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Glass Ionomers John C Comisi, DDS, MAGD Ingredients Polyacrylic acid Calcium fluoroalumino silicate glass acid base The glass should contain strontium too! (This is important) John C Comisi, DDS, MAGD Glass Ionomers • Bioavailable – once called “bioac/ve” • Inhibits plaque & bacteria w/ fluoride and ion release • Can re-mineralize tooth structure • Can be bulk filled! • Encapsula/on makes them easier to use. John C Comisi, DDS, MAGD
Transcript of John C Comisi, DDS, MAGDd1ue90e5sp4tcv.cloudfront.net/2781/images/Asset305827_v1.pdf · EQUIA Forte...
Glass Ionomers
John C Comisi, DDS, MAGD
Ingredients
Polyacrylic acid Calcium fluoroalumino silicate glass
acid base
The glass should contain strontium too!
(This is important)
John C Comisi, DDS, MAGD
Glass Ionomers
• Bioavailable–oncecalled“bioac/ve”• Inhibitsplaque&bacteriaw/fluorideandionrelease
• Canre-mineralizetoothstructure• Canbebulkfilled!• Encapsula/onmakesthemeasiertouse.
John C Comisi, DDS, MAGD
Glass Ionomer Self Cure MaterialsRegular set working time: 5 minutes.
Fast Set working time: 3 minutes.
DO NOT DESICCATE! GI’s are hydrophilic!
USE WATER on Instrument to manipulate.
“Late” over-manipulation can reduce cohesive strength of self cure materials.
John C Comisi, DDS, MAGD
Glass Ionomer Self Cure Materials
Finishingtips:o ImmediatelyapplyaVARNISH(blowdry)oranUnfilledResin(lightcure)
o Finishwithwaterspray-superfinediamondbur,siliconepointandpolishingstrips
o Afterfinalset,sealwithaVARNISHoranUnfilledResin(lightcure)topreventinitialsensitivitytomoistureandforadditionalacidandwearresistance
John C Comisi, DDS, MAGD
IntroducingEQUIA®Forte
John C Comisi, DDS, MAGD
ImprovementstoEQUIA®Forte
EQUIA®Forte:• SamebenefitsasEQUIA®.• Duetoimprovedphysicalproperties,EQUIAForteextends
theindicationstoincludefullClassIIrestorations.• EQUIA®ForteCoatisavailableasa4mLbottleandaNEW
50unitdosepack(0.1mLeach).• Brandnewredpackaging.
John C Comisi, DDS, MAGD
EQUIA®ForteFil:GlassHybridInnovation
EQUIA® Forte
Traditional GI Structure
•HighlyreactiveFluoro-alumino-silicatefillers(<4μm):Helpstoreleasemoremetalionswhichimprovesthecross-linkingofpolyacrylicacid,toimprovephysicalproperties
•Highermolecularweightpolyacrylicacid:Cementmatrixmadestrongerandmorechemicallystable.Leadstohigherflexuralstrength.
John C Comisi, DDS, MAGD
EQUIA®ForteCoat:Innovation(contd.)
Newlyadoptedmonomer• Improvedefficiencyofpolymerization• Lowviscosityprovidesthinnerfilmlayer• Smootherfinalrestorationsurface
John C Comisi, DDS, MAGD
Day 1 3 7 14 28 56 112 252EQUIAFil 81.2 153.2 233.9 365.9 462.6 583.3 785.1 1049.4EQUIAForteFil 115.3 203.2 302.6 457.1 572.8 708.6 936.2 1243.3
%improvement 42% 33% 29% 25% 24% 21% 19% 18%
Data on file, GCC R&D
Cumula/
veFre
lease(μg/cm
2)
0
350
700
1050
1400
days
0 28 56 84 112 140 168 196 224 252
F9FASTRivaselfcureRivaselfcureHVKetacMolarQuickF9EXTRAEQUIAForteFil
FluorideRelease
John C Comisi, DDS, MAGD
SynergywithEQUIA®ForteCoat
• Thegraphaboveshowsthatwhenthecoatingisremoved(simulatingclinicalsituationthatcoatwearsoff)fromthetopsurfaceofEQUIAForteFilafter30days,thereisasubstantialincreaseinthehardnessofGIduetosecondarymaturation.
• Perin-vitrotests,coatremainsontheGIformorethan6months.
Coated(insaliva)
Non-coated(insaliva) Coated(indistilledwater)
Non-coated(indistilledwater)
Number of days immersedSource:Shimada,Yusuke,Hokii,Yusuke,etal.Poster#0054:EvaluationofhardnessincreaseofGICrestorativesurfaceinsaliva.London,UK,May2015.
John C Comisi, DDS, MAGD
John C Comisi, DDS, MAGD
Non Flow 00
67% Fill
Low Flow 03
67% Fill
WhyareS-PRGFillersImportant?
TheyFormAFilm-likeSurfaceWhichAppearsToInhibitPlaqueForma/onReleasesAndRechargesFluoride(LikeAGlassIonomer)
ThisIsA“Giomer”=StablePhaseOfGlassIonomer
Functions of Glass-ionomer phase in S-PRG Filler
1) Various Ion Release 2) Fluoride recharge
3) Acid Neutralization Effect
Beautifil II LS (Low Shrink)
─ Giomer composite with the lowest polymerization shrinkage and shrinkage stress
Beautifil II LS: Features & Benefits
• Formulated to minimize polymerization shrinkage and shrinkage stress
• Optimal consistency and handling
• High wear resistance and durability
• Optical characteristics of natural teeth: • Translucency, Fluorescence
• Ideal color stability before/after curing
• High polishability and gloss retention
• Incorporates Giomer technology clinically proven to • Release/recharge fluoride • Inhibit plaque growth • Validated in 8-year and 13-year recall
studies
• Filler load: 83 wt% (70 vol%) • Average particle size: 0.4 µm
• Volumetric shrinkage: 0.85% • Low Polymerization shrinkage
stress: 2.7 MPa
• Compressive strength: 364 MPa • Flexural strength: 117 MPa • Radiopacity: 2.0 Al:mm
**dentin = 1 Al:mm
• Contrast ratio before/after curing: Δ0.00
• Working time under ambient light: 190 sec
Beautifil II LS: Proprietary Low-shrink “Blend”
• MATRIX – 15%
• New monomer, ML-01, co-patented with MITSUI CHEMICALS
• Low-polymerization shrinkage and outstanding stability toward many physical and chemo-physical forces and influences
• MITSUI CHEMICALS—world leader in performance-driven products and technology in healthcare, automotive, food and packaging
• Brands include: ADMER (adhesive resin), SYNTEX, TAFNER (non-woven fabrics), EASY PEEL (packaging), UV+420cut (lens technology), solar energy, and intuitive human-machine interface solutions
Beautifil II LS: Mechanical Performance
Luster after tooth-brushing 12,000 times (equivalent to brushing for 6 months). Improved luster over time as compared to Beautifil II.
Source: R&D, Shofu
Beautifil II LS: An Improved Giomer
[Hours]
AbilitytoneutralizeacidSource: R&D, Shofu
