Dr. Conn 1 Flashcards
1
Q
Endo treated tooth: majority of failures due to
A
- inadequate restoration followed by tooth loss due to perio
- few teeth are lost due to endo
2
Q
Success rate of treatment for general dentists vs endo?
A
- General=65-75%
- Endo=70-95%
3
Q
Orthograde contamination
A
- Failure mechanism
- contamination via leakage of oral fluids apically within root
4
Q
Coronal Sealing
A
- done as soon as possible after root canal is finished
5
Q
Factors to place a post in a tooth
A
- position of the tooth in the arch
- occlusion
- function of the restored tooth
- amount of remaining tooth structure
- canal configuration
6
Q
reasons for placing a post
A
- old Assumption:
- strengthen the root of a endo treated tooth
- Todays assumption:
- retain the core buildup material
- reinforce remaining coronal tooth
7
Q
Post types
A
- Custom cast posts
- Pre-fabricated posts
- metallic posts
- non-metallic posts (tooth colored)
8
Q
What does increased post length result in?
A
- Results in:
- increased retention
- restistance to fracture
9
Q
Posts: most Retention to least
A
- Most to least retention
- active posts
- parallel posts
- tapered post=least
10
Q
Posts: Most conservative to least
(of tooth structure)
A
- Most
- tapered
- parallel
- active
- least
11
Q
How to choose the right post
A
- most conservative post
- adequate rentention
- without compromising fracture resistance of the root
12
Q
Does a post strengthen a tooth?
A
it Depends
- Fracture resistance
- of the root descreases with post placement
13
Q
Indications for custom cast post and core
A
- multiple posts and cores
- cores for smaller teeth
- changing the orientation of the core to post
14
Q
Parallel Posts characteristics
A
- Passive parallel posts
- intermediate
- retention
- conservation
- intermediate
15
Q
indications for Parallel posts
A
- parallel canal prep
- large diameter root at the tip of the post
- need increased retention
