Ligament pain can also happen if food (even something as small as a poppy seed) becomes impacted within this ligament somewhere (this is also called a foreign body reaction). Ligament pain can be very subtle, though, and many dentists misdiagnose it for pain from decay in the tooth because you can experience cold and sweet sensitivity.
TREATMENT: Sometimes the impacted food particle can be flushed out with a rinse. However, more stubborn particles must be removed by a dentist.
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