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What is Post is not required in all of the following conditions except: and explain in detail?
Conditions where post should not be given:

Any sign of endodontic failures are evident, i.e. tooth exhibits:
	
Poor apical seal and poor quality obturation
Active inflammation
Presence of fistula or sinus
Tender on percussion


If adequate retention of core can be achieved by natural undercuts of crown.
If there are horizontal cracks in the coronal portion of the teeth.
When tooth is subjected to excursive occlusal stresses, that is, when there is presence of lateral stresses of bruxism or heavy incisal guidance.