dental cements,bases,liners, and bonding agents. Flashcards
tensile
pulls and stretches
compressive
pushes or compresses
shearing
slides
ductility
ability of a material to with stand forces of tensile stress without failing
galvanism
when two different metals are present in the mouth,potential for small electric shock
microleakage
saliva and debris seep between the tooth structure and restorative materials causing recurrent decay and tooth sensitivity
thermal conductivity
the ability of materials to transmite heat
thermal exspansion
the temperature changes and materals exspand and contract
viscosity
the material is the ability of liguide toflow
wettability
the ability of a material to flow over a serfice
luting
bonding or cementing together
permant luting cement
long term
temparary luting cement
short term
intermediate luting cement
6 month to a year
liner
placed in thin layer on the walls and floors of the cavity prep protects the pulp from bacteria and irritants.
base
putty or thick layer between the tooth and restoration to protect the pulp
seditive or pallative effect
may releive pain but doesnt heal
varnish
thin layer of material that is placed to seal the walls and floor of the cavity prep.
zink phosphate
mixed on glass slab, liquide is acidic and irritating to the pulp,so must be protected with base and liners.
of all cement mixing ? is the most cridical
zink phospate.
(zoe) ZINK OXIDE EUGENOL
type I noted for its seditive or soothing effect. TEMPORARY CEMENT
IRM intermediate restorative material
type III placed in patents mouth and last up to a year. TEMPORARY RESTORATION.
a ? may be used to control the setting time
glass slab
polycarboxylate
cement or base, gather material mix into homogenous mass spread over small area repeat.