I've fitted CPAP machines for 20 years. Your GP won't tell you this. Your sleep clinic can't. But the mask isn't the only way to fix sleep apnoea — and for most patients, it isn't even the best.

Dr Graham Bennett, MBBS, MRCP — UK sleep specialist

Last Updated Jan 3. 2026

I used to tell every patient the mask was the answer. I don't say that anymore.

Twenty years ago I fitted my first CPAP machine. I've fitted thousands since.

I've watched the same story play out in my clinic on repeat.

A man walks in exhausted. Leaves with a machine. Comes back three months later saying he can't wear it.

I used to tell him to persevere. I used to call it a compliance issue.

I don't anymore.

Because after two decades of watching good patients fail the mask, I stopped believing the problem was the patient.

The problem is the mask. It's the only solution we're allowed to offer.

And for most people it will never work.

You shouldn't pay £1,500 for a custom dental device. Here's why.

Every mandibular advancement device does the same physical job.

It holds the lower jaw forward while you sleep.

That stops the jaw falling backward.

That stops the tongue collapsing into the airway.

That stops the snoring and the apnoea events.

That is the mechanism. It doesn't change with price.

With the custom dental device for £1,500, you're paying for the consultation.

The impressions. The fitting appointment.

The titration appointments over the following weeks.

Every one of them costs money.

That's where the £1,470 goes.

Not the device.

I've been asked why I'm putting my name to a £30 mouthpiece.

I want to be clear. I'm not being paid to write this. I don't have a commercial arrangement with anyone in this space.

AirVex is the only consumer device I've seen that delivers the same mandibular advancement my private patients paid £1,500 for.

That's the only reason my name is on this page.

For some patients, CPAP is life-changing. For others, it makes things worse. I've stopped pretending there's one answer for everyone.

Some of my patients love their CPAP. It changed their lives.

I'll fit one tomorrow for any patient it suits.

But I've also watched hundreds of men fail it.

It wasn't them. It was the machine.

The mask leaks. The pressure ramps.

The hose pulls when you turn over.

You wake with a dry mouth. You wake gasping.

You wake at 3 AM having pulled the mask off in your sleep without remembering.

Your wife hears the machine all night. She doesn't sleep either.

And here's what nobody tells you.

Even when a CPAP machine brings your AHI number down, it often doesn't fix the exhaustion.

You can wake up with a good number on the report and still feel destroyed.

Because a machine that wakes you four times a night hasn't given you your sleep back.

It's traded one problem for another.

That's not a compliance issue. That's the machine doing what it does.

The DVLA doesn't care what fixed your sleep apnoea. They care about the number. Machine, mouthpiece, weight loss, surgery — the reinstatement paperwork is the same.

I know the fear.

Losing your licence. Losing your job with it. Not knowing what to do now.

I've seen it a hundred times.

Here's what I want you to understand.

The DVLA has one question.

Is your condition controlled.

That means one thing — is your AHI number below the threshold, and has your daytime sleepiness resolved.

They don't ask how you got there.

I've signed reinstatement paperwork for men who brought their number down with a machine.

With a mouthpiece.

With weight loss. With surgery.

The form is the same. The DVLA's standard is the same.

Fix the number. Get the sign-off. Send it in.

If you're exhausted every morning. If the mask didn't work for you. If nothing else has helped.

This is what I'd tell you if you sat down in my clinic tomorrow.

I'd tell you what's actually causing your sleep apnoea.

Your jaw falls backward while you sleep. That's what closes your airway. That's what's been happening for years.

I'd tell you the mask can work. But it hasn't worked for you.

That doesn't mean you failed. It means the mask isn't for you.

I'd tell you what I tell every patient who's been through what you've been through.

Try the mouthpiece first. Give it two weeks.

Sleep with it every night.

Based on every single patient I've given this to, it will work.

Not because it's clever. Because it targets what's actually causing the problem.

Your jaw. Held forward. All night.

You'll know inside three nights.

The snoring stops. The gasping stops. Your wife stops moving to the spare room.

The thing I respect about the company that makes this — they give you 60 nights to try it.

If it doesn't work, you send it back. You get every penny back.

I've never seen a private clinic offer that.

Worst case, you're out nothing.

Best case, you sleep through the night for the first time in years.

If I were you, I'd order it tonight — If it's still available.

— Dr Graham Bennett

See the mouthpiece Dr.Bennett recommends:

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