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Published on: January 28, 2020
Feasibility of occlusal plane in predicting the changes in anteroposterior mandibular position: a comprehensive
Bingran Du1, Kaichen Li2, Zhiling Shen3
1Department of Stomatology, Shunde Hospital, Southern Medical University (The First People's Hospital of Shunde, Foshan), Foshan, 528308, Guangdong, China.
BMC Oral Health
|January 8, 2025
Summary
The improved functional occlusal plane (IFOP) inclination, derived from 3D CBCT models, can predict anteroposterior mandibular position (APMP) changes. A steeper IFOP inclination indicates a more retrognathic mandibular posture.
Area of Science:
- Dentistry
- Orthodontics
- 3D Imaging
Background:
- Predicting anteroposterior mandibular position (APMP) changes is crucial in orthodontics.
- A comprehensive analysis of occlusal plane (OP) inclination for APMP prediction is lacking.
Purpose of the Study:
- To analyze the relationship between different OP inclinations and APMP metrics.
- To explore the feasibility of using OP inclination to predict APMP changes.
Main Methods:
- 115 three-dimensional (3D) models were reconstructed using deep learning-based cone-beam computed tomography (CBCT) segmentation.
- Accuracy of CBCT models was compared with intraoral scanning models.
- Seven OPs and three APMP metrics were identified and measured; their inclinations were analyzed for distinguishing skeletal patterns and correlating with APMP metrics.
Main Results:
- Deep learning-based models showed high accuracy (<0.300 mm deviation).
- The improved functional OP (IFOP) inclination demonstrated significant accuracy in distinguishing skeletal classes (AUC values ranging from 0.693 to 0.899).
- IFOP inclination showed strong correlations with APMP metrics (r = -0.557 to 0.731) and outperformed other OPs.
Conclusions:
- Deep learning-based 3D models from CBCT data are feasible for OP construction.
- IFOP inclination is a viable predictor for APMP changes.
- A steeper IFOP inclination is associated with a more retrognathic mandibular posture.
