Title

Fracture resistance of five interim crown materials: An in vitro study

Authors

Hemant Gadge¹,*, Aayushi Jadhav², Rik Chatterjee³, Sonal Jain⁴, Dara Hancy Sunaina⁵, Mayur Sinha⁶ & Suganthi Ranganathan⁷

Affiliation

¹Department of Prosthodontics, Sri Aurobindo College of Dentistry, Sri Aurobindo University, Indore, India; ²BDS, Private Practitioner, 2082-D Sudama Nagar, Indore, India; ³Department of Prosthodontics, Sri Aurobindo College of Dentistry, Sri Aurobindo University, Indore, India; ⁴Department of Prosthodontics and Crown and Bridge, Madha Dental College and Hospital, India; ⁵Department of Prosthodontics, KIMS Dental College and Hospital, Amalapuram, India; ⁶Department of Prosthodontics, Shree Bankey Bihari Dental College and Research Center, India; ⁷Department of Prosthodontics, Madha Dental College and Hospitals, Chennai, India; *Corresponding author

Email

Hemant Gadge - E-mail: drhemantgadge@gmail.com
Aayushi Jadhav - E-mail: aayushi.jadhav9103@gmail.com
Rik Chatterjee - E-mail: rikbijaychatterjee@gmail.com
Sonal Jain - E-mail: drsonaljain24@gmail.com
Dara Hancy Sunaina - E-mail: sunaina.dara@gmail.com
Mayur Sinha - E-mail: sinhamayur2@gmail.com
Suganthi Ranganathan - E-mail: saisuga.30@gmail.com

Article Type

Research Article

Date

Received September 1, 2026; Revised September 30, 2026; Accepted September 30, 2026, Published September 30, 2026
 

Abstract

Interim crowns require adequate fracture resistance to withstand functional masticatory loads during provisional treatment. Therefore, it is of interest to compare the five provisional materials using 25 standardized DMLS dies under compressive loading. Ultimate force, break force and break distance were measured and analyzed using one-way ANOVA and Kruskal-Wallis tests (α=0.05). Heat-cure PMMA showed the highest fracture resistance, whereas light-cure resin showed the lowest values (P<0.05). Thus, heat-cure PMMA is recommended for long-term provisionalization, while bis-acryl resins are suitable alternatives and light-cure resin should be avoided in stress-bearing posterior areas.

Keywords

Interim crown, fracture resistance, polymethyl methacrylate (PMMA), bis-acryl, provisional restoration, in vitro, computer-aided design and computer-aided manufacturing (CAD/CAM)

Citation

Gadge et al. Bioinformation 22(9): 6004-6007 (2026)

Edited by

Ruby Singh

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.