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Flashcards in Direct Post Core systems Deck (8)
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0

What are the primary functions of a post?

1) Retain the core
2) Stabilise the core
3) Obturation of the post canal

1

What are the contraindications for direct posts?

1) Non-restorable tooth
2) Short roots, thin roots, carious roots
3) Bends/ blockages in the root canals
4) Existing root pathology
5) Poor periodontal support
6) If core can be retained and supported without post

2

What are the functions of a core?

1) Foundation for a coronal restoration
2) Retention and stabilisation of coronal rstoration
3) Perform as an interim restoration

3

How can post systems be classified?

1) Method of application
2) Shape
3) Material
4) Passive/ Active

4

What conditions should be assessed prior to considering a post?

Tooth ultimately restorable
Remaining tooth structure sound
Periodontal support
Apical seal
No periapical patholoogy
Sufficient root length
good acccess to tooth
Tooth isolation possible

5

what are the burs used for post hole preparation?

GG burs
peeso drills
ParaPost drills

6

How much GP should be left in the canal?

4-5mm. Measure using pre-op radiograph and use rubber stopper on GG appropriately.

7

How are direct post cementeed into the canal?

Use GIC or resin cements. if using a non-alloy post, silane coating may be required.
Post coated with cement, cement placed in canal with lentulo spiral
Seat post and maintain slight positive pressure
Trim away cement when set