Evaluation of Oral Appliance Therapy Using a Novel Titration Method for Obstructive Sleep Apnea

Area of Science:

• Sleep Medicine
• Biomedical Engineering
• Medical Imaging

Background:

• Oral appliances (OAs) treat upper airway obstructions by advancing the mandible.
• Conventional OA fabrication relies on standard methods for determining mandibular position.
• Optimizing OA effectiveness is crucial for managing sleep-disordered breathing.

Purpose of the Study:

• To evaluate a novel oral appliance fabrication method utilizing MRI-based soft tissue assessment.
• To compare the effectiveness of MRI-guided OA fabrication against a standard fabrication method.

Main Methods:

• Patients undergoing polysomnography at diagnosis (T0) and follow-up (T1) were included.
• Two groups were compared: standard fabrication (S group) and MRI-guided fabrication (S-MRI group) using SomGauge.
• Mandibular position in the S-MRI group was determined via MRI soft tissue evaluation.

Main Results:

• No significant differences in baseline characteristics (age, BMI, AHI) or mandibular advancement between groups.
• The S-MRI group showed significantly higher apnea-hypopnea index (AHI) reduction rates (65.09%) compared to the S group (44.29%).
• Hypopnea index reduction rates were also significantly higher in the S-MRI group (62.97%) versus the S group (39.10%).

Conclusions:

• MRI-based mandibular positioning enhances oral appliance therapy success rates for sleep-disordered breathing.
• This novel fabrication method demonstrates clinical utility in improving airway patency.
• The findings support the integration of MRI soft tissue assessment in OA design for better patient outcomes.