Hello after root canal treatment tooth become brittle, because of loss of blood supply and looses it's water. So there are chances that tooth can get fracture from normal masticatory forces. So it is always advisable for caping after a root canal treatment.
If it got fractured then whats the use of doing root canal treatment.
go for a cap as after rct tooth becomes brittle.and eventually it will break or might fracture.so to protect from fracture a cap is suggested.
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