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Muscle spasm or lockjaw is painful and uncomfortable contractions of the upper and lower jaws. This restrains the opening of the mouth widely which is less than 35mm.

What Causes Spasms Of Jaw Muscles?

Spams are the general term for lock jaws or trismus which are a medical term known in dentistry. Severe spasms in jaw muscles lead to lock jaw which includes Temporomandibular Joint Disorder (TMJ).

Because of a locked jaw, jaw muscles remain in their position with no movement causing agitation due to any possible injury, to the muscle, nerve, and bone.

Other causes:

Other causes of lockjaw can include low calcium levels (hypocalcemia) and nerve or muscle diseases that result in muscle spasms.

Symptoms Of Spasms:

Spasm affects the whole jaw by locking it. A lot of nerves and muscles control the movement of the jaw which creates not only an opening of the mouth but headache and ear pain. The impact of locked jaws causes side effects like having difficulty in speech, and swallowing, and then after some time leading to poor oral health which may lead to dry and sore mouth.

If spasms last for several days it can worsen oral health starting from an ulcer in the mouth due to not brushing and flossing of teeth. Tooth enamel can wear off which can chirp the tooth due to problems with eating and swallowing it can result in Malnutrition.

When To Approach The Dentist?

Experiencing any mild symptoms of jaw stiffness, pain, or discomfort, it is recommended to schedule an appointment with the dentist. They can provide muscle relaxants and physical therapy to alleviate the symptoms. Additionally, acupuncture, Botox injections, and stress management techniques may also help. It is important to note that while jaw spasms are not psychological, seeking support from a counselor can assist with managing and coping with this condition.


It’s important to assess your lifestyle and identify any habits that may be causing spasms in your jaw. In addition to consuming hard foods, temporomandibular disorder (TMD) can also make matters worse by chewing gum, sleeping on your stomach, stress, clenching your jaw, nervous habits such as nail or pencil biting, and even yawning. Reducing or avoiding these habits can help alleviate the discomfort.

For further help visit:  Adventure Orthodontics

Location: Sugar City Office 3 Center St Sugar City, ID 83448

Call: (208) 481-8479

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