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If you've decided to get a custom night guard, the next question is usually: soft or hard? It sounds simple but the answer actually matters quite a bit. Choosing the wrong type won't ruin anything, but choosing the right one means better protection, better comfort, and a guard that lasts as long as it should.
Here's a plain-language breakdown of the difference between soft and hard night guards, who each one suits, and how to figure out which is right for you.
What Is the Difference Between Soft and Hard Night Guards?
The main difference is the material. Soft night guards are made from a flexible, rubbery thermoplastic that cushions the teeth and absorbs grinding forces through compression. Hard night guards are made from a rigid acrylic that works differently, creating a smooth, flat surface that allows the teeth to slide against each other without gripping, which actually reduces the grinding reflex over time.
Both are custom-made from impressions of your teeth. Both protect your enamel. But they work in different ways and suit different types of grinders.
Soft Night Guards
How They Work
Soft guards are made from a pliable, cushioning material that fits snugly around the teeth. When you clench or grind, the material compresses slightly, absorbing the force. This makes them feel comfortable immediately, with very little adjustment period for most people.
Who They Suit
Soft guards work well for mild grinders and first-time night guard wearers. If you clench more than you grind, if you have a sensitive jaw, or if you've never worn a night guard before, a soft guard is usually the most comfortable starting point.
The Downside
For heavy grinders, soft guards can actually make things worse. The flexible material can encourage the jaw to bite down harder, increasing grinding intensity rather than reducing it. Heavy grinders also tend to wear through soft guards much faster, sometimes within a few months.
Lifespan
6 to 12 months with regular wear and proper care.
Hard Night Guards
How They Work
Hard guards are made from a rigid acrylic material. Rather than absorbing grinding forces through compression, the smooth flat surface allows the teeth to glide without gripping. For many heavy grinders, this actually reduces the grinding reflex over time as the jaw has less to engage with.
Who They Suit
Hard guards are best suited to heavy grinders, people who have been told by a dentist that they grind severely, and anyone who has worn through a soft guard before.
The Downside
Hard guards take longer to get used to. The rigid material feels more foreign in the mouth initially, and some people find them uncomfortable for the first week or two. They also tend to be thicker than soft guards, which some people find harder to sleep with.
Lifespan
2 to 3 years or more with proper care.
Mixed Night Guards: The Best of Both
If you're not sure whether soft or hard is right for you, a Mixed guard is worth considering. It's soft on the inside for comfort and hard on the outside for durability and protection. The soft inner layer feels familiar and comfortable from the first night, while the rigid outer shell provides the kind of protection that heavy grinders need.
Mixed guards suit moderate grinders particularly well, people who grind regularly but haven't worn through guards before, and anyone who wants a balance between comfort and longevity.
Lifespan
1 to 2 years with regular wear and proper care.
Which One Is Right for You?
Here's a simple way to think about it:
- First time wearing a night guard: start with soft or Mixed
- Mild grinding or clenching: soft guard
- Moderate grinding: Mixed
- Heavy grinding or severe bruxism: hard guard
- Worn through guards before: hard guard
- TMJ pain or jaw clicking: speak with your dentist before ordering — the right type depends on your specific situation
- Not sure how severely you grind: Mixed is the safest choice
If you're still unsure, Mixed is the right default. It suits the majority of moderate grinders, it's comfortable from the first night, and it lasts significantly longer than a soft guard.
All three options are available from Jawology at $199, regardless of which type or arch option you choose.
Frequently Asked Questions
Is a soft or hard night guard better?
It depends on how severely you grind. Soft guards are more comfortable and suit mild grinders and first-time wearers. Hard guards are more durable and better suited to heavy grinders. If you're unsure, a Mixed guard is the best all-round option for most people.
Can a soft night guard make grinding worse?
For heavy grinders, yes. The flexible material of a soft guard can encourage the jaw to bite down harder, potentially increasing grinding intensity. If you're a heavy grinder or have been told your bruxism is severe, a hard or Mixed guard is a better choice.
How long does a night guard last?
Soft guards typically last 6 to 12 months. Mixed guards last 1 to 2 years. Hard guards can last 2 to 3 years or more. How long yours lasts depends on grinding severity and how well you clean and store it.
What is a Mixed night guard?
A Mixed guard has a soft inner layer for comfort and a hard outer layer for protection and durability. It suits moderate grinders who want the comfort of a soft guard with better longevity. Most people find it the easiest to adapt to.
Do I need upper or lower arch?
Most people only need a guard on one arch. Lower arch guards tend to be more comfortable and easier to adapt to for most wearers. Upper arch is also available if preferred. At Jawology, single arch and both arches are all $199.
How do I know if I grind my teeth?
Common signs include waking up with jaw pain or headaches, a sore or tired jaw in the morning, worn or chipped teeth, increased tooth sensitivity, and a partner telling you they can hear grinding at night. If you notice any of these, a custom night guard is worth considering.
Stop Grinding. Start Protecting.
Order your custom Jawology night guard for $199. Soft, Mixed or hard, all variants and arch options, one price.
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