Chapter 10 and 11 Flashcards
restoration that is constructed outside of the mouth
indirect restorations
cannot be removed from the oral cavity
fixed restorations
what are the two ways fixed indirect restorations can be classified
- by the amount of tooth structure they restore
- by the material from which they are made
intracoronal (inside of the crown)
restore pits/fissures
do not restore cusps
inlays
replace more tooth structure (include one or more cusps)
may cover entire occlusal surface
used when likelihood of cusp fracture is high
onlays
restoration that is placed on the facial surfaces of anterior teeth
veneers
use bonded composites and require minimal structure removal
direct veneer
requires preparation of the tooth and placement of a porcelain
indirect veneer
used when a significant amount of structure is lost
covers entire crown
can be all ceramic/pocelain; gold; porcelain fused to metal
crowns
replaces missing tooth or teeth
bridge
replacement tooth part of bridge
pontic
crowned teeth holding Pontic in place
abutment
fragile and great esthetics
porcelain
aka porcelain bonded to metal
strong
look ok
ceramometal
what are the 8 steps to constructing an indirect restoration
- diagnosis
- treatment planning
- restoration design
- preparation
- impressions
- fabricate temp
- lab
- cementation
metals that are a combination of several elements
alloys
a measure of the ability of a material to be stretched before it breaks
elongation
process that pushes metal against the tooth to close gaps between the tooth and the casting metal
burnishing
classified on lack of chemical reactivity
gold, platinum, palladium
noble metals
classified based on cost
include the noble metals and silver
precious metals
what is the percentage for parts per in gold
100
what is the carat for parts per in gold
24
what is the fineness for parts per in gold
1000 (75% = 18 carat = 750 fine)
percent is related to what
fineness
have the same requirements as alloys for all-metal restorations except elongation
alloys for ceramometal restorations
alloys for cermometal restoration have to withstand very high what
temperatures
what are the types of cermometal alloys
noble alloys and nonprecious alloys
gold, platinum, and palladium are what
noble alloys
nickel and chromium are what
nonprecious alloys
most biocompatible metal
main component of dental implants
titanium
hard, brittle, glassy polymers
acrylic resins
can be molded under heat
thermoplastic material
what are the three acrylic resin systems used in dentistry
- cold-cure/chemically activated acrylic resins
- heat activated acrylic resins
- light-activated and dual cure
liquid/polymer system
liquid: methyl methacrylate
powder: polymathy methacrylate resin + benzoyl peroxide
cold-cure/chemically activated acrylic resins
no chemical activator and longer working time
heat activated acrylic resins
very expensive so not very popular
light-activated and dual care
what are the teeth in a complete denture made of
acrylic resin or porcelain
what is the denture base constructed on
master cast
do mandibular or maxillary partial dentures typically lack retention
mandibular
partials can be what
all acrylic and retained by metal
