Title

CBCT-guided risk analysis for labial cortical plate perforation in virtual immediate implant placement of the anterior mandible

Authors

R. Chitra¹, Debanti Giri^2,*, Debabrata Biswas¹, Kritika Rajan¹, Ishan Roy Choudhury¹, Rima Biswas³ & Dhaval Niranjan Mehta⁴

Affiliation

¹Department of Prosthodontics and Crown & Bridge, Dr. R Ahmed Dental College and Hospital, Kolkata, West Bengal, India; ²Department of Oral Medicine and Radiology, Dr. R Ahmed Dental College and Hospital, Kolkata, West Bengal, India; ³Department of Oral Medicine and Radiology, MM College of Dental Sciences and Research, MM Deemed to be University, Mullana, Ambala, Haryana, India; ⁴Department of Oral Medicine and Radiology, Narsinhbhai Patel Dental College and Hospital, Visnagar, Gujarat, India; *Corresponding author

Email

R. Chitra - E-mail: chitra0314@gmail.com
Debanti Giri - E-mail: drdebantigiri@gmail.com
Debabrata Biswas - E-mail: biswasdrdebabrata@gmail.com
Kritika Rajan - E-mail: kritikarajan91@gmail.com
Ishan Roy Choudhury - E-mail: ishanr3@gmail.com
Rima Biswas - E-mail: biswasrima008@gmail.com
Dhaval Niranjan Mehta - E-mail: drdhaval80@gmail.com

Article Type

Research Article

Date

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

Abstract

Immediate anterior mandibular implant placement after extraction risks labial bone perforation (LBP), yet CBCT-based anatomical predictors remain insufficiently quantified for pre-operative risk assessment. Therefore, it is of interest to analyze the 100 subjects (300 sites), evaluating sagittal root position, dentoalveolar phenotype, concavity depth/angle, torque and deep bone thickness (DBT) at 0/5/10 mm via virtual implant simulation. LBP occurred in 19.0% (57/300 sites), with perforation sites showing reduced concavity angle (138.75±8.17° versus 145.11±8.49°; P<0.0001) and DBT at 0 mm (7.00±1.45 vs 8.73±1.66 mm; P<0.0001). Multivariable regression identified concavity angle (OR=0.879), torque (OR=1.064), crestal DBT (OR=0.512) and concavity depth (OR=0.641) as independent LBP predictors (all P<0.01). Thus, data shows that CBCT virtual planning is essential for identifying high-risk morphology, enabling perforation prevention through precise implant angulation and site selection.

Keywords

Alveolar bone, cone-beam computed tomography (CBCT), dental implants, mandible, risk assessment, tooth socket

Citation

Chitra et al. Bioinformation 22(8): 4997-5001 (2026)

Edited by

Vini Mehta

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.