Teeth Grinding & Jaw Clenching: What Can They Do to Your Teeth?

Teeth grinding and jaw clenching are easy habits to overlook, particularly when they happen during sleep. You may not realise anything is happening until a tooth starts to feel sensitive, a filling chips or your dentist notices that the biting edges of your teeth are becoming worn.

Teeth grinding, known as bruxism, and jaw clenching can place repeated pressure on the teeth and the muscles responsible for moving the jaw. For some people, this happens while they are awake. For others, it takes place during sleep, which can make the habit much harder to recognise.

At 76 Dental in Water Orton, Birmingham, patients do not always come in knowing that they grind their teeth. More often, we identify the possibility through changes inside the mouth, from subtle tooth wear and sensitivity to small chips, cracks or changes to existing dental work. The good news is that recognising these signs early gives us an opportunity to protect the teeth and help prevent further wear or damage.

What Is Bruxism?

Bruxism is the term used for grinding or clenching the teeth. Although the two behaviours are closely related, they are slightly different.

Teeth grinding involves moving the teeth against each other, often with a sliding or gnashing movement. Jaw clenching usually means holding the upper and lower teeth together with sustained force, sometimes without much movement at all. Both can happen during the day or at night.

Awake bruxism can be surprisingly subtle. You might find yourself clenching while concentrating at a computer, driving, exercising or dealing with a stressful situation. Unless you consciously check what your jaw is doing, it can become an unnoticed habit.

Sleep bruxism is harder to identify yourself. A partner may hear grinding during the night, but many people only discover it when their dentist notices characteristic changes to their teeth.

How Do I Know If I Grind My Teeth in My Sleep?

Because sleep bruxism happens while you are unconscious, the signs are often indirect.

You may notice:

• jaw stiffness or aching in the morning

• teeth becoming increasingly sensitive

• chipped or cracked teeth

• teeth appearing flatter or shorter

• rough or worn biting surfaces

• fillings, crowns or other dental restorations becoming damaged

• a partner hearing grinding noises while you sleep

Not everyone experiences all of these signs. Some people grind quite noticeably without discomfort, while others predominantly clench and may make very little noise.

This is where a dental examination can be particularly helpful. Rather than relying on a single symptom, your dentist can look at the overall pattern of wear and check whether the teeth are showing signs of excessive pressure. Spotting subtle changes early can make it much easier to protect the teeth going forward.

What Does Teeth Grinding Do to Your Teeth?

Teeth are designed to cope with significant forces during normal biting and chewing. Bruxism is different because those forces can be repeated for prolonged periods, often without food between the teeth to absorb some of the pressure. Over time, this can begin to change the teeth themselves.

The biting edges may gradually become flatter and areas of enamel can wear away. As more tooth structure is lost, teeth may appear shorter or develop rough, uneven edges. Small chips can occur, and with more established grinding, repeated force may contribute to cracks or fractures.

Wear can also expose deeper, more sensitive areas of the tooth, which is why some people with bruxism begin to notice sensitivity despite having no obvious cavity. Existing dental work is exposed to the same forces, so fillings, crowns and other restorations can also be affected when grinding or clenching is persistent.

Natural tooth structure that has already been lost does not grow back, which makes prevention particularly valuable. The earlier we recognise excessive wear, the more opportunity we have to protect the healthy tooth structure that remains.

For milder cases, we would usually focus on protecting the teeth before substantial damage develops. Where there is already significant wear, cracking or damage to dental restorations, we can assess the condition of those teeth and decide what needs attention. Identifying bruxism early can therefore make a meaningful difference to long-term dental health.

Can a Mouthguard Help With Teeth Grinding?

A clear mouthguard may be recommended to help protect the teeth from the effects of grinding or clenching.

Its main role is protective. The mouthguard creates a physical barrier between the upper and lower teeth, reducing direct tooth-on-tooth contact while it is being worn. For someone who grinds during sleep, this can help limit continued wear caused by the teeth repeatedly moving against one another.

A mouthguard does not necessarily stop the underlying grinding or clenching habit. Instead, it gives the teeth an important layer of protection from its effects.

For someone with relatively healthy teeth but early signs of overnight grinding, preventing further wear may be the priority. If teeth are already cracked, heavily worn, sensitive or painful, those concerns can be assessed at the same time so that the overall health of the teeth is taken into account.

What Is Masseter Treatment for Jaw Clenching and Grinding?

For patients where strong or persistent muscular clenching is an important part of the problem, masseter treatment may be a suitable option.

The masseters are large, powerful muscles on either side of the jaw that contract when we bite and chew. In people who regularly clench or grind, these muscles can become repeatedly overactive, generating considerably more force than is needed for normal jaw function. That force is then transferred through the bite to the teeth.

Masseter treatment involves placing small, carefully controlled injections of botulinum toxin into specific points within these muscles. Botulinum toxin temporarily reduces the nerve signals responsible for muscle contraction. By reducing excessive activity within the masseters, the muscles are less able to contract with the same intensity, while normal movements required for speaking, eating and chewing are maintained.

The effect develops gradually rather than immediately. As muscle activity reduces, the strength of excessive clenching can decrease. In people who have developed particularly prominent masseter muscles through repeated clenching, the muscles may also gradually reduce in bulk.

At 76 Dental, Masseter treatment is considered within the context of the patient's wider dental health. By looking at the teeth, the existing pattern of wear and the symptoms of grinding or clenching, we can consider how best to reduce excessive forces while protecting the teeth from their longer-term effects.

When Should I See a Dentist About Teeth Grinding or Jaw Clenching?

You do not need to wait until a tooth breaks before mentioning grinding or clenching to your dentist. In fact, earlier assessment can give us more opportunity to protect the teeth before wear becomes more established.

It is worth arranging an assessment if you notice visible tooth wear, increasing sensitivity, recurrent chips or cracks, unexplained changes to fillings or crowns, or if somebody has told you that you grind your teeth while asleep. The same applies if your teeth or bite suddenly feel different.

If a tooth becomes cracked or significantly painful, it is important to have it examined promptly. Grinding may have contributed to the problem, but your dentist can assess the tooth itself and determine whether any treatment is required.

Regular dental examinations can also help identify bruxism before you become aware of it yourself. Subtle changes to the biting surfaces may be easier for a dentist to recognise and monitor over time, allowing preventative measures to be considered sooner.

Frequently Asked Questions About Teeth Grinding and Jaw Clenching

Can children grind their teeth?

Yes. Teeth grinding can occur in children as well as adults. If you hear your child grinding regularly or notice tooth wear, sensitivity or damage, mention it at their dental appointment so their teeth can be assessed.

Can bruxism damage fillings or crowns?

Yes. Repeated heavy forces can place additional stress on both natural teeth and dental restorations. If a filling or crown repeatedly chips, fractures or becomes damaged, your dentist may consider whether grinding or clenching is contributing and how the teeth can be better protected.

Is jaw clenching always worse at night?

No. Some people predominantly clench while awake, particularly when concentrating, working or under pressure. Others experience sleep bruxism, and some people do both.

Should my teeth touch when my mouth is resting?

Your teeth do not generally need to be held firmly together when your jaw is relaxed. If you frequently notice yourself pressing them together during the day, it may help you recognise an awake clenching habit.

Can I have bruxism without making a grinding noise?

Yes. Clenching can involve sustained pressure with very little movement, so it may be completely silent. A sleeping partner not hearing grinding does not necessarily mean that excessive jaw clenching is not occurring.

Worried About Teeth Grinding or Jaw Clenching in Birmingham?

If you have noticed worn, sensitive, chipped or cracked teeth, or suspect that you may be grinding or clenching, a dental examination is a good place to start.

At 76 Dental in Water Orton, Birmingham, we can assess the teeth for signs of bruxism, look at the extent and pattern of any wear and discuss whether options such as a clear mouthguard or Masseter treatment for clenching and grinding may be appropriate.

By identifying excessive forces early, we can focus on protecting healthy tooth structure, reducing the risk of further wear and addressing any dental concerns that have already developed.

If you are concerned about teeth grinding, jaw clenching or unexplained tooth wear, book a consultation with 76 Dental in Water Orton, Birmingham for an individual assessment.