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Mercury,Esthetics !!!
Amalgam
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Composite
Fillers, Shrinkage !!!
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GIC
Fluoride release,adhesionvs Wear !!!
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Wilso
n 1970Glass IonomerCement
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CONBINES THE ADVANTAGES OF BOTH GLASSIONOMER CEMENTS AND COMPOSITE
RESTORATIONS
i.e. BONDING TO DENTIN, FLUORIDE RELEASEAND NO POLYMERIZATION SHRINKAGE + BETTER
ESTHETICS,
BONDING TO ENAMEL AND BETTER WEARRESISTANCE.
SANDWICH TECHNIQUE
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Resin reinforced GIC
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Resin modified glass ionomers
They contain the samecomponents as traditionalGICs, but have a resin
material added to provide
strength
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Resin modified glass ionomers
Two
co
mpo
nent system Initiators
Acid base reaction
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Compomers
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Compomers
Poly acid modified resins
They are essentially resin compositeswhere the resin monomer is modifiedto contain acidic functional groupscapable of participating in an acid
base reaction after the polymerizationof the resin molecule has taken place
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Compomers
Single component system,where resin polymerization
takes place after curingthen a glass ionomer
reaction takes place in thepresence of saliva.
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Amalgam
Composite
GIC
Resin reinforced GIC
Compomers
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Caries risk
assessmentRisk factors and indicators
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A complete series offinal restorations shouldnot be placed for a
patient in whom there isstill active disease
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Caries activity testingTo predict cariogenic potential
They are most useful forpatient motivation and for
monitoring patients progress
after proper oral hygienelevels have been attained
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Lactobacilli are more related tomisuse of CHO, while highnumbers of S. mutans willreflect the patients difficulty inmaintaining oral hygiene.
Lactobacilli are not sensitive tochlorhexidine
DeSoet, Dental Update,1998
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Modified Snyder testIt is a colorametric testthat measures the amount
of acid formed in acarbohydrate medium bymicroorganisms in saliva
(acidogenic potential)
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Bromcresol green
Blue green Yellowacid
pH 4.7 - 5
pH 4.2 4.6
pH < 4
positive
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marked + veModerate - ve + ve
slight - ve - ve +ve
- ve - ve - ve - ve
24 h 48 h 72 h
Caries activity
Modified
Snydertest
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Caries detecting Dye
1% acid red solutionin propylene glycol
Bonds t
odenaturatedcollagen
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Air abrasion
Aluminum Oxide Particles
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Isolation & drying.
Application of C.D.
After 10 sec, wash. Remove stained tissue.
Repeat staining.
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artAtraumatic Restorative
Treatment
Alternative restorative
treatment
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Frencken 1994
Fuji IX is betterthan Fuji III
ART
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