My thoughts on the DNA appliance

Does it work? Is it damaging? etc.

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The DNA appliance has gained significant attention in the orthodontic and airway treatment communities as a purported solution for sleep apnea, TMJ disorders, and facial development issues.

Today i’m going to share my thoughts on it.

What is the DNA appliance?

The DNA (Daytime-Nighttime Appliance) was developed by Dr. Dave Singh, a dentist who has positioned himself as a pioneer in what he calls "pneumopedics" - the practice of developing the airway through dental appliances.

Dr. Singh founded the Foundation for Airway Health and has built a considerable following around his approach to treating sleep-disordered breathing through palatal expansion.

Here is a video of Dr. Singh talking about the appliance.

The DNA appliance itself resembles a combination of a retainer and an expander. It's a removable device that fits over the upper teeth and contains expansion screws that are gradually turned to supposedly widen the palate and expand the airway. The device is typically worn for several hours during the day and throughout the night, hence the "daytime-nighttime" designation.

In terms of cost, DNA appliance treatment is expensive, often ranging from $6,000 to $12,000 or more depending on the practitioner and geographic location. This puts it in the premium category of orthodontic treatments.

The number of dentists offering DNA appliance treatment has grown considerably since its introduction, with Dr. Singh's organization training hundreds of practitioners worldwide. However, it's worth noting that this represents a small fraction of practicing dentists, and the treatment remains somewhat niche within mainstream dentistry.

They claim the DNA appliance can address a wide range of issues including sleep apnea, snoring, TMJ disorders, facial asymmetry, and even neurological symptoms. The promised benefits extend beyond just oral health to encompass better sleep, improved breathing, enhanced facial aesthetics, and overall health improvements.

How do they say it works?

The fundamental theory behind the DNA appliance centers on the concept that many health problems stem from underdeveloped facial structures, particularly a narrow palate and constricted airway.

Dr. Singh is in the camp that says that modern lifestyle factors have led to widespread facial underdevelopment, creating a cascade of health issues.

The DNA appliance supposedly works by applying gentle, continuous pressure to gradually expand the maxilla (upper jaw). This expansion supposedly not only widens the palate but also stimulates bone growth and remodels the entire craniofacial complex. The theory suggests that by expanding the upper jaw, the airway opens up, the tongue has more room to rest properly, and various health issues resolve naturally.

The mechanism is said to work through "epigenetic orthodontics" - the idea that the appliance can influence genetic expression and trigger natural growth patterns that were suppressed during development.

Practitioners claim that the gentle forces applied by the DNA appliance can "unlock" the body's natural growth potential, even in adults who are well past their normal growth phase.

Additionally, the DNA approach incorporates concepts from cranial osteopathy, suggesting that the expansion affects not just the teeth and jaw but the entire cranial system. Practitioners often work with other healthcare providers like osteopaths, chiropractors, and myofunctional therapists to address what they see as a whole-body problem.

The treatment typically involves wearing the appliance for 12-16 hours daily, with periodic adjustments to gradually increase the expansion. Treatment duration can extend from 18 months to several years, depending on the individual case and desired outcomes.

How it compares to other expanders?

When comparing the DNA appliance to other expansion methods, several key differences emerge.

MARPE (Maxillary Assisted Rapid Palatal Expansion) and MSE (Maxillary Skeletal Expander) are surgically-assisted expansion techniques that use mini-implants anchored directly into bone to achieve expansion.

These methods are thought to produce more predictable and substantial expansion but require surgical placement and are typically used for more severe cases.

Unlike these other systems, the DNA appliance markets itself as being gentler and more "physiologic," claiming to work with the body's natural processes rather than forcing rapid changes. Proponents argue this makes it safer and more stable than aggressive expansion techniques.

Before & After photo of a DNA appliance user

My views on it

To put it plain… i think the DNA achieves nothing beneficial and probably only damages most people.

Have a look at this ‘expansion’ by a DNA appliance user above. Initially looks impressive no?

But note that all of the teeth on the ‘after’ photo are flared outward. You can achieve the same exact correction without the flairing with a simple mouthguard.

This is 9 months use of a Myobrace by a person in my old Facebook group years back.

What looks healthier? The ‘after’ photo of the DNA appliance where all the teeth are all flaired? Or this photo of my friend who used Myobrace for 9 months?

It doesn’t take much to see that it ain’t even close. The Myobrace expansion wins by a landslide.

And there are lots of people doing Reviv now that are well on their way to achieving similar.

You see…. it comes down to how you believe the skull works. I am quite confident that the soft tissue (fascia, skin, etc) covering the skull inflates and deflates like a balloon. And that the way to stretch that soft tissue is by wearing an appliance like a mouthguard that:

1- adds vertical
2- unlocks the occlusion (prevents teeth from coming together in their normal position)

The way not to stretch the tissue is by using the force of an expander the way a DNA appliance does. Because if the soft tissue doesn’t inflate then in fact you are not expanding anything. You are only deranging the cranial bones.

Meaning that the DNA appliance pushes outwards on the palate which causes the rest of the cranial bones to compensate because the balloon that is holding them all is not getting larger.

And so when i look at the before and after photos of folks that have used this appliance I consistently note one thing… their skulls are not ‘inflating’ which is the effect that a mouthguard has.

Rather they typically seem to be deflating a bit. And then of course the dentist’s marketers will try to use some combination of lighting and angle to make things look more flattering in the ‘after’ photo.

But i’d love to see these people a couple years on. Because my hypothesis is that their skulls continue to ‘collapse’ because the occlusion will be stabilizing from the artificial changes that were made by the appliance.

Meaning that the teeth will continue to reposition from the forces of the skull, the curve of spee will likely continue to flatten, and the person will likely become more assymetric and potentially have more health issues.

Who wants to bet?

I’ve already seen it many times in folks that used other types of traditional palate expanders. They almost always look more assymetric and get worse over time.

Closing thoughts

In 2024 the DNA appliance was cleared for FDA compliance to treat moderate to severe Obstructive Sleep Apnea (OSA) in children.

In adults in one study (link) about 28% of patients had their apnea-hypopnea index (AHI), a measure of sleep apnea severity, drop below 5 AHI. Sleep apnea is generally regarded as having >5 score.

And so you might be thinking… “Voila! it must work! It improves your breathing and even the FDA recognizes it!”

But alas I think this thinking would be short sighted.

It is forcing the airway open with force and so yes some folks might breathe better. But at what cost?

At the cost of the cranial bones and entire skeleton compensating (for the worse) most likely.

To me it’s kind of like drilling a hole through a collapsed building and calling it a win. You can walk through the building again!!

Never mind that the building collapsed further and you’ve made resurrecting that building a lot harder.