final review Flashcards
things that prevent crown from coming off
- design on the tooth preparation (resistance and retention form)
2, fit of the restoratin (spacer)
- nature of cement
most retention comes from where on prep?
implication on retention and resistance?
gingival 1/3 so i short prep can STILL have RETENTION —
but will NOT have RESISTANCE
when should corwn be built up with core?
if the prep height is less than half the crown height
ideal prep general in height
prep is 2/3 height of the final crown
implication of splinting teeth
need MORE retention
mesially tipped #31 would you prep same on mesial and distal ?
no – distal wont need as much
path of insertionM-D needs to be
parallel at contact points
post wants to __ the tooth so ___ protect the tooth from the splitting force
post
ferrule
post that is more conservative
cast post and core
retention of core from where on anterior?
on posterior?
anterior – from the post
posterior – from the pulp chamber (think bar stool)
polish provisionals?
YES
materials for provisionals
PMMA vs bis-acrly
special kit for polishing __
hybrid ones like enamic
thixotropic
flows smoothly under pressure in critical areas and remains fixed without pressure
- can put tape on treys to help
snap set means
reduces the potential for distortion during the setting process and removal from the mouth to assure a precise fitting final restoratino
