What do you need to consider before doing a crown?
- perio status
- end status
- restorative status
- pt expectations and co operation
- sound core
- TSL ?
can you crown if active caries present ?
no - v bad
what should you consider restoratively ?
- can it retain core
- may need to deconstruct existing filling to access
- isolation
- ferrule
- pericervical area
what should you consider endodontic wise?
- know the pulp status
only can do crown if vital or RCT
what increases the risk of loss of vitality?
- crowning teeth
- bridge retainers
- if cracked tooth syndrome
What are the pre-op assessments that are needed?
- PA
- Vitality testing
What are the advantages of a crown? (2)
may stop fracture
may increase tooth lifespan
What are the disadvantages of a crown? (3)
caries risk
no guarantee of how long it lasts ave 5-8 years but lots of variation
loss of vitality risk causing swelling - will need RCT to treat this
what % of crowned teeth need RCT
15%
What is the life span of a crown
average 5-8 years
what do posts do?
retain a core - do not increase in strength
what height is needed for ferrule?
1.5-2mm of ferrule
What are the options for compromised anterior teeth?
- direct composite
- veneer
- consider bleaching - internal and external
- post and core
What is a key thing to remember when restoring anterior teeth?
The height of the palatal wall where it resists, the thicker the better
