This is a question of debate in most dental conferences too.
It will depend on the amount of tooth structure destroyed by decay and how well it can be restored post root canal treatment .
Certain parameters which help the clinician decide whether a RCT should be done or extraction with implantation be attempted are amount of sound tooth structure left , whether all margins of the remaining tooth structure are above or below the gum level ,presence or absence of draining pus around the tooth ,et ...
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