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Have you had a cold,flu or sinus congestion in the last several days? Do you grind your teeth at night or clench during the day?
Are you still there?
If the pain is most noticeable in the morning and tends to wander from one tooth to another, TMD is part of any differentail diagnosis (list of possible issues).You may be grinding or clenching your teeth at night, causing "occlusal trauma" (pain / injury from excessive biting force to certain teeth). Do you have any jaw or ear area pain ? Is the discomfort most noticeable when you awake ? It may be that you need an appliance called a "night night". This is a device like ones athletes wear to protect their teeth - only quite a bit smaller. To fully diagnose your problem, xrays and an exam are necessary.
Hope this helps,