Do you wake up with a sore jaw, a dull headache, or teeth that feel strangely sensitive? You might be grinding your teeth and not even know it. Bruxism, the involuntary clenching or grinding of teeth, affects anywhere from 8 to 31 percent of the population. It can happen during the day in response to stress, or silently at night while you sleep.
Signs you might be a grinder
Because sleep bruxism happens unconsciously, many people only find out when a partner mentions the grinding sound or when a dentist spots the damage. Common signs include flattened or chipped enamel, jaw soreness upon waking, persistent morning headaches, and increased tooth sensitivity. Left unchecked, bruxism can crack teeth, damage fillings and crowns, and strain the temporomandibular joint (TMJ), leading to chronic jaw pain and even tinnitus.
What causes it?
Bruxism is multifactorial, meaning there’s rarely one single cause. Stress and anxiety are the most widely cited triggers. Other contributing factors include sleep disorders like obstructive sleep apnea, high caffeine or alcohol intake, smoking, and certain medications, particularly SSRIs. Even personality plays a role; highly driven, type-A individuals tend to be more prone to grinding.
What can be done?
The good news is that bruxism is very manageable with the right approach.
Custom night guards are typically the first line of defence. A dentist-fitted occlusal splint creates a barrier between your upper and lower teeth, protecting enamel and reducing jaw fatigue, without stopping the grinding motion itself.
Lifestyle changes make a meaningful difference too. Reducing caffeine and alcohol (especially in the evening), practising stress management techniques like meditation or cognitive behavioural therapy, and improving sleep hygiene can all reduce the frequency and severity of grinding.
Botox injections have emerged as a promising option for more severe cases. By targeting the masseter and temporalis muscles responsible for clenching, Botox can relieve jaw pain and tension in a way that a night guard alone cannot. Most patients notice improvement within one to two weeks, with results lasting three to six months.
When to see your dentist
If you suspect you’re grinding, don’t wait for symptoms to worsen. A dentist can examine your teeth and jaw for telltale signs of wear, discuss your options, and create a personalized treatment plan, like veneers or fillings. Regular checkups are one of the best ways to catch bruxism early, before it turns into a costlier problem.
Bruxism is common, but it doesn’t have to be damaging. With the right combination of dental care and lifestyle awareness, you can protect your smile and sleep better for it.