Prosthodontics Chapter 50 Flashcards
what are examples of a fixed prosthesis
inlay, onlay, crowns, bridges and veneers
prosthesis is a
artificial replacment of a body part
dental prosthesis is a
device or appliance that replaces one or more missing teeth & structures
contraindications of fixed prosthodontics
-necessary tissues are diseased or missing
-suitable abudtment teeth are missing
-pt in poor health & or not motivated
-poor oral hygeine
-cannot afford treatment
indicstions of a fixed prosthodontic
-tissues are healthy
-pt is in good health
-skill and motivation for treatment
-1 or 2 teeth mssing in same arch
indirect restorations are created in a ___ and are ___
in a lab, permanently cemeted inplace
what material can inlays and onlays be made of
gold, porcelain or composite resin
direct veneers arw AKA
bonded veneers
what is opaquer
a substance placed on the tooth under a veneer, its not translucent or transparent and dosent let light through
3/4 crown is covering
3 surfaces of anterior, 4 of posterior
what is a soulder joint
where two adjacent points or a bridge are attached to eachother
what are the 4 parts of a 3 unit bridge
2 crowns, abudment teeth, pontic
what is a die
an exact replica of the tooth needing prosthesis
what are the 3 ginigival margin prep designs
bevel, chamfer, shoulder
bevel is a
anglenof anything but 90
shoulder is
a 90 degree angle
chamfer is
a tapered angle
core build ups are completed on
vital teeth
can a post and core be done on a vital tooth
no
when is gingival retraction completed
after the tooth is prepped, before the final impression
when placing retraction cords what direction is it placed and removed
placed clockwise. removed counter clockwise
when would you use a smaler cord
on anterior teeth where tissues are thinner snd fragile
when is it appropriate to use a two cord system
if the sulcus is wider and deeper
non impregnated cords
do not contain chemicals. move tissues by physicsl force only
what is an impregnated cord
contains an astringent to control bleeding and amount of retraction
what kind of impregnated cord would you use on a cardio patient
hemodent cord. contains aluminum chloride