How Silentrin works
Where snoring starts, how the adjustment works, how to fit it, and what to expect from night 1 to the end of your guarantee.
Where snoring starts.
Snoring comes from soft parts of the mouth, throat and nose vibrating as you breathe. According to the NHS, these parts relax and narrow when you are asleep. [5]
The lower jaw is part of that picture. During sleep, the jaw can slide back. The throat gets tighter, and the soft tissue vibrates. Silentrin holds the jaw a little forward, so there's more room to breathe.
Earplugs, white noise and a separate room all work on the person who hears it. Nothing changes at the source, and for many snorers the source is the jaw.
Think of a doorstop. It doesn’t push the door. It keeps the door from swinging shut. Silentrin is designed to do that for your jaw.
Where the jaw is not the cause
Snoring has more than one cause. The NHS lists a blocked or narrow nose, drinking alcohol, sleeping on your back, being overweight and smoking, and the mouth falling open during sleep. A jaw-forward mouthguard is aimed at one of these, not all of them. See the full list
If you have chronic nasal congestion, jaw joint problems, or loud snoring with gasping or heavy daytime sleepiness, talk to a doctor or dentist first. Take the 30-second check
The adjustment: you set it, one step at a time.
The lower tray sits at neutral to begin with. A small key moves it forward in small steps, and back if you need it to.
- Start at neutral
The first nights, the lower tray stays at neutral. Nothing is pushing your jaw forward.
- Move one step
After a few nights, turn each screw to the same mark on the scale, on both sides. The lower tray moves forward one small step.
- Back off if you need to
If your jaw or teeth are sore, move the lower tray halfway back toward neutral. You decide how far, and when.
Upper liningStays fixed.
Adjustment screwsOne on each side, turned by the key, one mark at a time.
Dual trayHolds the position you set.
Lower liningMoves forward with each turn.
While you sleep: the idea in four steps.
This is how the design is meant to work. Every sleeper is different, so the guarantee (60 or 90 nights, depending on the kit) lets you find out for yourself.
- The jaw is held
Two connected trays grip your upper and lower teeth, so the lower jaw stays where you set it. There is no strap.
- The tongue has less room to fall back
The tongue follows the jaw. Holding the jaw forward is designed to keep the tongue from dropping back.
- Designed to keep the airway from narrowing
That is what “to help keep the airway open” means in our description.
- Less narrowing, less to vibrate
Snoring is vibration in a narrow space. That is the logic the design follows.
Fit it in four steps.
About 3 minutes once the water is boiling. Start when the water is at a low boil and your mug of cold water is ready.
You’ll need
- A pot of water
- Kitchen tongs
- A mug of cold water
- A timer that shows seconds, such as the one on your phone
- A mirror
- Heat · 60 seconds
Bring the water to a low boil. Find the upper tray: it has an UP arrow. With the tongs, lower the mouthguard into the boiling water for 60 seconds.
- Cold dip · 3 seconds
Dip it in the cold water for 3 seconds.
- Bite · 30 seconds
Place it in your mouth with the UP arrow facing up. Look in the mirror, center it, and bite down firmly for 30 seconds.
- Set · 30 seconds
Take it out and hold it in cold water for 30 seconds. Then start at neutral.
Molding is done once, so take your time and follow the steps in order. If the fit isn’t right, write to us: the guarantee covers it.
What to expect: night 1, week 1, your last night.
A realistic picture of the first weeks. Everyone’s jaw adjusts at its own pace.
- Night 1Start at neutralLight soreness is possible in the first few days. Your jaw may feel slightly forward when you wake up, and that fades after you take the mouthguard out. Extra saliva is possible at first.
- Week 1Small steps, if you chooseAfter a few nights, you can move forward one step, the same mark on both sides. If your jaw or teeth are sore, move the lower tray halfway back toward neutral.
- Any nightStop if something is wrongStop using it and see your dentist if you have pain, loose or moving teeth, or discomfort that doesn’t go away.
- Night 60 or 90Your decisionThe last night to ask for a refund. Send it back for a full refund. One refund per customer.
Want it day by day? Read “Your first two weeks”, or learn how to measure your own nights.
The parts.
Upper liningAdjustment screwsDual trayLower lining- Dual tray
- One tray fits over the upper teeth, one over the lower. They are connected, so they work together to hold the position you set.
- Calibration key
- A small key turns a screw on each side. Each screw goes to a mark on the scale, the same mark on both sides.
- Boil-and-bite
- You soften it in boiling water, then bite down. It takes the shape of your own teeth, at home.
- What it’s made of
- An ABS structure with a silicone lining. Its specifications list both as food-grade. The lining is the part that takes the shape of your teeth.
- Size
- Silentrin comes in one size. Molding shapes the lining to your own teeth, but every mouth is different, and it may not fit everyone. If it doesn’t fit you, the guarantee applies.
How it compares.
Silentrin is a different kind of device from one made by a dentist. Here is what differs, in plain terms.
| Feature | Silentrin | Dentist-made appliance | Strips, tape, pillows | Earplugs, white noise |
|---|---|---|---|---|
| What it acts on | The position of the lower jaw | The position of the lower jaw | The nose, the lips or the angle of your head | The person who hears the snoring |
| Adjustable | Yes, one step at a time, by you | Yes, by a professional | No | No |
| Molded to your teeth | At home, in about 3 minutes | From impressions of your teeth | No | No |
| Fitted by | You | A dentist | You | The partner |
| Follow-up visits | None built in. We recommend an oral health check before you start | Yes | None | None |
| Typical cost | $49.99 to $99.99 | $1,500 to $4,500 [3] | Varies | Varies |
| Time to decide | 60 or 90 nights from delivery, depending on the kit | Depends on the practice | Depends on the seller | Depends on the seller |
Silentrin applies the same jaw-forward principle at home, molded and adjusted by you. It does not replace a dentist’s care. What the 2015 guideline says
Keep it clean.
- Rinse
Rinse it in cold water after each use. Hot water softens the lining.
- Brush
Brush it gently with a soft toothbrush and toothpaste.
- Rinse and dry
Rinse it again and dry it.
- Store
Keep it in its ventilated case, like a toothbrush.
You can also soak it in denture cleaner. The Pair adds a dual-head cleaning brush, and the Complete Kit adds the brush and a small ultrasonic cleaner.
What’s in each kit.
| In the box |  Single |  The Pair |  Complete Kit |
|---|---|---|---|
| Mouthguard (two connected trays) | 1 | 2 | 2 |
| Calibration key | 1 | 2 | 2 |
| Ventilated case | 1 | 2 | 2 |
| Dual-head cleaning brush | |||
| Ultrasonic cleaner | |||
| Nights to decide | 60 | 90 | 90 |
| Price | $49.99 | $74.99 | $99.99 |
Sharing a bed? The Pair has two mouthguards, one for each of you: each person needs their own, because it is molded to one person’s teeth. Free US shipping on orders from $74.99.
What the extras are
- Dual-head cleaning brush (The Pair and the Complete Kit)
- A brush made for cleaning the mouthguard, with two heads. Use it in your daily routine, in place of a soft toothbrush: brush gently with toothpaste, rinse in cold water, dry, and store it in its case.
- Ultrasonic cleaner (Complete Kit)
- A compact cleaner, 50 kHz, 200 ml tank, battery included. It is for a deeper clean on top of the daily rinse and brush. Fill it with cold water, because hot water softens the lining, and follow the manufacturer’s instructions.
Before you start.
Ask your dentist or doctor for an oral health check to make sure it suits you. Silentrin is not a treatment for sleep apnea. If you have been told you have sleep apnea, or you think you might, talk to your doctor before using it. Silentrin is for adults 18 and older. Keep it out of reach of children.
Don’t use it if you have or may have
- central sleep apnea
- a severe breathing condition such as asthma or emphysema
- a jaw joint disorder (TMD), jaw pain or clicking
- loose teeth or advanced gum disease
- braces or orthodontic treatment
- a dental implant placed in the past 12 months
Possible effects
Tooth movement or a change in your bite, sore gums or teeth, a sore jaw joint, extra saliva, and harder breathing through the mouth.
Loud snoring with gasping or choking, or heavy daytime sleepiness, can be signs of sleep apnea. If that sounds like you, see a doctor.