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FAQ: Dentistry Answers for Dentists

Question:
Topic: Root Canal Problem
I performed an a re-root canal for a molar on the left side. I applied the usual root canaling techniques to clean it several times and tried re-filling it with different grades of inert fillings.

But still when the inert filling touches the root base, the patient complains of pain (he has no allergy to the inert filling as he have had other successful canals). His symptoms started with funny sensation while chewing and pain in the same tooth which radiated around. I consulted with a neurologist, and ENT doctors to ascertain neuralagia or TMJ disorders, which I now confirm that are not present.

Now the pain is localised only to the base of teeth and begins when pressure is applied on the teeth. When I dress the canal with antibiotic and no filling inside, the patient reports no pain at all. I feel the tip of the root of the molar and the adjacent last molar root have the same problem. All the other roots of both the teeth are fine. ...Dentist from Mumbai India

Answer:
I need a little more information about this case. Is the tooth an upper or lower molar? If it is an upper Molar than the apex of the roots may be close to the sinus membrane and the fill material may be placing pressure on it. There may also be a fracture in the tooth and the fill material is spreading the fracture causing the pain.

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