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8/4/2019 Dental Composites - Manipulation PPT
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DENTAL COMPOSITESManipulation and Properties
Stephen C. Bayne
Professor and ChairDepartment of Cariology, Restorative Sciences,
and EndodonticsSchool of DentistryUniversity of MichiganAnn Arbor, MI 48109-1078
DENT112, UNC School of Dentistry
2006, Bayne and Thompson.
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BISCO http://www.bisco.com/Caulk http://www.caulk.com/Denmat http://www.dentalmaterial.com/Dentsply http://www.dentsply.com/DMG Hamburg http://www.dentalmaterial.com/ESPE http://www.espe.de/english/GC-America http://www.gcamerica.com/
Ivoclar http://www.ivoclar.com/Jeneric-Pentron http://www.jeneric.com/Jelenko http://www.jelenko.com/Kerr Dental http://www.kerrdental.com/Kulzer http://www.kulzer.com/3M http://www.mmm.com/dental/Morita http://www.jmorita.com/SDI http://www.sdi.com.au/Shofu http://www.shofu.com/Sun Medical http://www.sunmedical.co.jp/Ultradent http://www.ultradent.com/
http:// www.iadr.com/ dmg/
MANUFACTURER WEBSITESAccessing Information
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1950 19701960 2010200019901980
OriginalDevelopment
SELF-CURED
UV-CURED
VLC-CURED
MACROFILLSelf-Cured
Composites
MIDIFILL
Composites
MICROFILLComposites
MIDIFILLComposites
Midi-HYBRIDComposites
UnbondedComposites
Acid-Etching andEnamel Bonding
Dentin-BondedComposites
3c, 2c, 1cDentin Bonding System
[QTH, PAC, Laser, LED]
COMPOSITE REFINEMENTSReviewing the last 50 years.
FLOWABLES
PACKABLES
Nano-HYBRIDCOMPOSITE
CONTROLLEDSHRINKAGEPrototypes
Mini-HYBRIDComposites
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UnfinishedComposite Surface FinishedComposite Surface
EtchedEnamel Rods
Voids atMargins
Silicate
Reinforcing FillerCrosslinkedResin Matrix
COMPOSITE
EnamelSurface
INTERFACE
INTERFACE INTERFACE
INTERFACE
INTERFACE
DEFINITION OF COMPOSITEPhases and Interfaces
50 v/o filler = 75 w/o filler
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CLASSIFICATION SCHEMESFiller (or Matrix) Classification
70% 30%
TEXTURES
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MEGAFILL MACROFILL MIDIFILL MINIFILL MICROFILL NANOFILL
Not
Shown
Not
Shown
DifferentFiller Particle
Sizes
HYBRID(MIDIFILL)
HYBRID(MINIFILL)
MixturesOf Filler
Sizes
Hetero-geneousMIDIFILL
Hetero-geneousMINIFILL
Hetero-geneous
MICROFILL
Not
Shown
Not
Shown
MixturesOf Pre-Cured
Pieces ofComposite
FILLER PARTICLESSchematic Examples
HOW DO YOU MAKE FILLERS?• Crushing, Grinding, Sieving• Vapor Phase Condensation• Sol-Gel Precipitation
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Midi-Hybrid70% 30%
100 10-1 10-3 10-4 10-5 10-6 10-7 10-8 10-9 10-1010-2
METERS
Mini-Hybrid
1 m 1 cm 1 mm1 mm 1 nm1 dm 1 Å
StandardDentistryReference
Mega-Filler
Macro-Filler
Midi-Filler
Mini-Filler
Micro-Filler
Nano-Filler
0.011 mm 0.110100 0.001 0.0001
IPS Targetfor Wear
Resistance
Nano-Hybrid
AtomicDimensionsBacteria
Dentinal TubuleWidth
NANOCOMPOSITESWhat is all this “nano” stuff all about?
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COMMERCIAL EXAMPLESHistorical vs Recent Commercial Products
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FLOW BUTTONS(area calculated in mm2)
Enamel
DentinFlowableComposite
Composite
Second Generation FlowablesBayne SC, Thompson JY, Swift EJ Jr, Stamatiades P, Wilderson M. A characterization of first-generation flowablecomposites. J Am Dent Assoc 1998;129:567-577.
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Flowable(Company)
Flow (mm 2 )
StarFlow (Danville) 208 16 aWave (SDI) 206 20 ac
FlowLine (Kulzer) 197 31 ac
Heliomolar Flow (Ivoclar) 191 13 ac
UniFil Flow (GC) 173 21 ac
Revolution F2 (Kerr) 159 17 ac
LuxaFlow (DMG) 156 6 ac
Tetric Flow (Ivoclar) 156 13 ac
Flow-It ALC (Pentron) 152 10 bc
MetaFil Flo (Sun Dental) 148 27 b
Filtek Flow (3M-ESPE) 144 10 b
Point 4 Flowable (Kerr) 140 2 b
, PBNT
, OSP
, PLP
31 5 22 3 40 722 4 17 6 31 3
24 2 19 1 39 4
26 2 19 1 44 1
24 1 15 2 33 3
23 1 34 3 61 5
39 4 37 5 55 3
38 1 23 4 45 3
38 1 35 5 52 4
41 5 47 7 72 4
54 3 53 10 73 3
51 2 35 3 58 4
Flowable(Company)
Flow (mm 2 )
StarFlow (Danville) 208 16 aWave (SDI) 206 20 ac
FlowLine (Kulzer) 197 31 ac
Heliomolar Flow (Ivoclar) 191 13 ac
UniFil Flow (GC) 173 21 ac
Revolution F2 (Kerr) 159 17 ac
LuxaFlow (DMG) 156 6 ac
Tetric Flow (Ivoclar) 156 13 ac
Flow-It ALC (Pentron) 152 10 bc
MetaFil Flo (Sun Dental) 148 27 b
Filtek Flow (3M-ESPE) 144 10 b
Point 4 Flowable (Kerr) 140 2 b
= 25 GoodWetting
29
5
5
6
5
Porosity (%)
Second Generation FlowablesProblems with flow onto bonding systems.
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• SOLITAIRE and SOLITAIRE 2 (Hereaus-Kulzer) • A.L.E.R.T. CONDENSABLE (Jeneric-Pentron) • SUREFIL (LD Caulk )•
GLACIER (Southern Dental Industries) • PYRAMID (BISCO) • PRODIGY CONDENSABLE (Kerr) • FILTEK P60 (3M) • SYNERGY COMPACT (Coltene / Whaledent) • HELIOMOLAR HB (Ivoclar-Vivadent)
PACKABLE RESTORATIVESAvailable in 2005
• HI-DENSE CONDENSABLE GI (Shofu) • FUJI IX PACKABLE (GC-America)
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Ruddell DE, Thompson JY, Stamatiades PJ, Ward JC, Bayne SC, Shellard ER. Mechanical properties and wearbehavior of condensable composites. J Dent Res 1999; 78 (Spec Issue):156, Abstr 407.
PACKABLE COMPOSITESLaboratory Mechanical Properties
0
50
100
150
200
250
300
S T R E N G T H
( M P a )
CS DTS FS DPH
MECHANICAL PROPERTY
Solitaire
ALERT
SureFil
Prodigy C
Herculite
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COMPOSITE MANIPULATIONOperative Procedure Considerations
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COMPOSITE MANIPULATIONOperative Procedure Considerations
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COMPOSITE MANIPULATIONOperative Procedure Considerations
AIR
Second increment
First increment 1.5 to 2.0 mm
AIR
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Quartz-Tungsten-Halogen (QTH) , Plasma-Arc (PAC), Lasers, Light-Emitting Diode (LED)
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Curing EquipmentFactors
ProceduralFactors
RestorationFactors
• Bulb frosting or degradation• Light reflector degradation• Optical filter degradation• Fiber-optic bundle breakage• Light-guide fracture• Tip contamination by resin buildup• Line voltage inconsistencies• Sterilization problems• Infection control barriers
• Light tip direction• Access to restoration• DISTANCE from surface• Size of tip• Tip movement• TIME of exposure
• Restoration thickness• Cavity design• Filler - amount and size• Restoration shade• Monomer ratios
FACTORS AFFECTING CUREEquipment + Procedural + Restorative Factors
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Curing EquipmentFactors
ProceduralFactors
RestorationFactors
• Bulb frosting or degradation• Light reflector degradation• Optical filter degradation• Fiber-optic bundle breakage• Light-guide fracture• Tip contamination by resin buildup• Line voltage inconsistencies• Sterilization problems• Infection control barriers
• Light tip direction• Access to restoration• DISTANCE from surface• Size of tip• Tip movement• TIME of exposure
• Restoration thickness• Cavity design• Filler - amount and size• Restoration shade• Monomer ratios
FACTORS AFFECTING CUREEquipment + Procedural + Restorative Factors
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WAVELENGTH (nm)
UV Visible IRCQ
INTRAPULPAL HEAT,GINGIVAL IRRITATION
I N T E N S
I T Y
U V b a n d - p a s s
f i l t e r
I R b a n d - p a s s
f i l t e r
• Power Supply• Cycle Timer (Circuit Board)• Bulb / Reflector• Filter • Fan• Fiber-Optic Train
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Check Fiber Optic Tips
Check Bulband Reflector
Clean Reflector
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180-1100mW/cm2
WAVELENGTH (nm)
Visible CQ
I N T E N S I T
Y
LED LIGHTSLight Emitting Diodes
Advantages:
Matched to CQ peak.Reduced “I” needed.Easy to clean.Totally quiet; No fan.Small; Handy.No wires.
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LOWCOST
FirstGeneration
LED CURING LIGHTS[Output = LED power; #; focusing]
Visible Light LED: Company: Price: # LEDs:
Elipar FreeLight 3M ESPE $ 999 19NRG Dentsply/Caulk $ 949 7Ultra Lume LED 1 Ultradent $ 899 ($699)
Ultra Lume LED 2 Ultradent $1299 ($999)CoolBlue Dental Systems $1195Nova Curing Techologies $1495 7GC e-Light GC America $1495
Allegro Denmat - - - - - 1Elipar FreeLight 2 3M ESPE $1495 1LEDemetron Kerr - - - - - 1Ultra-Lume LED 5 Ultradent - - - - - 5the CURE Spring Health Products $ 499 1SmartLite iQ Caulk/Dentsply - - - - - 1Radii SDI $ 695 1Cool Blue Wand Milestone - - - - - 1
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Significantmaterial
removal
Originalrough
surface
COARSEfinished
New surfaceapproximates
abrasive size
Polished
Smearing andburnishing to
smoothen surface
FINEfinished
Fine grooves
FINISHING AND POLISHING
TWO CRITICAL FACTORS for Finishing and Polishing:(1) Abrasive size(2) Filler particle size
SURFACE ROUGHNESS = Ra Average up-and-down geometry =
20 mm 2 mm 0.2 mm
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0 25 50 75 1000
2
3
4
5
CONVERSION (%)
S
H R I N K A G E ( % )
1
65%Conversion
50% Filler25% Bis-GMA25% TEGDMA
Flow
Bond Stretching(External Contraction)
Porosity Formation(Internal Contraction)
POLYMERIZATION SHRINKAGE
15-25% =Gellation
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Curing Light
2. SHAPE-OF-CURE
0 mm
1
2
3
4
3. DEPTH-OF-CURE
Z100
1. DEGREE-OF-CONVERSION
65%
25%
45%
CHEMICAL PROPERTIES
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COMPOSITE WEAR
5 Wear Types:
CFA = food bolus wearOCA = impact wearFCA = sliding wear
PCA = sliding wearTBA = abrasive wear
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100% 1st Molars
2nd Molars
2nd Premolars
1st Premolars
FOOD BOLUS
60%
40%
30%
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Wilder AD, May KN, Bayne SC, Taylor DF, Leinfelder KF.17-year clinical evaluation of UV-cured composite resinsin posterior teeth. J Dent Res 1996; 75: 173, Abstr 2100.
100
200
300
1 2 5 10 20
TIME (years)
W E A R ( C
F A ,m m
)R2 = 0.99
ENAMEL
MACROPROTECTION
MICROPROTECTION
LATEWEAR
MIDDLEWEAR
EARLYWEAR
SC Bayne
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???• Degradation by esterase, bleaching, …. • Generation of formaldehyde and water.
BIOLOGICAL PROPERTIESVery poorly understood.
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THANK YOU