Getting The Best Fit
Finding the Right Mask and Fit

A mask that doesn’t fit well can reduce the effectiveness of your treatment. It can also cause you to continually re-adjust the mask or over-tighten the headgear. This may reduce your comfort level and how long your mask can work effectively.

Your mask should fit lightly on your face, and you should only feel a minimal amount of pressure. Headgear should be secure but not too tight. If your mask has a forehead arm or adjustment feature, adjust that first. Adjust straps to minimize air leaks, especially into the eyes. Your mask should be the smallest size that fits, without pinching your nostrils.

Avoid over-tightening

A tight fit is not necessary for effective therapy. Adjusting the mask too tightly is not only uncomfortable, but it creates folds in the material, which creates a path for leaks. If you experience leaking, try loosening the mask. In general, air should leak a minimal amount between your face and the mask. However, a small amount of air will leak out from the mask where the exhalation ports are located. This is normal.

Tips for your fitting

Therapists are trained to properly fit masks, however, your facial features change significantly during sleep. Ideally, your mask should be fitted while you are in a sleeping position and with air blowing at the prescribed pressure through the tubing and mask. If you use a full-face mask and wear dentures, remember that if your mask was fitted with your dentures in, your mask may not fit properly if worn without your dentures.