Hello sir!
Prolonged pain or sensitivity after exposure to cold indicates pulpal inflammation which is called as pulpitis. It is mainly caused by bacterial infection which itself is a secondary development of caries. It can be reversible or irreversible. Reversible condition can be treated by removing the cavity and filling the tooth. For irreversible pulpits RCT can be done.
Next Steps
Visit your dentist immediately.
Answered2018-12-04 12:53:55
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