OSA is a condition where airway obstruction during sleep causes breathing interruptions, and CPAP therapy is the standard treatment. However, discomfort and air leakage from poorly fitting masks are common issues that reduce CPAP adherence.
A study investigates the use of customised CPAP masks, designed using 3D facial scanning and 3D printing, to improve the fit and comfort for individuals with obstructive sleep apnoea (OSA). With several companies currently offering this service. It deserved a closer look.
Six healthy adult volunteers participated in the study, testing both commercial CPAP masks and custom-built CPAP masks tailored to their facial features using 3D scanning. The study evaluated mask performance at three CPAP pressure levels (4, 8, and 12 cmH₂O) and three mask tightness levels (loose, appropriate, and tight). Key measurements included mask air leak rates and participants’ comfort rankings for each mask.
The primary aim was to compare the effectiveness of the customized masks against the commercial masks in terms of reducing air leakage and improving comfort, which could potentially enhance CPAP adherence. The results were analysed using statistical methods to identify significant differences between the masks.
While customised masks showed similar results to commercial masks in terms of mask leak and comfort, their performance varied between individuals due to differences in facial geometry. The customized masks did not consistently reduce leakage or improve comfort for all subjects, although they performed well at appropriate tightness settings without triggering “high leak” alarms. The key limitations included the small, healthy sample size and testing only in an upright position.
Overall, the study found that mask leak increased with higher CPAP pressures and decreased with tighter masks. Comfort rankings were subjective and not always linked to leak rates, suggesting other factors influenced comfort. Customized masks may be particularly useful for individuals with craniofacial abnormalities who struggle with commercial masks. Yet further research in such populations is recommended to explore the potential benefits of custom CPAP masks.
https://pmc.ncbi.nlm.nih.gov/articles/PMC7861025/#abstract1
