Imaging Science in Dentistry

Korean Academy of Oral and Maxillofacial Radiology (대한영상치의학회)
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Dental age estimation in Indonesian adults: An investigation of the maxillary canine pulp-to-tooth volume ratio using cone-beam computed tomography

  • Khamila Gayatri Anjani (Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Universitas Padjadjaran) ;
  • Rizky Merdietio Boedi (Centre of Forensic and Legal Medicine and Dentistry, University of Dundee) ;
  • Belly Sam (Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Universitas Padjadjaran) ;
  • Fahmi Oscandar (Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Universitas Padjadjaran)
  • Received : 2023.05.19
  • Accepted : 2023.07.01
  • Published : 2023.09.30
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Abstract

Purpose: This study was performed to develop a linear regression model using the pulp-to-tooth volume ratio (PTVR) ratio of the maxillary canine, assessed through cone-beam computed tomography (CBCT) images, to predict chronological age (CA) in Indonesian adults. Materials and Methods: A sample of 99 maxillary canines was collected from patients between 20 and 49.99 years old. These samples were obtained from CBCT scans taken at the Universitas Padjadjaran Dental Hospital in Indonesia between 2018 and 2022. Pulp volume (PV) and tooth volume (TV) were measured using ITK-SNAP, while PTVR was calculated from the PV/TV ratio. Using RStudio, a linear regression was performed to predict CA using PTVR. Additionally, correlation and observer agreement were assessed. Results: The PTVR method demonstrated excellent reproducibility, and a significant correlation was found between the PTVR of the maxillary canine and CA(r= -0.74, P<0.01). The linear regression analysis showed an R2 of 0.58, a root mean square error of 5.85, and a mean absolute error of 4.31. Conclusion: Linear regression using the PTVR can be effectively applied to predict CA in Indonesian adults between 20 and 49.99 years of age. As models of this type can be population-specific, recalibration for each population is encouraged. Additionally, future research should explore the use of other teeth, such as molars.

Keywords

Acknowledgement

The authors would like to thank the oral and maxillofacial radiology and forensic odontology staff of the Faculty of Dentistry, Universitas Padjadjaran, Indonesia and the Centre of Forensic and Legal Medicine and Dentistry, University of Dundee, Scotland for their support in completing this research through inter-university collaboration.

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