material placed on teeth to isolate a tooth and act as a barrier
Class I Caries
pits and fissures
Class II Caries
Interproximal of posteriors
Class III Caries
Interproximal of anteriors
Class IV Caries
INterprximal of anteriors with incisal edge involved
Class V Caries
smooth surfaces, cervical areas
Class VI Caries
decay or abrasions of chewing surfaces
protocol
steps or method to follow
basic protocol for returning a decayed tooth to a restorative level
remove caries and perform debridement (removal of damaged tissue)
prepare tooth form to receive and retain restorative materials, preparations must be made in axial wall
finish and refine tooth walls and surfaces in preparation to receive restorative material
line angle
where two surface walls meet
ex) disto-occlusal (DO) restoration
point angle
when the pulpal wall is involved with the two axial walls (three surfaces involved)
outline form
tooth cuts used to prepare the size, shape, and placement of restoration
convenience form
the cut of tooth material necessary for access to complete the cavity preparation
retention form
undercut of the walls to provide a mechanical hold of the restorative material
resistance form
preparation cuts to ensure that the restored natural tooth can withstand trauma and pressure use of the tooth
matrix
used to hold the shape and form of the original tooth wall after the tooth wall was removed in tooth preparation.
types of matrixes
tofflemire
automatrix
T-strip
Ivory retainer
V3 system/sectional matrix systems
tofflemire matrix
retainer device and assorted stainless steel bands to fit and be tightened around the tooth, provide embrasure (opening) areas with nearby teeth
automatrix
pre-sized, cone-shaped circle bands with locked ends that are tighted and locked after being placed on tooth
better visibility because it doesn't need a retainer to hold the band
T-strips
stainless steel strips shaped like a T
common in pediatric dentistry
ivory retainer/sectional matrix
mostly used on posterior teeth, does not circle tooth but instead replaces a wall
V3 system/sectional matrix systems
artificial wall set into a special forceps, carried into mouth, placed around the preparation, and released to grasp and hold matrix against the prep\
mylar matrix strips and crown forms
used with anterior or tooth-shaded materials
placed around tooth restoration until held in place by clip/finger until restoration is set/light cured
varnish
copal or resin gum in suspension of organic solvents; used to cover the cut edges of tooth surfaces and seal the dentinal tubules against leakage under all restorations except composites and resins.
liner
thin coating that provides a barrier against chemical irritation; usually varnish material or a liquid suspension of calcium hydroxide or glass ionomer
acid etchant
phosphoric acid solution used to prepare the cavity margins to provide retention for the bonding and restorative materials
bonding agent
material used to unite some restorative agents to the tooth surface and underlying materials; may be self-curing or light-cured
base
barrier against chemical irritation, will also provide thermal isolation, resist condensation forces and are able to be contoured and shaped