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What Is Bruxism and What Are the Symptoms?

01/10/2026

Many people are surprised to learn that they grind their teeth. Often, it is a partner who mentions hearing it at night, or a dentist who points out unexplained wear on their enamel. Bruxism, the clinical term for habitual teeth grinding and jaw clenching, is one of the most under-recognised dental conditions, partly because it most often happens during sleep. Yet its effects accumulate quietly, day by day, until the damage becomes difficult to ignore. 

Understanding what bruxism is and what its symptoms look like is the first step toward protecting your teeth, jaw, and overall wellbeing. This guide from Platinum Dental Care in Canary Wharf walks you through everything you need to know about bruxism symptoms, from the obvious ones to the easily missed.

What is bruxism?

Bruxism is the involuntary grinding, gnashing or clenching of the teeth. It can happen during the day, during sleep, or both, and the forces involved can be substantial, far greater than the pressure used during normal chewing. Some episodes are forceful enough to wear down enamel, fracture restorations, and strain the jaw muscles.

There is an important distinction between two closely related habits:

• Clenching: sustained pressure where the upper and lower teeth are pressed firmly together
• Grinding: the rhythmic side-to-side or front-to-back movement of teeth against each other

Most people with bruxism do both, often without realising it.

The two main types of bruxism

Dentistry recognises two distinct forms of bruxism, each with different causes and treatment approaches:

• Awake bruxism usually involves clenching rather than grinding and tends to be triggered by stress, concentration or strong emotion. Many people clench while working at a screen or driving without noticing.
• Sleep bruxism is classified as a sleep-related movement disorder. Episodes happen unconsciously and can be linked to factors such as stress, sleep apnoea, certain medications, and lifestyle triggers like caffeine or alcohol.

Recognising which type (or which combination) applies to you helps guide both diagnosis and treatment.

Bruxism symptoms to watch for

Bruxism symptoms can be wide-ranging, and many of them are easy to attribute to other causes, such as a poor night’s sleep, a stressful week, or general tiredness. The full picture only becomes clear when you look at the symptoms together. Common teeth grinding symptoms fall into several groups.

Dental symptoms. These are the cumulative results of repeated mechanical force on tooth surfaces:

• Visibly worn, flattened or shortened teeth
• Chipped or fractured teeth, including hairline cracks
• Cracked, loose, or repeatedly failing fillings, crowns or veneers
• Increased sensitivity to hot, cold, sweet or acidic foods as enamel thins and dentine becomes exposed
• Receding gums without obvious gum disease

Jaw and muscle symptoms. Hours of nighttime activity leave the jaw muscles overworked, much like any other muscle group that has been pushed too hard:

• Aching, tight or fatigued jaw muscles, particularly in the morning
• Clicking, popping or restricted movement of the jaw joint
• Pain that radiates into the temples, ears or down the neck

Head, ear and neck symptoms. The jaw muscles share nerve pathways and structural connections with surrounding tissues, so tension easily refers to the head and neck:

• Tension headaches, especially at the temples on waking
• Earache or a feeling of fullness in the ears with no infection
• Persistent neck or shoulder tightness

Sleep-related symptoms. Grinding episodes interrupt the natural cycles of deep sleep, reducing its restorative quality:

• A partner reporting grinding sounds at night
• Disrupted sleep or restlessness
• Daytime fatigue despite a full night in bed

Soft tissue signs. The pressure of clenching often leaves marks where the teeth meet other tissues in the mouth:

• Indentations along the edges of the tongue
• A raised line of tissue along the inside of the cheek where teeth meet

Most people with bruxism will recognise at least two or three of these signs of bruxism once they know what to look for.

How common is bruxism?

Bruxism affects a substantial portion of the adult population, with estimates suggesting that roughly one in ten adults experience sleep bruxism, and awake bruxism affecting more still. 

It is particularly common in adults under 50, and tends to be more frequently reported by people in high-pressure professional environments, a familiar concern for many of the patients we see in Canary Wharf. Children can also grind their teeth, although they often outgrow it as their adult dentition settles.

Who is most at risk for bruxism?

While bruxism can affect anyone, certain factors increase the likelihood of developing it. Understanding your own risk profile can be useful both for prevention and for spotting symptoms early.

Common risk factors include:

• High stress and anxiety levels. Demanding jobs, deadline pressure, and ongoing life stress are among the most consistent triggers, particularly for awake bruxism.
• Certain personality traits. Research has linked bruxism to traits such as competitiveness, hyperactivity, and perfectionism.
• Sleep disorders. Conditions such as obstructive sleep apnoea, loud snoring, and disrupted sleep architecture are strongly associated with sleep bruxism.
• Lifestyle factors. Heavy caffeine intake, alcohol consumption (especially in the evening), smoking, and recreational stimulant use all increase risk.
• Certain medications. Some antidepressants, particularly SSRIs, and a number of ADHD medications can trigger or worsen grinding.
• Family history. Bruxism often runs in families, suggesting a genetic component.
• Age. Younger and middle-aged adults are more commonly affected than older adults, although it can develop at any stage of life.
• Bite or restoration issues. Misaligned teeth, missing teeth, and ill-fitting crowns or fillings can alter how the upper and lower teeth meet, contributing to grinding patterns.

If several of these factors apply to you, paying attention to early bruxism symptoms is well worth doing, even if you have not yet noticed obvious signs.

Why early diagnosis matters

Because so many bruxism symptoms develop gradually, the condition is often only identified after meaningful damage has occurred. Catching it earlier means simpler, less invasive treatment and far better protection of your natural teeth.

A thorough examination, which at Platinum Dental Care includes Pearl AI-assisted X-ray analysis and 3D digital scanning, can reveal early-stage enamel wear, fine cracks and changes in your bite pattern long before they become visible to you. Restorative & Cosmetic Dentist Dr Amie Patel and the wider team can then build a tailored plan that may include a custom-made night guard, lifestyle adjustments, and where needed, restorative work to repair any existing damage.

Left unaddressed, bruxism can lead to fractured teeth, compromised restorations, chronic jaw pain, and complex temporomandibular joint (TMJ) issues. All of these become harder and more expensive to treat over time.

Taking the next step

If any of the symptoms in this guide sound familiar, you are far from alone, and the situation is very manageable once it is identified. Bruxism is a condition where small, early actions make a substantial long-term difference. A focused dental assessment can confirm whether grinding is the cause, reveal any damage already present, and put you on the path to a tailored plan that protects your teeth, eases your symptoms, and restores comfortable, undisturbed sleep.

Concerned you may have bruxism? Book a comprehensive bruxism assessment at Platinum Dental Care in Canary Wharf and find out exactly what is happening to your teeth, and what can be done about it.