Oral appliance therapy: who it works for and who it doesn't

A custom oral appliance holds the lower jaw forward at night. The joint 2015 AASM/AADSM clinical practice guideline says sleep physicians should prescribe one for adults with obstructive sleep apnea who cannot tolerate CPAP or who prefer a different therapy. The same document found CPAP better at lowering the apnea-hypopnea index and improving oxygen. Custom, titratable devices beat boil-and-bite. In 2019 the dental academy published a separate position that payers should reimburse oral appliances as first-line therapy, and another paper in the same issue arguing for coverage after CPAP intolerance. Those are not the same claim. A physician, not a dentist, has to diagnose primary snoring before anyone treats “just snoring” with a device.

What is oral appliance therapy, exactly?

The 2015 guideline defines an oral appliance as a device meant to protrude and stabilize the mandible so the airway stays more open during sleep. A custom appliance is fabricated from impressions or digital models of that patient’s teeth. It is not a prefabricated tray you drop in hot water. Non-custom “boil-and-bite” devices are the drugstore cousins. Tongue-retaining devices are a different design; the 2015 review found insufficient evidence to judge them for adult OSA.

When the guideline talks about the therapy that has evidence, it is talking about a custom, titratable mandibular appliance, fitted and followed by a qualified dentist, prescribed after a sleep physician has made a diagnosis. Titratable means the advancement can be adjusted over weeks rather than locked at one guess. Follow-up sleep testing is how you find out whether the quiet snore is also a treated AHI.

What does the 2015 joint guideline actually recommend?

Ramar and colleagues, writing for both academies, gave a STANDARD recommendation that sleep physicians prescribe oral appliances, rather than no therapy, for adult OSA patients who are intolerant of CPAP or prefer alternate therapy. Patient preference is supposed to be considered before the prescription is written. That is the clinical sentence this practice uses.

The evidence review is equally plain, and less popular in dental ads. In their meta-analyses, CPAP was superior to oral appliances in reducing AHI, arousal index, and oxygen desaturation index, and in improving oxygen saturation. “Therefore,” they wrote, CPAP “should still generally be the first-line option for treating OSA.” For moderate to severe disease, the odds of hitting target AHI were greater with CPAP. Quality of life with custom titratable appliances was not inferior to CPAP in the data they had, which is why preference still matters: a machine you will not wear loses to a device you will, even if the tracing on a perfect night favors the machine.

When an appliance is used, they suggested a qualified dentist choose a custom, titratable device over non-custom gear. They suggested dentist follow-up for bite change, tooth movement, and jaw-joint symptoms, physician follow-up with repeat testing to confirm efficacy, and periodic visits with both. Those are GUIDELINE-level suggestions in their table, not optional niceties. An appliance that silences the bedroom and leaves an AHI of 32 is a failed treatment with better public relations.

What the 2015 CPG does not say: that oral appliances are equivalent first-line therapy to CPAP for every adult with OSA, or that insurers must pay for a device before anyone tries PAP. If you need the longer version of that distinction, the practice’s oral appliance therapy page is the clinical summary. This article is about who is a candidate, who is not, and why two 2019 dental papers keep getting flattened into one slogan.

What did AADSM say in 2019 that the 2015 guideline did not?

Two special articles appeared in the Journal of Dental Sleep Medicine in 2019. They are position papers about reimbursement. They are not a replacement AASM clinical practice guideline.

Le, Rodgers, and Postol wrote that it is AADSM’s position that oral appliance therapy “should be reimbursed as a first-line therapy for the treatment of obstructive sleep apnea.” Their argument is preference and adherence: if patients like the device more, they may use it more, and delaying it until after a mandatory CPAP failure delays care. They cite the 2015 joint guideline’s language that OAT should be considered if the patient does not wish to use CPAP, then go further on the payer sequence than that guideline did.

Rohatgi, Mogell, and Schwartz, in the other article in the same issue, argued a narrower ask: payers should cover OAT provided by a qualified dentist after a physician has determined that the patient is intolerant of CPAP. They note that CMS’s PAP adherence rule (4 hours on 70 percent of nights in a 30-day window in the first 3 months) is a coverage definition of use, and that there is no single standard clinical definition of intolerance.

Keep them apart. “Reimburse as first-line for OSA” is a payment-order claim. “Cover after documented CPAP intolerance” is a different payment-order claim. Neither paper repeals the 2015 finding that CPAP lowers AHI and improves oxygenation more. Columbus-area dental marketing often says “frontline” without the AHI caveat. This site will not.

Who is it likely to help?

Adults with OSA who have tried CPAP and cannot use it, or who have heard the efficacy comparison and still prefer an appliance, are the 2015 population. Milder disease has a better chance of reaching a low target AHI with a mandibular device than severe disease does, which is why the guideline kept CPAP as the general first-line option especially when the index is high. There is no reliable chairside predictor that picks responders in advance. Repeat testing after titration is how you find out.

People with few teeth, unstable restorations, active temporomandibular disease, or an inability to protrude the jaw may not be dental candidates even when the sleep diagnosis is perfect. That determination belongs to the dentist who would make the device, after the physician has made the sleep diagnosis. Skipping the physician is how primary snoring gets treated in someone who actually has moderate apnea.

If you already use CPAP reasonably well, switching to an appliance because a neighbor likes theirs is a preference you can discuss. It is not an upgrade on the oxygen tracing. The 2015 authors were explicit that CPAP remains generally first-line on those physiologic outcomes.

Who is it unlikely to help, or likely to disappoint?

Severe OSA in someone who could use CPAP, and is willing to keep troubleshooting the mask, is the group the guideline would still steer toward PAP. Central-predominant disease is not a mandibular-advancement problem. Untreated nasal obstruction can make any oral device harder to tolerate because you have to breathe through a blocked nose with your jaw held forward. Significant periodontal disease and a bite that cannot accept advancement are dental stops.

Boil-and-bite trays sold for snoring are the usual disappointment. The 2015 suggestion is custom and titratable when OA therapy is prescribed. A $40 mouthguard from a pharmacy shelf is not that therapy. It can also delay a real diagnosis while everyone agrees the snoring is “a bit better.”

Side effects are not rare in the literature the guideline reviewed: tooth movement, bite change, jaw discomfort. They are a reason for dental follow-up, not a reason to pretend the device is inert plastic. If protecting a perfect occlusion is the highest priority, say so before impressions.

What if you “only snore”?

The same 2015 document gives a STANDARD recommendation that sleep physicians prescribe oral appliances, rather than no therapy, for adults who request treatment of primary snoring (without OSA). The quality of evidence for reducing snoring was rated high. Conservative measures (weight, position, alcohol) are the usual first attempt; appliances are for people who fail those or want more.

Two limits travel with that recommendation. Diagnosis of primary snoring must be made by a sleep physician, not a dentist, because snoring so often comes with OSA and missing that has consequences. And there was insufficient evidence that treating primary snoring with an appliance improves other health outcomes beyond snoring, sleep quality, and the bed partner’s quality of life. Quieter is a legitimate goal. It is not a cardiac prevention program.

If no one has ever done a sleep study, you do not have a primary-snoring diagnosis. You have a noise. The sleep apnea workup is how the noise gets classified. Treating it as a dental retail problem first inverts the 2015 order.

Why does the suite number on Alkyre Run Drive matter?

Westerville Sleep Center is Mahmoud Qadoom, MD’s sleep medicine practice in Suite 230 at 450 Alkyre Run Drive. In Suite 300 of the same building, Ohio Sleep Treatment (also operating as Pristine Sleep) is a dental practice that offers oral appliance therapy. Patients mix them up. Google mixes them up. You can park once and still be in the wrong waiting room.

The practices are neighbors, not a joint clinic. Diagnosis, testing, CPAP, and the decision that an appliance is appropriate live in Suite 230 with a physician. Fabrication of a mandibular device lives with a qualified dentist, which may be Suite 300 or another dental sleep practice. This article is not a review of Suite 300’s dentistry. It is a map. If you were referred for a sleep evaluation, you want Suite 230. If you already have a physician’s prescription for an appliance, you want the dentist who will make it. If a website sold you a home test and a device as a bundle before a physician diagnosed you, that is the sequence the 2015 guideline was written to prevent.

We will not pretend the other suite does not exist. We also will not treat a dental first-line reimbursement essay as if it repealed CPAP’s advantage on AHI and saturation. You are allowed to prefer an appliance. You are entitled to the efficacy comparison before you prefer it.

What should you do if you think you are a candidate?

Start with a diagnosis. If CPAP failed, bring the download or the note that the device was returned, not just the feeling. If you prefer an appliance without a CPAP trial, say that in the visit so it can be documented as preference, which the 2015 CPG treats as a valid path, while your insurer may still want a PAP trial. Those two facts can both be true. The CPAP alternatives overview sits one level up from this page.

Call (614) 898-9340 for Suite 230. Ask for the last sleep-study report to be available. Do not arrive with a boil-and-bite already in a glass of water and expect it to count as therapy.