Jaw bone pain when opening the mouth or yawning can be caused by several factors, including:
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Temporomandibular Joint (TMJ) Disorders: Issues with the TMJ, where the jawbone meets the skull, can lead to pain when moving the jaw. This can be due to arthritis, jaw alignment issues, or muscle tension.
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Bruxism: Grinding or clenching the teeth, especially at night, can cause significant strain on the jaw muscles, leading to pain.
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Muscle Tension: Stress and anxiety can lead to tightness in the muscles around the jaw, resulting in pain when moving the mouth.
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Infections: Infections in the area, such as dental abscesses or osteomyelitis (infection of the bone), can cause localized pain.
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Dental Issues: Tooth problems, such as cavities or an impacted wisdom tooth, can also lead to referred pain in the jaw.
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Injury or Trauma: A recent injury to the jaw or face can result in pain when moving the jaw.
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Sinus Infections: Sinus pressure can sometimes cause discomfort that feels like jaw pain, particularly when yawning or opening the mouth wide.
If you are experiencing persistent or severe jaw pain, it's best to consult a healthcare professional or a dentist for a proper diagnosis and treatment.