Restorative dentistry - Fillings
Fillings are done to restore teeth which have cavities. After numbing the tooth, the cavity it is cleaned as to eliminate all decay. Thereafter it is prepared and “filled” with material to close the “hole.”
In some instances the hole is very big or the cavity has progressed - causing the nerve to be affected & respond. This is when you will experience increased sensitivity and/or prolonged/spontaneous pain. In these cases a filling on its own will not resolve your pain. You would then require extended treatment/Root canal treatment or alternatively an extraction.