Nonsurgical retreatment -secondary endodontic ttt, Biology

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Nonsurgical retreatment (secondary endodontic ttt )

-Is the main difference between primary endodontic disease versus post treatment disease is the need to

Regain access to the apical area of the root canal space in the previously treated tooth.”y3ni this causes problems”.

- in the primary there is no restoration inside the canal, no crown; so, reach the pulp space and do instrumentation directly.
While in the secondary retreatment there is post and gutta perca which causes problems as missed canal, ledge and fracture instrument.


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