Comparison of oropharyngeal airway dimensional changes in patients with skeletal Class II and Class III malocclusions after orthognathic surgery and functional appliance treatment: A systematic review

Introductions: Radiographic image segmentation is a process that aims to distinguish the voxels and pixels within a defined area of interest from the background, which is vital for facilitating clinical diagnosis, treatment planning, intervention, and follow-up in the field of dentistry and medicine. Objectives: We aimed to provide an assessment of the efficacy and accuracy of segmentation methods in dentomaxillofacial imaging through a systematic review. Methods: PubMed and Scopus electronic databases were searched from January 1999 to January 2023. The keywords used for the search were combinations of the following terms for each database: Artificial intelligence, Segmentation, Image interpretation, Deep Learning, Convolutional neural networks, and Head and neck imaging. After the initial search, eligible studies were selected based on the inclusion criteria, and quality assessments were conducted by A Revised Tool for the Quality Assessment of Diagnostic Accuracy Studies (QUADAS-2). Results: Primary electronic database searches resulted in 2763 articles. Finally, a total of 54 records were considered suitable for this systematic review. Twenty-five (46%) used CBCT as a baseline imaging modality, 11 used MDCT (20%), 6 used panoramic (11%), 4 used micro-CT (7%), 3 used periapical (6%), 3 used MRI (6%), and 2 used ultrasonography (4%). Segmentation through automatic algorithms (convolutional neural networks (CNNs) and artificial neural networks (ANNs) mostly including U-net and MS-D net) was used in the majority of the studies. Conclusion: The systematic review of the current segmentation methods in dentomaxillofacial radiology shows interesting trends, with the rising popularity of deep learning methods over time. However, Continued efforts will be necessary to improve algorithms.

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Correlation between oral cavity volume and upper airway changes in skeletal Class III patients undergoing bimaxillary orthognathic surgery: a pilot cone-beam computed tomography study

Li,

Chen,

et al. 2024

The Angle Orthodontist

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Objectives To evaluate changes of the upper airway and oral cavity volumes in patients with skeletal Class III malocclusion undergoing bimaxillary orthognathic surgery, and to analyze the correlation between postoperative upper airway decrease and the amount of jaw movement and oral cavity volume reduction. Materials and Methods Thirty patients (16 males and 14 females) undergoing bimaxillary surgery were included. Three-dimensional reconstruction of the upper airway and oral cavity were performed using preoperative (T0) and postoperative (T1) (6 months) cone-beam computed tomography scans. Results The volume, sagittal area and minimum cross-sectional area of the upper airway were diminished (P < .001). The decrease in volume and minimum cross-sectional area in the oropharyngeal region of the upper airway were weakly correlated with B-point posterior movement (P < .05). Total oral cavity volume was decreased, with maxillary oral volume increasing and mandibular oral volume decreasing (P < .001). Upper airway decrease was highly correlated with total oral volume reduction and mandibular oral volume reduction, with the most significant correlation being with total oral volume reduction (P < .001). Conclusions Class III bimaxillary surgery reduced the volume, sagittal area, and minimum cross-sectional area of the upper airway as well as oral cavity volume. Upper airway changes were weakly correlated with anterior-posterior mandibular movement but significantly correlated with oral cavity volume changes. Thus, oral cavity volume reduction is a crucial factor of upper airway decrease in patients with skeletal Class III malocclusion undergoing bimaxillary orthognathic surgery.

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Comparison of oropharyngeal airway dimensional changes in patients with skeletal Class II and Class III malocclusions after orthognathic surgery and functional appliance treatment: A systematic review

Cited by 3 publications

References 57 publications

Exploring the relationship between the number of systematic reviews and quality of evidence: an orthognathic surgery-based study

Exploring the relationship between the number of systematic reviews and quality of evidence: an orthognathic surgery-based study

Assessment of Efficacy and Accuracy of Segmentation Methods in Dentomaxillofacial Imaging- A Systematic Review

Correlation between oral cavity volume and upper airway changes in skeletal Class III patients undergoing bimaxillary orthognathic surgery: a pilot cone-beam computed tomography study

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