Title

Marginal adaptation of zirconium dioxide crowns prepared with four different finish lines: An in vitro study

Authors

Aviraj Gill¹, Priyabrata Jena^1,*, Saumya Sharma¹, Sanjeev Singh¹, Avinash Kumar¹, Baby Jaman¹ & Pratik Surana²

Affiliation

¹Department of Prosthodontics and Crown and Bridge, Maitri College of Dentistry and Research Centre, Anjora, Durg, Chhattisgarh, India; ²Department of Pedodontics and Preventive Dentistry, Maitri College of Dentistry and Research Centre, Durg, Chhattisgarh, India; *Corresponding author

Email

Aviraj Gill - E-mail: gillaviraj001@gmail.com; Phone: +91 9827126999
Priyabrata Jena - E-mail: drpjena1988@gmail.com; Phone: +91 9039189410
Saumya Sharma -E-mail:doctorsaumya2011@gmail.com; Phone: +91 9755263345
Sanjeev Singh - E-mail:sanjeevsingh2124@gmail.com; Phone: +91 7389617333
Avinash Kumar - E-mail: dravinashprostho@gmail.com; Phone: +91 7978223163
Baby Jaman - E-mail: babyjaman872@gmail.com; Phone: +91 7389182987
Pratik Surana - E-mail: suranadrpratik@gmail.com; Phone: +91 8871310111

Article Type

Research Article

Date

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

Abstract

Poor marginal adaptation of zirconia crowns may lead to microleakage, secondary caries and reduced restoration longevity. Marginal integrity is therefore critical for the clinical success of CAD/CAM zirconia crowns. Therefore, it is of interest to evaluate the effect of four finish line designs-rounded shoulder, chamfer, bevelled shoulder, and sloping shoulder-on the marginal fit of zirconia crowns. The rounded shoulder showed superior marginal adaptation compared to chamfer, while bevelled shoulder showed no advantage over sloping shoulder. Rounded shoulder and chamfer finish lines may therefore be more favorable for CAD/CAM zirconia crowns

Keywords

Marginal integrity, finish line, zirconia crown

Citation

Gill et al. Bioinformation 22(3): 1569-1573 (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.