Hi..
Welcome to Healthcare Magic.
I have gone through your query and can understand your health concerns..
As per your explanation i have come to a conclusion that the second molar which is bothering you got fractured not due to any trauma but due to loss of bandage[filling] and infection leading to caries due to which the tooth got weakened and a part of it has got broken..
Due to fracture of the tooth the inner portion of the tooth that is the inner dentine is exposed and the central portion of the tooth that is PULP which contains nerves and blood vessels has got a thinner covering on it now, so whenever you eat or drink something hot or
cold there must be sensitivity and discomfort..
As per the symptoms I can evaluate that the tooth can be saved but it needs treatment and consulting a
dentist is needed..
The dentist will take an x-ray and evaluate the condition of the tooth..
In case if the Pup is not exposed and there is a considerable layer of dentine over the pulp then filling of the tooth with a permanent filling material followed by Capping of the tooth is the treatment to be done..
In case if the pulp is exposed then the
Root Canal Treatment has to be done and then the tooth has to be capped after 15 to 2O days..
As of now if there is pain you can take
Advil [Ibuprofen]..
You should not wait and get appointment with a dentist soon as more the time will go off more will be the decay and there are chances that the tooth can fracture completely as well as there can be an outbreak of
severe pain..
Hope this information helps..
If you find the answer helpful please give me a Five Star Review and click on found the answer helpful as a token of appreciation..
Thanks and regards..
Dr.Honey Nandwani Arora..