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30 Cards in this Set

  • Front
  • Back
Post Systems

Two main categories
(2)
Active
Passive
Post Systems

This type of post is screwed into the root
Active
Post Systems

How far down the length of the root should a post go?
two thirds down the length
Post Systems

Should teeth be root filled prior to post crowning?
Yes
Post Systems

How much root filling should be left in the canal?
3-4mm
Post Systems

A new patient has a periapical of a post-crowned central incisor.
It has no root filling - what is the likely cause?
During removal of the Gutta-Percha for the post the apical portion has been removed accidentally.
Post Systems

Shapes of posts
(2)
Tapered
Parrallel Sided
Post Systems

Surface characteristics of posts
(3)
Threaded
Serrated
Smooth
Post Systems

Materials of posts?
(6)
Cobalt Chrome
Quartz Fibre
Carbon Fibre
Stainless Steel
Titanium
Gold Diaphragm
Post Systems

Indications for custom cast posts?
(4)
Two rooted, parallel sided canals
Oval Canal
Unusual canal taper
Root angulation ≠ crown angulation
Post Systems

Quartz-fibre posts - advantages
(5)
Flexible
Easy to remove
Transluent
Fracture favourably
Cements Easily
Post Systems

Which are more retentive - parallel or tapered posts?
Parallel
Crown Techniques

What is a Nayyar Core?
Removal of 2-3mm of GP in molar teeth and filling pulp cavity with core material
Crown Techniques

What is a modified Nayyar Core?
The retention is provided by filling the pulp chamber with no root extentions
Post Systems

Increased complication of tapered posts?
Vertical root fracture
Post Systems

Why must quartz-fibre posts be kept dry?
The fibres de-laminate if wet
Post Systems

Increased complication when using active posts?
Vertical root fracture
Post Systems

Active post methods of insertion?
(2)
Pre-tapped
Self threaded
Post Systems

Advantage of serrated posts to smooth posts?
Serrated posts allow venting of excess cement
Post Systems

Cements for posts?
(5)
Zinc Phosphate
Polycarboxylate
Glass Ionomer
RMGI
Composite Resins
Post Systems

Proprietry names for composite post cements used at DDH?
(3)
RelyX ARC
Panavia EX
RelyX Unicem
Luting Cements

Proprietry name for a self etching luting cement?
RelyX Unicem
Post Systems

Contra-indication to quartz-fibre posts?
No ferrule
Post Systems

Indications for active post system?
(2)
Short roots
Curved roots
Post Systems

How may a VLC composite cement be used in a post system?
A light transmissable rod can maintain space
Post Systems

How high should a post sit above the ferrule?
2mm
Post Systems

How can a cast post be removed?
(2)
Ultrasonics
Masseran
Post Systems

What is the dowel-space?
The space left by removal of gutta-percha for the crown
Post Systems

Why and how do double taper posts change colour?
(2)
Spray cold water to regain colour
Makes removal easier
Crowns

Tool for removal of crowns?
Wham key