TMJ & Facial Pain
HOW LONG DOES A LOCKED JAW LAST
Huntersville (Charlotte Metro), NC
Most jaw locking resolves in one to two weeks with the right diagnosis and treatment plan.
Most jaw locking resolves in one to two weeks with the right diagnosis and treatment plan.
A locked jaw, known clinically as trismus, means the jaw muscles have tightened to the point that the mouth cannot open fully, generally less than 35 millimeters between the upper and lower front teeth. In most cases, trismus is temporary and improves within 1 to 2 weeks once the underlying cause is treated. Some cases resolve in just a few days, while others, especially those tied to infection, cancer treatment, or significant trauma, can take several weeks to months to fully resolve.
The timeline depends almost entirely on what caused the locked jaw in the first place. Trismus after routine wisdom teeth removal or minor dental work often clears up in a few days as swelling goes down. Trismus caused by infection, jaw joint damage, or radiation therapy tends to last longer and may need active treatment rather than just time.
The single biggest factor in how long a locked jaw lasts is how quickly it gets treated. Dr. Raymond J. Haigney II, FACS at Lake Norman Oral & Facial Surgery sees this pattern consistently: patients who come in within the first week of symptoms recover faster and more fully than those who wait.
Trismus is a symptom, not a disease on its own, and it can stem from several different sources:
Injury-related trismus usually resolves as the underlying injury heals. Infection-related trismus improves once the infection is treated. Trismus from radiation or chronic joint disease tends to be more stubborn and may require ongoing management.
Most people with a locked jaw shift to soft, nutrient-dense foods and liquids while symptoms are active, both to reduce strain on the jaw and to maintain nutrition during recovery.
See an oral surgeon or your dentist promptly if your jaw opening is noticeably restricted, especially if it is accompanied by fever, facial swelling, or pain that is getting worse rather than better. These signs point toward infection, which needs treatment beyond stretching exercises or medication. Trismus that has lasted more than 2 weeks without improvement, or that followed a jaw injury, also warrants an evaluation to rule out a fracture or joint damage that needs surgical correction.
Treating a locked jaw starts with identifying and treating the underlying cause. From there, treatment typically includes:
With early, consistent treatment, most patients see meaningful improvement within 1 to 2 weeks. Cases tied to radiation, severe joint disease, or long-standing scarring can take longer and may need a combination of physical therapy, medication, and in some cases surgical release.
A locked jaw overlaps closely with TMJ disorders, since joint inflammation and muscle tension are common drivers of both. If your jaw locking recurs, clicks or pops, or is accompanied by chronic jaw pain rather than a single acute episode, it is worth discussing whether the trismus is likely to resolve on its own or whether it points to a longer-term TMJ issue that needs its own treatment plan.
If your jaw has been locked for more than a few days, or you are dealing with pain that is not improving, do not wait it out. Dr. Haigney and the team at Lake Norman Oral & Facial Surgery can evaluate the cause and get you started on the right treatment. Call (704) 987-3132 or request an appointment online.
Related Article: What Is a Jaw Infection and What Does It Feel Like?
Words cannot express enough, how wonderful, caring and professional Dr. Haigney and his staff are! After being rushed to the Huntersville hospital with an orbital fracture, broken nose and other facial damage, Dr. Haigney rushed me into surgery (on his day off I must add) and corrected all my problems. I only wish all doctors cared as much about their patients and their recovery as Dr. Haigney and his staff did. Thank you so much for everything! Your attention and compassion has helped me make my recovery as comfortable as possible. 5 star service!
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