Hello sir,
There may be a cavity which has developed and it has reached the second layer of tooth i.e dentin so it is causing sensitivity.
Firstly a x ray has to be taken depending on it normal filling or RCT is required we can conclude .
Please consult a dentist at the earliest may be now only filling can suffice but if you delay it will lead only to root canal.
Answered2018-08-06 08:28:24
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