journal article·2025-10-08Open access

Simplified Diagnosis of Mandibular Asymmetry in Panoramic Radiographs Through Digital Processing and Its Prospective Integration with Artificial Intelligence: A Pilot Study

Paulina Agurto-Sanhueza, Karla Roco, Pablo Navarro, Andrés Neyem, Nicolás I. Sumonte, Nicolás E. Ottone

Applied Sciences· Volume 15· Issue 19

Abstract

Background/Objectives: Mandibular asymmetry is a common morphological alteration in orthodontics and orthognathic surgery, generally diagnosed with panoramic radiographs despite their limitations. Automated processing systems offer a promising alternative for improving its detection and analysis. The aim of this study was to develop a pilot computational model to detect and measure mandibular asymmetry in the body and ramus by analyzing anatomical distances in digital panoramic radiographs of adults. Methods: This was a descriptive observational pilot study, carried out on 30 digital panoramic radiographs of young adult patients (15 men, 15 women). Three craniometric points (Condylion, Gonion and Gnathion) were used as references landmarks. An algorithm was implemented in Python® (v3.12) with OpenCV to extract anatomical coordinates and calculate Euclidean distances (Go-Gn, Co-Go) from pixels to millimeters. Data were statistically analyzed in SPSS (v23.0) using normality tests, paired t-tests, Wilcoxon tests, and Mann–Whitney U tests (p < 0.05). Results: No significant differences were observed in mandibular lengths by sex, with men having greater lengths in both the body (80.63 mm vs. 73.86 mm) and the ramus (55.82 mm vs. 49.15 mm). In addition, significant differences were found in total mandibular ramus measurements (p = 0.023). A classification of asymmetry by severity was proposed (mild: ≤3 mm, moderate: 3–6 mm, severe: >6 mm), with mild asymmetries being the most frequently found. The model showed reliable processing capacity. Conclusions: This pilot study shows the feasibility of using Python for automated measurement of mandibular asymmetry in panoramic radiographs and highlights its future potential for neural network integration and diagnostic-epidemiological use.
Source: crossref · Quality: baseline

Research context

OpenAlex topics: Dental Radiography and Imaging · Temporomandibular Joint Disorders · Forensic Anthropology and Bioarchaeology Studies

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Doctoral Program in Morphological Sciences, Universidad de La Frontera, Temuco 4780000, Chile

Escuela de Informática y Telecomunicaciones, Instituto Profesional Duoc UC, Santiago 7500550, Chile

Facultad de Ciencias de la Salud, Universidad Autónoma de Chile, Temuco 4920000, Chile

Department of Computer Science, School of Engineering, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile

National Center for Artificial Intelligence (CENIA), National Research and Development Agency (ANID), Santiago 8320000, Chile

Laboratory of Plastination and Anatomical Techniques, Universidad de La Frontera, Temuco 4780000, Chile

Center of Excellence in Morphological and Surgical Studies (CEMyQ), Universidad de La Frontera, Temuco 4780000, Chile

Adults Integral Dentistry Department, Center for Research in Dental Sciences (CICO), Faculty of Dentistry, Universidad de La Frontera, Temuco 4780000, Chile

Funding

Dirección de Investigación, Universidad de La Frontera

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