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Ahead of Print
ORIGINAL ARTICLES
Published online: 2020-01-07
Submitted: 2019-12-11
Accepted: 2020-01-02
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Age estimation for children and young adults by volumetric analysis of upper anterior teeth using CBCT data

Z. Yang, L. Fan, K. Kwon, J. Pan, C. Shen, J. Tao, F. Ji
DOI: 10.5603/FM.a2020.0004
·
Pubmed: 31930465

open access

Ahead of Print
ORIGINAL ARTICLES
Published online: 2020-01-07
Submitted: 2019-12-11
Accepted: 2020-01-02

Abstract

Background: The aim of this study was to investigate the association between chronological age and the PTR (pulp/tooth volume ratio) of specific teeth using CBCT enhanced with Materialise-Mimics Research software 21.0 in children and young adult population from Eastern China.

Materials and methods: CBCT scans of 230 patients (119 males, 111 females), aged 8.18- 19.92 years were analyzed by two well-trained examiners in this retrospective study. The intraclass correlation coefficient (ICC) value was calculated to test the intra- and inter-examiner agreement. The volumetric analysis of the pulp and calcified tissues was performed on the maxillary left central incisors and canines. The correlation and regression analyses were then performed.

Results: The Pearson correlation analysis showed a strong coefficient of correlation (r) for maxillary left canines (-0.81 for girls and -0.87 for boys) as compared to central incisors (-0.63 for girls and -0.70 for boys). Regarding performance, the canine model was more powerful than the central incisor model. The derived regression equation from maxillary left canines had high coefficients of determination (Age=21.979-105.42*ptr, R2=0.69).

Conclusions: Our study proved that the PTR value of canines had a negative correlation relationship with a subadult’s chronological age and volumetric analysis of CBCT scans using the software may become an efficient method to estimate the chronological age of children and young adults.

Abstract

Background: The aim of this study was to investigate the association between chronological age and the PTR (pulp/tooth volume ratio) of specific teeth using CBCT enhanced with Materialise-Mimics Research software 21.0 in children and young adult population from Eastern China.

Materials and methods: CBCT scans of 230 patients (119 males, 111 females), aged 8.18- 19.92 years were analyzed by two well-trained examiners in this retrospective study. The intraclass correlation coefficient (ICC) value was calculated to test the intra- and inter-examiner agreement. The volumetric analysis of the pulp and calcified tissues was performed on the maxillary left central incisors and canines. The correlation and regression analyses were then performed.

Results: The Pearson correlation analysis showed a strong coefficient of correlation (r) for maxillary left canines (-0.81 for girls and -0.87 for boys) as compared to central incisors (-0.63 for girls and -0.70 for boys). Regarding performance, the canine model was more powerful than the central incisor model. The derived regression equation from maxillary left canines had high coefficients of determination (Age=21.979-105.42*ptr, R2=0.69).

Conclusions: Our study proved that the PTR value of canines had a negative correlation relationship with a subadult’s chronological age and volumetric analysis of CBCT scans using the software may become an efficient method to estimate the chronological age of children and young adults.

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Keywords

dental age estimation, Mimics Software, Chinese children, CBCT, volumetric analysis

About this article
Title

Age estimation for children and young adults by volumetric analysis of upper anterior teeth using CBCT data

Journal

Folia Morphologica

Issue

Ahead of Print

Published online

2020-01-07

DOI

10.5603/FM.a2020.0004

Pubmed

31930465

Keywords

dental age estimation
Mimics Software
Chinese children
CBCT
volumetric analysis

Authors

Z. Yang
L. Fan
K. Kwon
J. Pan
C. Shen
J. Tao
F. Ji

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