Title

Effect of crown–root ratio in endo-perio treated teeth restored with prosthodontic crowns

Authors

Suruchi Sisodia¹, Ruchi patel^1,*, Kashish Bhawar¹, Deepak Kumar², Gatha Mohanty³ & Bhoomi Shah⁴

Affiliation

¹Department of Conservative Dentistry and Endodontics, Modern Dental College and Research Centre, Indore, Madhya Pradesh, India; ²Department of Periodontology and Oral Implantology, Dasmesh Institute of Research And Dental Sciences, Faridkot, Punjab, India; ³Department of Periodontics & Oral Implantology, Institute of Dental Sciences, Siksha 'O' Anusandhan University, Deemed to be University, Bhubaneswar, Odisha, India; ⁴Department of Dentistry, College of dental science and research center, Ahmedabad, Gujarat, India; *Corresponding author

Email

Suruchi Sisodia - E-mail: sisodiasuruchi@gmail.com
Ruchi Patel - E-mail: ruchi766@gmail.com
Kashish Bhawar - E-mail: kashbhawar@gmail.com
Deepak Kumar - E-mail: dgirdhar2@gmail.com
Gatha Mohanty - E-mail: gathamohanty@soa.ac.in
Bhoomi Shah - E-mail: brshah2104@gmail.com

Article Type

Research Article

Date

Received February 1, 2026; Revised February 28, 2026; Accepted February 28, 2026, Published February 28, 2026

Abstract

The crown-root ratio (CRR) plays a crucial role in determining the biomechanical stability and long-term prognosis of endo-perio treated teeth restored with prosthodontic crowns. Therefore, it is of interest to assess the influence of CRR on the clinical performance and survival of such teeth in a sample of 60 patients aged 25-65 years. Based on radiographic CRR, teeth were categorized into three groups: favourable (≤1:1), moderate (1:1-1.5:1) and unfavourable (>1.5:1). All patients received standardized endodontic, periodontal and prosthodontic treatment and were evaluated over a 12-month period for probing depth, attachment level, marginal bone changes and crown survival. Teeth with favourable CRR showed minimal bone loss (0.2 mm) and a 100% survival rate, whereas those with unfavourable ratios demonstrated increased bone loss (0.9 mm) and reduced survival (75%) (p < 0.05). Thus, we show that prognosis declines progressively as CRR becomes less favourable, highlighting the importance of radiographic CRR assessment in treatment planning for enhancing the long-term success of prosthodontically restored endo-perio treated teeth.

Keywords

Crown–root ratio, endo-perio lesion, prosthodontic crown, tooth survival, bone loss

Citation

Sisodia et al. Bioinformation 22(2): 625-629 (2026)

Edited by

Rashmi Laddha

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.