Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
12 Cards in this Set
- Front
- Back
|
when is a crown needed?
|
when it is the most conservative option
|
|
|
what tooth often requires a crown due to a fracture?
|
maxillary premolars
|
|
|
what is the purpose of a survey crown?
|
support a RPD
|
|
|
what is a RPD supported by?
|
survey crown
|
|
|
a survey crown has 2 distinct features...
|
occlusal rest
guiding plane |
|
|
questions to ask yourself for a crown...
is the tooth____? can I place a _____on _____, with ____to spare? Is there sufficient ____ ____ ___ for ____? Will restoration compromise____ ___? can the patient_____? |
stable? 1 or less mobility
verifiable margin on sound tooth with 1-2 mm to spare sound tooth surface retention adjacent tooth maintain the ototh |
|
|
sufficient tooth surface for retention is defined as
|
3-4 mm on at least 3 axial surfaces
|
|
|
does every tooth that needs a crown need a root canal?
|
no
|
|
|
what rae the 3 factors that make a pulp need root canal for crown
|
radio leasion
symptomatic pulp retention needed |
|
|
endo as a pros_____is doing endo to get more sound structure
|
expediency
|
|
|
can you put a crown on a mobile tooth?
|
yes---if stable
|
|
|
if a tooth has this, it has 2x the reistance than one without it
|
ferrule
|
