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Accuracy of Gonial Angle Measurements Using Panoramic Imaging versus Lateral Cephalograms in Adults with Different
Nada E Tashkandi1, Najla Hamad Alnaqa2, Naif M Al-Saif3
1Preventative Department, Riyadh Elm University, Riyadh, Saudi Arabia.
Journal of Multidisciplinary Healthcare
|May 6, 2024
Summary
Panoramic radiographs offer a precise method for measuring gonial angles, accurately detecting differences across various mandibular divergence patterns in adult patients. This imaging technique shows promise in craniofacial assessments.
Area of Science:
- Dentistry
- Radiology
- Orthodontics
Background:
- The gonial angle is a key craniofacial parameter for assessing facial skeleton symmetry and vertical dimensions.
- Gonial angle measurement is typically performed using panoramic radiographs and lateral cephalograms.
- Lateral cephalograms present challenges in reliable gonial angle assessment due to image superimposition.
Purpose of the Study:
- To evaluate the precision of panoramic imaging in measuring gonial angles compared to lateral cephalograms.
- To assess gonial angle measurement accuracy across different mandibular divergence patterns using panoramic radiography.
Main Methods:
- Panoramic radiographs and lateral cephalograms from 448 adult patients (18-30 years) were analyzed.
- Gonial angles were measured using an AI-driven tool (WebCeph™) on lateral cephalograms and compared with panoramic measurements.
- Data were analyzed across different gender, malocclusion, and mandibular divergence groups.
Main Results:
- Statistically significant differences were found between gonial angle measurements from lateral cephalograms and panoramic radiographs (p=0.022).
- Panoramic radiographs revealed significant differences in gonial angle measurements among various mandibular divergence groups (p=0.004), including FMA (p=0.002) and Sn-GoMe.
Conclusions:
- While lateral cephalometry is the gold standard, panoramic radiography demonstrated superior accuracy in identifying differences related to mandibular divergence.
- Panoramic imaging provides a precise and effective tool for gonial angle assessment, particularly for differentiating between various facial growth patterns.
