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Assessment of lower third molar space: A comparative radiographic study
Yasmina Aoun1, Bachar Husseini1, Ronald Younes1,2
1Craniofacial Research Laboratory, Faculty of Dental Medicine, Saint-Joseph University of Beirut, Beirut, Lebanon.
Dento Maxillo Facial Radiology
|April 25, 2022
Summary
Assessing lower third molar space with Cone Beam Computed Tomography (CBCT) reveals the novel 3D simulation technique offers more predictable results than conventional methods. This advanced imaging provides superior visualization for dental assessments.
Area of Science:
- Dentistry
- Radiology
- 3D Imaging
Background:
- Accurate assessment of lower third molar space is crucial for treatment planning.
- Conventional radiographic techniques may have limitations in fully evaluating this space.
Purpose of the Study:
- To compare the accuracy of lower third molar space assessment using four radiographic reconstructed Cone Beam Computed Tomography (CBCT) images.
- To evaluate a newly introduced three-dimensional (3D) simulation technique against established methods.
Main Methods:
- CBCT scans from 32 individuals (50 lower third molars) were analyzed.
- The ratio of necessary to available space was calculated for each radiographic technique.
- Statistical analysis included repeated-measure ANOVA and multiple comparison tests.
Main Results:
- The 3D simulation technique (0.807 ± 0.193) and multiplanar CBCT (0.789 ± 0.191) provided the highest ratios for lower third molar space.
- Cephalograms yielded the smallest ratio (0.611 ± 0.263).
- Intraclass correlation was strong (>0.90) for all techniques except cephalograms.
Conclusions:
- The choice of imaging technique significantly impacts the assessment of lower third molar space.
- The 3D simulation technique offers a novel, predictable approach for exploring lower third molar crowns in multiple dimensions.
