Geometric morphometric analysis of mandibular morphology for age classification in Indonesian adolescents and adults

Q1 Medicine

Journal of oral biology and craniofacial research Pub Date : 2025-09-15 DOI:10.1016/j.jobcr.2025.09.011

Lusia Dinda Puspa Larasati , Arofi Kurniawan , An'nisaa Chusida , Beta Novia Rizky , Maria Istiqomah Marini , Queen Oceannia Arisa Putri , Aspalilah Alias , Rabiah Al-Adawiyah Rahmat , Anand Marya

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引用次数: 0

Abstract

Introduction

Accurate age estimation plays a crucial role in medicolegal investigations, particularly in determining whether an individual has reached the age of majority for criminal responsibility, which is legally defined as 18 years in Indonesia. Geometric morphometric (GM) analysis of the mandible enables the evaluation of shape variability in two-dimensional (2D) data with potential applications in categorizing individual ages. Purpose: This study aimed to evaluate the applicability of geometric morphometric (GM) analysis of mandibular morphology on panoramic radiographs for classifying individuals as adolescents or adults.

Methods

300 digital panoramic radiographs were obtained from Airlangga University Dental Hospital in Surabaya and divided into adolescent (15.0–17.9 years) and adult (18.0–21.0 years) age groups. Each sample was assigned 27 anatomical landmarks and analyzed using MorphoJ software with generalized Procrustes analysis (GPA) and principal component analysis (PCA), while statistical evaluation included Procrustes analysis of variance (ANOVA) and discriminant function analysis (DFA).

Results

GM analysis revealed statistically significant differences in mandibular morphology between adolescents and adults. However, Procrustes ANOVA did not show significant differences in mandibular size between the age groups. Variable mandibular morphology patterns were identified at the incisor point, mental foramen, gonion, and mandibular notch. The geometric morphometric method successfully identified the mandibular morphologies specific to each group, achieving 67 % and 65 % accuracy for the adult and adolescent groups, respectively.

Conclusion

These findings underscore the potential of GM analysis of mandibular morphology for classifying individuals as adolescents or adults.

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印度尼西亚青少年和成人下颌骨年龄分类的几何形态计量学分析

准确的年龄估计在法医调查中起着至关重要的作用，特别是在确定个人是否达到承担刑事责任的成年年龄方面，印度尼西亚的法定年龄为18岁。下颌骨的几何形态计量学（GM）分析能够在二维（2D）数据中评估形状变异性，在分类个体年龄方面具有潜在的应用。目的：本研究的目的是评估几何形态测量（GM）分析下颌形态在全景x线片上的适用性，以区分青少年或成人个体。方法从泗水Airlangga大学牙科医院获得300张数字全景x线片，分为青少年（15.0 ~ 17.9岁）和成人（18.0 ~ 21.0岁）两组。每个样本分配27个解剖标志，使用MorphoJ软件采用广义Procrustes分析（GPA）和主成分分析（PCA）进行分析，统计评价采用Procrustes方差分析（ANOVA）和判别函数分析（DFA）。结果gm分析显示，青少年与成人下颌形态差异有统计学意义。然而，Procrustes方差分析并没有显示年龄组之间下颌大小的显著差异。在切牙点、颏孔、阴囊和下颌切迹处确定了不同的下颌形态模式。几何形态测量法成功地识别了每一组特定的下颌形态，成人组和青少年组的准确率分别达到67%和65%。结论这些发现强调了下颌形态基因分析在区分青少年和成人个体方面的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of oral biology and craniofacial research Medicine-Otorhinolaryngology

CiteScore

4.90

自引率

0.00%

发文量

133

审稿时长

167 days

期刊介绍： Journal of Oral Biology and Craniofacial Research (JOBCR)is the official journal of the Craniofacial Research Foundation (CRF). The journal aims to provide a common platform for both clinical and translational research and to promote interdisciplinary sciences in craniofacial region. JOBCR publishes content that includes diseases, injuries and defects in the head, neck, face, jaws and the hard and soft tissues of the mouth and jaws and face region; diagnosis and medical management of diseases specific to the orofacial tissues and of oral manifestations of systemic diseases; studies on identifying populations at risk of oral disease or in need of specific care, and comparing regional, environmental, social, and access similarities and differences in dental care between populations; diseases of the mouth and related structures like salivary glands, temporomandibular joints, facial muscles and perioral skin; biomedical engineering, tissue engineering and stem cells. The journal publishes reviews, commentaries, peer-reviewed original research articles, short communication, and case reports.