How to Take a Dental Impression at Home (Custom Mouthguard Guide UK)

Getting your custom mouthguard impression right at home is the key to a perfect fit.

This step-by-step GuardX guide shows you exactly how to take a dental impression at home, so your mouthguard fits comfortably, stays locked in, and allows better breathing during training.

Watch the full GuardX impression tutorial

What’s in your custom mouthguard impression kit?

Your GuardX mouthguard impression kit includes everything you need:

• Impression trays
• 2x Dental putty (blue + white)
• Gloves
• Resealable return bag
• Prepaid return label

This is a complete at-home dental mould kit - no dentist needed

How to take a dental impression at home (step-by-step)

Follow these steps carefully to get the best result from your custom fit mouthguard UK.

1. Prepare properly

Wash your hands and put on the gloves.

A clean setup ensures a more accurate dental impression.

Use a mirror to help position the tray correctly in your mouth.

2. Mix the dental putty

Take one blue and one white putty.

Mix them together until you get a consistent light blue colour, no white streaks. 

This step is essential for a proper mouthguard mould.

Work quickly here, as the material will start to harden once mixed.

3. Shape the impression tray

Roll the putty and press it evenly into the tray.

Make sure it’s evenly spread to capture your teeth correctly.

4. Take your mouthguard impression

Place the tray into your mouth and bite down firmly.

• Hold for 3 minutes
• Don’t talk
• Don’t move it

This creates your custom mouthguard impression.

Make sure you bite firmly enough to capture your gum line as well, this is important for accurate 3D scanning later in the process. 

5. Remove and check your dental mould

Carefully remove the tray.

You should see a clear impression of your teeth. This ensures your custom fit mouthguard will be accurate and comfortable.

If your first attempt doesn’t come out right, don’t worry — you’ve got a second attempt included in the box.

6. Send your impression back

Place your mould into the resealable bag, then into the return packaging.

• Seal it
• Attach the prepaid label
• Drop it at any Royal Mail location

What happens after your impression?

Once we receive your custom mouthguard impression:

• Your bite is digitally mapped
• Your GuardX is built in our UK lab
• Hand-finished for performance and comfort

Then shipped directly to you.

Why a proper mouthguard fit matters?

A well-made custom mouthguard gives you:

• Better airflow and breathing
• A secure, locked-in fit
• No movement during training
• Less distraction, more focus

This is especially important for boxing, MMA, BJJ, and other contact sports.

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Common Questions

How long does a custom mouthguard take in the UK?

Typically around 1–2 weeks, depending on turnaround and delivery.

What if my impression is wrong?

No problem — GuardX offers a fit guarantee. We’ll remake it until it fits properly.

Will a custom mouthguard work with an overbite?

Yes. Each GuardX is built around your exact bite, including overbites and unique gum shapes.

Are at-home dental impression kits accurate?

Yes - when done correctly, they produce highly accurate results used for custom-fit mouthguards.

Final tip

Take your time when making your impression.

A clean, accurate mould means a better fit, better breathing, and better performance.

Ready to get your custom fit?

Order your GuardX mouthguard
Take your impression at home
Train with a mouthguard built for performance

Breathe better. Train harder. Stay sharp.