Enhanced Verifiable CPD from the
University of Birmingham

Endodontics
Dynamic Access Cavity Preparation

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Designing the access cavity to allow straight line access (SLA) is a dynamic process. The shape of the access cavity is changed during flaring of the canal, to allow the flare to penetrate deeper.

The dynamic process involves
Create initial access cavity
Penetrate canal
    Flare canal
      Adjust access cavity
       Penetrate deeper
         Flare canal
           Adjust access cavity
             ... and so on


This animation shows 3 ways of deeply penetrating a canal, then combines the techniques to achieve deep penetration with maximum conservation of tooth tissues. An upper incisor is used in this example, but the principles apply to all canals.

Excellent content clearly explained.

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