Provisional I Flashcards
What is the restoration of choice when a provisional crown is not needed after endo treatment
cotton pellet and GI (Cavit)
Indications for a postered provisional crown in endo treated tooth
- Appearance and speech
- maintain tooth position
- Maintain tissue position
- Stabilize RPD
The post is custom fit using
acrylic
What can you use to make your post for a temporary
- Manufactured metal posts (small, medium and large)
- Common striaght pins
- Old burs
Relining the post with resin- the resin should be in what phase
doughy
How is the crown of the provisional made
preformed shell relined with PMMA
Temp for endo tooth should be cemented with
temp-bond
Describe what should be done for the clinical try in of the cast post and core
-Inspect and modify the casting as needed
-Isolation
-Clean tooth
_Gentle placement (don’t force)
-ID and adjust binding areas
-Want seating to be passive and stable
Disadvantages of loading cement on the post
- Excess cement can confuse the orientation of the casting
- Cement is wiped off the post by contact when placed
- Trapped air creates porous cement film as it is expressed this reduces the strneth
The lentulo spiral must rotate in what direction to prevent GP removal
clockwise (when viewed from the back of the handpeice)
What is the most common post and core complication
post loosening
Other post and core complications
- Post loosening
- Root fracture
- Caries
- Perio health
- Root perforation
- Bent/fractured post
T/F Tapered posts cause more root fractures
t
A fractured root produced a _ shaped RL
tear-drop or oval
A perforated root produces a RL that is
distinct boarders and rounder form
