6. Non-Surgical Retreatment Flashcards

1
Q

What is non-surgical retreatment in endodontics?

A

It is a procedure to remove root canal filing material from the tooth, followed by cleaning, shaping and obturating the canal

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2
Q

What are the contraindications for non-surgical retreatment?

A

The contraindications can be classified as general, restorative or endodontic in nature

General: Patient factors such as uncooperative patients and poor oral hygiene

Restorative: Poor restorative prognosis and periodontally compromised teeth

Endodontic: Thin canal walls with risk of lateral perforations, presence of posts or separated instruments that cannot be removed, severe apical curvatures, apical perforations, root fractures

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3
Q

What are some factors that affect the treatment outcome of endodontic treatment?

A
  • Presence of apical pathosis
  • Bacterial status of canal prior to obturation
  • Extent and quality of obturation: obturating more than 2mm short of the apex will lead to lowers success. The lack of 3-dimensional filling also lowers success
  • Quality of the coronal restoration: Poor seal lowers success
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4
Q

How can Gutta Percha be removed from a tooth?

A
  • Using Files or Paper points with solvents (chloroform)
  • Files and heat
  • Heat removal using system B
  • Ultrasonic removal
  • Rotary Niti Instrument removal
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