Sleep apnoea: can an oral appliance replace CPAP?

How do the two devices keep the airway open?

If sleeping with a CPAP mask is uncomfortable, could you use a dental device instead? Some adults with obstructive sleep apnoea can discuss an oral appliance. It is not suitable for everyone, and buying and wearing one does not complete treatment.

In obstructive sleep apnoea, the upper airway repeatedly narrows or becomes blocked during sleep, affecting breathing. Continuous positive airway pressure, or CPAP, delivers pressurised air through a mask to help keep the airway open.

A common type of oral appliance advances the lower jaw to create more airway space. The “dental device” here is designed for sleep-related breathing treatment. Ordinary braces or a protective mouthguard cannot simply be treated as the same device.

The ongoing tasks differ too. CPAP needs a suitable mask and pressure settings. An oral appliance needs dental fitting and continued checks on its use and any tooth changes. Being smaller and having no mask does not remove the need for ongoing care.

When is an oral appliance worth discussing?

An oral appliance can be considered for some people with mild or moderate obstructive sleep apnoea. A care team may also assess it for some people with severe disease who cannot use CPAP. That does not mean a person with severe disease can replace existing treatment independently.

If mask discomfort is the reason for wanting a change, explain the specific problem first. Mask design, fitting, humidification and device settings can affect tolerance. Some problems may be addressed within the current treatment rather than requiring a different device. Pressure settings should be checked by the care team.

The type of sleep apnoea matters. A 2020 public sleep-medicine Q&A from Beijing Tsinghua Changgung Hospital says oral appliances are mainly used for mild or moderate obstructive disease and are unsuitable as sole treatment for mixed sleep apnoea. Two people having breathing pauses at night therefore cannot assume they need the same device.

Why does assessment in China involve more than fitting a device?

A February 2026 report from Xiangya Stomatological Hospital, Central South University, describes sleep-breathing screening in the orthodontic assessment of selected patients. Specialists interpret reports together with clinical examination, and those with signs of moderate or severe risk are referred under that hospital’s process. Dental assessment can contribute to sleep care, but screening does not by itself establish a diagnosis or choose treatment.

For an adult considering an oral appliance, a sleep specialist assesses the condition and treatment goals, while an experienced dentist handles fitting and dental follow-up. The hospital report also discusses facial and jaw development in children and adolescents; it cannot establish the same effects in adults or a nationwide service model.

Treatment aims to improve breathing during sleep, not merely to stop a partner hearing snoring. Effectiveness and tooth changes require follow-up assessment. Do not stop existing treatment simply because the device feels comfortable or snoring becomes quieter.

Useful questions include “What type of sleep apnoea do I have?”, “Why is this treatment recommended?” and “How will its effects be assessed?” The questions before agreeing to treatment provide other general prompts and can help you retain the hospital’s explanations.