This UK lab guide sets out soft, hard and dual laminate night guards for bruxism: the dual laminate pairs a cushioned inner surface with a rigid outer shell, and sits between the all-soft and all-hard occlusal guards we fabricate for practices across England. It sets out when each material fits, how each wears, and what we need on the prescription to build the right guard the first time.
Every night guard we fabricate is a custom-made device under MHRA regulations, made by a GDC-registered UK dental laboratory (DAMAS and DLA registered) and delivered by tracked courier anywhere in England.
This page covers the three night guard materials we make for grinding and clenching. For the wider appliance family, including hard splints and soft trays, start with our overview of night guards and splints.
The Three Materials We Fabricate
Almost every night guard request reduces to one of three constructions. The right one depends on how hard the patient grinds, what you want the guard to protect, and how long you need it to last.
- Soft: a single layer of flexible EVA, vacuum formed, typically 1.5 to 3 mm. Comfortable on day one, cushions the bite, and easy to seat. It wears and distorts the fastest.
- Hard: a single layer of rigid acrylic or copolyester, pressure formed or processed, usually 1 to 2 mm. It holds a flat, even occlusal plane, resists perforation, and lasts the longest.
- Dual laminate: a soft inner liner bonded to a hard outer shell. The soft side aids retention and comfort against the teeth, the hard side carries the occlusal load. This is the hybrid that the soft vs hard night guard debate usually lands on.
We make all three to the same fit standard. The choice is clinical, not a question of build quality, so the notes below are about matching material to the patient rather than ranking one above the others.
Soft Night Guards: Where They Fit
A soft night guard is the gentlest option to wear and the quickest to settle into. For a patient who mainly clenches lightly, who is wearing a guard for the first time, or who has rejected a rigid appliance on comfort grounds, soft is a reasonable starting point.
The trade off is durability and bite stability. Soft EVA compresses under load, which some patients find invites them to chew or clench into it, and the surface abrades and loses shape within months under real bruxism. We will not specify it for a heavy grinder, because it will not hold up and it cannot give you a stable occlusal contact.
- Best for: mild clenching, occasional grinding, first time wearers, short term protection.
- Typical lifespan: around 6 to 12 months under genuine night time use, less for a strong grinder.
- Watch out: soft material does not give you an adjustable flat plane, so it is the wrong tool when occlusion is the point.
Hard Night Guards: Where They Fit
A hard night guard is made from rigid acrylic or copolyester and is the material of choice for moderate to heavy bruxism. It resists wear, holds a flat and even occlusal surface, and lets you adjust contacts and excursions chairside. For a patient who wakes with worn or chipped teeth, or who is protecting restorations, this is usually what we would specify.
Hard guards take a few nights to get used to and they transmit more of the bite force the patient generates, which is exactly why they protect better. A well finished hard guard is the most durable of the three and the easiest to keep clean.
- Best for: moderate to heavy grinding, protecting crowns, veneers and other restorations, cases where you want to control the occlusal scheme.
- Typical lifespan: commonly 2 to 3 years and often longer, since rigid material resists perforation.
- Note: rigidity is the feature, not a flaw. If the patient cannot tolerate it at all, the dual laminate is the next step rather than dropping to soft.
Dual Laminate: The Hybrid Middle Ground
A dual laminate night guard answers the most common request we get: the durability and occlusal control of a hard guard with a kinder feel against the teeth. The construction is a soft inner liner thermoformed to the model, with a hard outer layer that takes the wear and the load. The soft side hugs the dentition and improves retention, the hard side gives you a surface you can adjust and that will not perforate quickly.
This is the construction behind most of the named hybrid products you will have seen, with a soft polyurethane or EVA liner on the inside and a rigid copolyester shell outside. It suits the large middle band of patients who grind too much for soft but find a single layer hard guard uncomfortable to start with.
- Best for: moderate grinding, patients who want comfort without giving up durability, anyone stepping up from a failed soft guard.
- Typical lifespan: around 1 to 2 years, sitting between soft and hard as the load and the soft liner allow.
- Build note: the soft liner does add bulk, so we will flag clearance with you if the interocclusal space is tight.
Material and Thickness: The Lab View
From the bench, the material decides almost everything about how the guard behaves. Soft is flexible EVA, hard is acrylic or copolyester, and the dual laminate bonds a soft liner to a hard shell. Thickness is the second lever, and we set it against the grinding load and the available clearance rather than to a fixed number.
- Soft EVA: usually 1.5 to 3 mm. Thicker cushions more but distorts and chews faster.
- Hard acrylic or copolyester: usually 1 to 2 mm finished. Rigidity does the work, so it does not need the bulk a soft guard does.
- Dual laminate: a soft liner of around 1 mm under a hard shell, so plan for slightly more overall thickness than a single layer hard guard.
Tell us the arch you want guarded and we will recommend a thickness for the case. If clearance is tight, a thinner hard or dual laminate guard protects better than a thick soft one that the patient bites straight through.
Matching the Guard to the Patient
A short decision path covers most cases. Heavy grinder or worn dentition goes to hard. Mild clencher or comfort first goes to soft. Moderate grinder, or a patient who wants comfort without losing durability, goes to dual laminate. Clenching rather than grinding leans toward a rigid surface, since soft material tends to encourage clenching into it.
If the case is really about controlling the bite rather than just protecting teeth, you may want a named splint design instead of a guard. See our guide to named splint designs.
When you are unsure, send us the grinding severity and what you are protecting, and we will recommend a material with the case. We would rather flag a mismatch before fabrication than have a guard come back.
What to Submit With the Case
A clean prescription gets the guard right the first time. We work from intraoral scans or models, and we accept files from 3Shape, Medit, iTero and Dexis. Capture the full arch you want guarded plus enough of the opposing arch and the bite for us to set the occlusion.
- Material: soft, hard, or dual laminate. If you are unsure, tell us the grinding severity and we will advise.
- Arch: upper or lower, and the opposing arch for the bite.
- Thickness: a target if you have one, otherwise we set it to the load and the clearance.
- Clearance flags: note any tight interocclusal space, especially for a dual laminate where the liner adds bulk.
Scans remove the model and impression variables, so the soft liner seats cleanly and the hard surface needs less chairside adjustment.
Sending a Case to Flora
Flora is a UK dental lab working with UK practices, accredited to DAMAS and DLA and registered with the GDC. Crown and bridge turnaround runs to about 10 working days, and night guards sit in the same digital workflow, so a scan in means a guard back without impression posting.
If you have not sent us a case before, your first one is free, up to a value of £100, with no invoice and no contract. Send a scan or model with the material and arch noted and we will fabricate the guard and tell you if anything on the prescription needs a second look.
Cleaning matters for how long any of these guards lasts, especially the soft liner on a dual laminate. Share our notes on mouthguard cleaning with the patient.
Which is better, soft or hard night guard?
Neither is better in the abstract, it depends on the patient. Hard guards are more durable and protect better under moderate to heavy grinding, soft guards are more comfortable and suit mild clenching or first time wearers. For a middle ground, a dual laminate gives a soft inner liner with a hard outer shell.
Are soft or hard night guards better for bruxism?
For genuine bruxism we usually recommend hard, because soft EVA wears and distorts quickly under heavy grinding and cannot hold a stable occlusal surface. A dual laminate is a good option for moderate bruxism where the patient wants more comfort than a single layer hard guard.
Why would a dental night guard be hard material instead of soft?
Hard material gives durability and a flat, even occlusal plane that you can adjust, and it resists perforation under strong grinding. Soft guards compress under load, can encourage clenching into them, and wear out faster, so a hard guard is the better protective appliance for anything beyond mild use.
What is the most comfortable night guard for teeth?
A soft EVA guard is the most comfortable to wear on the first night, and a dual laminate is the most comfortable option that still protects under real grinding, because its soft inner liner sits against the teeth while the hard outer shell takes the load.
What is a dual laminate night guard?
A dual laminate, or hybrid, night guard bonds a soft inner liner to a hard outer shell. The soft side improves comfort and retention against the teeth, the hard side carries the bite force and resists wear. It suits moderate grinders who find a single layer hard guard uncomfortable. If the patient is also in treatment, see our guide to orthodontic appliances.
How thick should a night guard be?
It depends on the material and the grinding load. Soft guards usually run 1.5 to 3 mm, hard acrylic or copolyester guards 1 to 2 mm finished, and a dual laminate adds about 1 mm of soft liner under the hard shell. We set the final thickness to the case, so send us the arch and the clearance and we will advise.
