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338670
Pulp - Linings
Description
Restorative dentistry Mind Map on Pulp - Linings, created by aahughes on 07/11/2013.
No tags specified
restorative dentistry
restorative dentistry
Mind Map by
aahughes
, updated more than 1 year ago
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Created by
aahughes
almost 11 years ago
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Resource summary
Pulp - Linings
Chemical attack, Thermal discomfort, Galvanic effects
CHEMICAL ATTACK
Constituents of certain restorative materials
Acrylic Resin
Acids in certain dentine bonding agents
Residual acid from acidogenic bacteria left behind
THERMAL SHOCK
Polymerisation exothermof some rest materials
Such as resin comp or VLC glass Polyalkenoate
Light curing unit
Hot/cold food and drinks
Cavity prep produces heat (use water as coolant)
GALVANIC EFFECTS
rest of dissimilar materials in close proximity
with inadequate insulation
Sets up an electrolyte cell (electrolytes-saliva)
Glavanic pain - kit lat and amalgam/gold opposing amalgam
CAVITY PREP
Insults the pulp - results in increased inflam cell infiltrate
Prep results in 'smear layer' being left
occludes the dentinal tubules with: bacteria,collagen,hydroxapatite
IDEAL PULP PROTECTION
non toxic/irritant, bacteriostatic
Gives good coronal seal
Thermal/electrical insulator
Strength to withstand rest placement
Radiopaque
compatible with rest materials
Obtudant (soothing) to the pulp
LINING MATERIALS
Calcium Hydroxide
Zinc oxide eugenol
zinc polycarboxylate
zinc phosphate
glass polyalkenoates
CALCIUM HYDROXIDE
high pH - initially irritates the pulp: reactionary dentine laid down
High pH - bacteriocidal
Thermal/electrical insulator
radiopaque and compatible with materials
Insufficient strength to condensing
not adhesive - no coronal seal
ZINC POLYCARBOXYLATE
Poly F
High molecular weight reduces penetration to tubules
only mildly irritant to the pulp
Contains fluoride - bacteriostatic
Good strength for material placement
good insulator
Contains zinc - radiopaque
ZINC OXIDE AND EUGENOL - KALZINOL
Slightly irritant to pulp
Bacteriocidal
Thermal/electrical insualtor
eugenol - obtudant
not adhesive - no coronal seal
Not compatible with resin comp
ZINC PHOSPHATE
Low pH - highly irritant to pulp
Thermal/electrical insulator
radiopaque, bacteriocidal
Not obtudant
GLASS POLYALKENOATES
Vitrebond - mildly irritant to pulp
contains fluoride
good strength and coronal seal
compatible with resin
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