A dentist cannot diagnose sleep apnea, and an oral appliance is not a replacement for CPAP. Those two sentences matter more than anything else on this page.
Obstructive sleep apnea is a medical condition, diagnosed by a physician on the basis of a sleep study. What a dental practice contributes is narrower than most marketing suggests: we look inside your mouth more often than anyone else, we notice the signs, and where a physician has made a diagnosis and an appliance is appropriate, we make and manage it. It works alongside your physician, never instead of one.
If you have not been assessed, the first step is not an appliance — it is finding out whether you have sleep apnea at all.
Ask us about a screening conversation
What Obstructive Sleep Apnea Is
During sleep the muscles of the throat relax. In obstructive sleep apnea the airway narrows or closes repeatedly, breathing pauses, oxygen levels fall, and the brain rouses you just enough to reopen it — dozens of times an hour, and most people remember none of it. The daytime picture is unrefreshing sleep, morning headaches and sleepiness at the wrong moments. The night-time picture, reported by somebody else, is snoring, gasping and pauses in breathing. Snoring alone is not sleep apnea, and the only way to separate the two is a sleep study.
Why a Dentist Often Notices First
You may see your physician once a year and a hygienist twice. Several signs of a compromised airway sit inside the mouth, so they surface at a routine dental examination:
- Tooth wear from night-time grinding, which has a recognised association with sleep-disordered breathing. A night guard protects teeth and does nothing for the airway, so if breathing drives the grinding it is the wrong tool
- A scalloped border along the sides of the tongue
- A large tongue, a crowded throat or a high narrow palate
- Dry mouth on waking, from breathing through an open mouth all night
- Erosion inside the upper teeth suggesting reflux, which often travels with it
- Gum inflammation aggravated by mouth breathing, managed through gum disease care and hygiene visits
None of that diagnoses anything. It raises a question, and raising it is the useful part.
Screening, Then Referral
Screening is not diagnosis. If the signs are there we ask straightforward questions — daytime sleepiness, snoring, whether anyone has watched you stop breathing, blood pressure, neck size, weight. Validated questionnaires exist for this and take minutes. A high score does not mean you have apnea. It means the next step is worth taking, and that step is your physician, not our laboratory.
- We share what we found, with your consent, with your family physician.
- Your physician decides whether a sleep study is indicated and arranges it, at home or in a laboratory.
- A physician interprets the results and makes the diagnosis, including its severity.
- Treatment is decided medically. If an appliance suits you, the referral comes back to us.
We cannot skip a step, and be wary of any practice offering to. Making an appliance for an undiagnosed airway problem quietens the snoring while leaving genuine apnea untreated, and the apnea is the part with health consequences.
CPAP Comes First, and We Are Not Going to Pretend Otherwise
Continuous positive airway pressure is the first-line treatment for moderate to severe obstructive sleep apnea. It is more effective than an oral appliance at reducing apnea events and restoring oxygen levels, and it is what the evidence supports.
An oral appliance is a reasonable option for mild to moderate sleep apnea, for primary snoring without apnea, and for people with more severe disease who have genuinely tried CPAP and cannot tolerate it. That last group is real — a machine sitting unused on a bedside table treats nobody.
What we will not do is present an appliance as the easier or better choice to someone who has not tried CPAP. It is second-line for most people, and saying so costs us work.
What a Mandibular Advancement Device Is
Two custom trays, upper and lower, connected so the lower jaw is held slightly forward during sleep. Advancing the mandible brings the tongue base and soft tissues forward with it, opening the space at the back of the throat so collapse is less likely.
Making one involves an examination to check your teeth and jaw joints can take it, a scan of both arches, a bite record, fabrication and a fitting. Then titration: small adjustments over several weeks, guided by how you and your partner report you are sleeping. A follow-up sleep study often confirms it works, because feeling better is not proof the events stopped.
You need enough sound teeth to anchor it. Extensive crown work, teeth loosened by periodontal disease, decay needing fillings or full dentures can rule one out.
Side Effects, Stated Plainly
- Jaw muscle and joint soreness, particularly in the first few weeks
- Excessive salivation at first, or dry mouth, and tooth tenderness in the morning
- Bite changes over months and years. This is the significant one — holding the jaw forward night after night can alter how your teeth meet, and for some that becomes permanent
- Individual tooth movement, which is why we compare records over time
- Reduced effectiveness if your weight changes, since the airway changes too
Monitoring is not optional: regular reviews, your bite checked against baseline records, a willingness to stop if the changes outweigh the benefit. Correcting a bite change later can mean orthodontic treatment, a cost worth knowing before you start rather than after.
Why Untreated Sleep Apnea Matters
Factually rather than dramatically: untreated moderate to severe obstructive sleep apnea is associated with high blood pressure, cardiovascular disease, stroke, type 2 diabetes, atrial fibrillation, and a higher collision risk from daytime sleepiness. Treating it improves alertness and often blood pressure. That is a reason to be assessed properly, not a reason to buy an appliance without a diagnosis.
Cost and Coverage
An appliance for sleep apnea is usually claimed under extended health benefits rather than dental, because it treats a medical condition. Most plans require a physician’s diagnosis and the sleep study before paying anything, and many require preauthorisation.
We submit a predetermination so you know what your plan will pay before anything is made, and we can direct bill where your insurer permits. Public dental programs generally do not cover appliances of this kind, so if you are covered through the Canadian Dental Care Plan, check rather than assume. Ranges are on fees and payment, with a written estimate first.
Frequently Asked Questions
Can a dentist diagnose sleep apnea?
No. Diagnosis requires a sleep study ordered and interpreted by a physician. A dentist can screen, flag findings, refer you, and — once you have a diagnosis — make and manage an oral appliance.
Is an oral appliance as good as CPAP?
For moderate to severe sleep apnea, no — CPAP controls the condition better. An appliance is an option for mild to moderate apnea, for snoring, or for people who genuinely cannot tolerate CPAP.
Start With a Conversation
If you snore heavily, wake unrefreshed, or someone has told you that you stop breathing at night, mention it at your next visit. If you need a sleep study first, we will say so.
Book an appointment or get in touch. If you are new here, read what a first visit involves.