mail: nandasoumya245@gmail.com
Article Type
Research Article
Date
Received September 1, 2024; Revised September 30, 2024; Accepted September 30, 2024, Published September 30, 2024
Abstract
This study aimed to evaluate the effect of preheating on the micro-hardness and depth of cure of three different bulk-fill composite resins: Filtek Bulk Fill (3M ESPE), Tetric EvoCeram Bulk Fill (Ivoclar Vivadent), and SDR (Dentsply Sirona). Three bulk-fill composite resins, Filtek Bulk Fill (3M ESPE), Tetric EvoCeram Bulk Fill (Ivoclar Vivadent), and SDR (Dentsply Sirona), were tested in this in vitro study. Each resin was divided into two groups: preheated and non-preheated. The preheating process was performed using a composite warmer at 68°C for 5 minutes. Micro-hardness was measured using a Vickers hardness tester, and the depth of cure was evaluated by measuring the hardness ratio at different depths (0.5 mm, 1 mm, and 2 mm). Pre-heating significantly increased the micro-hardness of all three bulk-fill composite resins (p < 0.05). For Filtek Bulk Fill, the micro-hardness value increased from 60 to 70 HV, for Tetric EvoCeram Bulk Fill from 55 to 65 HV, and for SDR from 58 to 68 HV. The depth of cure was also enhanced in the preheated groups. The hardness ratio at 2 mm depth was 0.85 for Filtek Bulk Fill, 0.80 for Tetric EvoCeram Bulk Fill, and 0.83 for SDR in the preheated groups, compared to 0.75, 0.70, and 0.72 in the non-preheated groups, respectively. Pre-heating bulk-fill composite resins improves their micro-hardness and depth of cure. This suggests that preheating could be beneficial in clinical settings to enhance the physical properties of composite restorations.
Keywords
Preheating, Bulk-fill composite resin, Filtek Bulk Fill, Tetric EvoCeram Bulk Fill, Micro-hardness & Depth of cure
Citation
Singha et al. Bioinformation 20(9): 1128-1131 (2024)
Edited by
Vine Mehta
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.
