Provisional restorations/ Labial orthodontics
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CUSTOM PROVISIONAL RESTORATIVE MATERIALSCUSTOM PROVISIONAL RESTORATIVE MATERIALS
INDIAN DENTAL ACADEMY
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CUSTOM PROVISIONAL RESTORATIVE MATERIALSCUSTOM PROVISIONAL RESTORATIVE MATERIALS
LCDR R. L. Gunning, DC, USN
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A dental prosthesis worn for various periods of time which maintains esthetics, provides masticating surfaces and protects the hard and soft tissues prior to the delivery of the definitive prosthesis.
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Provide predictable outcomeRelates functional and esthetic requirementsSatisfy biologic, mechanical, and esthetic
requirements
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Pulp protectionPeriodontal healthPositional stability
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DurableEasily removedDiagnostic aid
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Texture, color, and translucency
Color stabilityGuide to optimum
esthetics
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Convenient handlingBiocompatibilityDimensional stabilityEasily contoured and
polishedAdequate strength and
abrasive resistanceEstheticwww.indiandentalacademy.com
The transitional restoration serves as a medium of communication of many of the patient’s fears, anxieties, and deep concerns about the loss of facial appearance, “normal expression”, retention clarity of speech, and the ability to continue participation in social functions.
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Diagnostic casts and wax-upMatrix fabricationTooth preparation and
provisional restoration constructionInterim stage treatment
evaluation
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PolycarbonateCellulose acetateAluminumNickel-chromium
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PolycarbonateCellulose acetateAluminumNickel-chromium
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PolycarbonateCellulose acetateAluminumNickel-chromium
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PolycarbonateCellulose acetateAluminumNickel-chromium
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PolycarbonateCellulose acetateAluminumNickel-chromium
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AcetateSilicone puttyAlginateBaseplate wax
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Polyethyl methylacrylatePolymethyl methacrylateEpiminesBis-Acryl Composite Microfill light cured UDMA composites
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AdvantagesLow curing heatExtended working timeLow cost
DisadvantagesWear resistanceEstheticsColor stabilityUnpleasant odor
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SplintlineSnapTrimVita Temp plus
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AdvantagesWear resistanceColor stabilityPolishabilityEstheticsLow cost
DisadvantagesHigh curing heatPolymerization shrinkage (8%)Adherence to toothWorking timeOdor
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AlikeDuralayJetNeoparTabTrue Kit
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AdvantagesExothermic heatMonomer contentVolumetric shrinkage
DisadvantagesDifficult to repairLow hardness
Example is Scutan
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AdvantagesLow curing temperatureMinimal polymerization shrinkageHigh tensile strengthHigh surface hardnessImproved marginal fit
AdvantagesGood color stabilityMinimal odorHigh polishabilityAutomix
DisadvantagesHigh cost
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Chemical curedLight cured onlyMulti-phase
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LuxatempIntegrityProtemp IIProtemp Garant
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Inlay/OnlayFermitIntertempMirageCrown and BridgeTriad
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Iso-Temp ResinProvipont DC Isocyanate-
polyol/dimethacrylateUnifast LC Methyl methacrylate
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MatrixCooling ProceduresVolume of material
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Flextural Strength
0 20 40 60 80
Flextural Strength (MPa)
Jet
Protemp G
Luxatemp
Iso-Temp
Flextural strength measures materials resistance to bending and fracturing.www.indiandentalacademy.com
Volumetric Shrinkage
0 2 4 6 8
Iso-Temp
Luxatemp
Protemp G
Jet
% Volume Shrinkage
24 hours
1 hour
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05000
100001500020000250003000035000
PSI
Compressive Strength
ProTempII
Jet
Snap
Integrity
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0
1000
2000
3000
4000
5000
6000
PSI
Tensile Strength
ProTempII
Jet
Snap
Integrity
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0
2000
4000
6000
8000
10000
12000
PSI
Transverse Strength
ProTempII
Jet
Snap
Integrity
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0100200300400500600700
Kg/cm 2
Transverse Strength
Alike
Jet
Protemp
Triad
Trim
Snap
Wang RL, Moore BK, Goodacre CJ, et al. A comparison of resins for fabricating provisional fixed restorations. Int J Prosthodont 1989; 2:173-84www.indiandentalacademy.com
Temperature Change During Cure
0 5 10 15 20 25 Degrees C
Snap
Jet
ProTempII
Integrity
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Wear Resistance
0 5 10 15 20
Iso-Temp
Luxatemp
Protemp G
Jet
Microns of Wear
10,000 cycles
5,000 cycles
2,500 cycles
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Marginal Dicrepancy (Indirect)
0 50 100 150 200 Micrometers
Snap
Trim
Triad
Protemp
Jet
Alike
Wang RL, Moore BK, Goodacre CJ, et al. A comparison of resins for fabricating provisional fixed restorations. Int J Prosthodont 1989; 2:173-84www.indiandentalacademy.com
Marginal Discrepancy (Direct)
0 0.1 0.2 0.3 0.4 0.5 Millimeters
Jet
Splintline
Triad
Unifast LC
Protemp G
Provipont
Tjan AH, Castelnuovo J, Goichi S. Marginal fidelity of crowns fabricated from six prorietary provisional material. .Journal of Prosthetic Dent 1997;77:482-485www.indiandentalacademy.com
Toothbrush Abrasion Test
0 5 10 15 20 25 30 35
Volume Loss
mm3
Snap
Trim
Triad
Protemp
Jet
Alike
Wang RL, Moore BK, Goodacre CJ, et al. A comparison of resins for fabricating provisional fixed restorations. Int J Prosthodont 1989; 2:173-84www.indiandentalacademy.com
CUSTOM PROVISIONAL RESTORATIVE MATERIALS
CUSTOM PROVISIONAL RESTORATIVE MATERIALS
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Self cures to a rubbery stage and is light cured for the final set
Contains Ethoxylated Bis-GMA and Urethane dimethacrylate resin
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Bis GMA composite resin formulationCartridge dispensed3 shades: A1, A2, A3.5Precise mixing ratio every time
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2 ShadesLow heat releaseEasy to dispenseNo odorDurableGood esthetics
3 shadesLow heat releaseAutomixNo odorDurableExcellent esthetics
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Dual cureAutomixDifficult to finish and
polishStain resistance low
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Impression of Diagnostic wax-up Matrix fabrication and shade selection Place material in matrix Air and water prevents pulp damage Removal and replacement offsets polymerization
shrinkage Trim and polish with pumice
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No direct monomer exposureLess chairside time More expensiveImpression of prepared teeth
Reline prefabricated restoration
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Extrinsic Characterization allows the placement of colorants and modifiers in specific areas. Lowering the value, increasing the intensity or modifying the color, placing specific details of characterization and accenting interproximal areas are a few of the applications.
Minute stain Colored Chalk Light Cured Resin
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AdvantagesNonstress bearing
preparationsLow curing temperatureLow shrinkageNo mixingEase of use and repairNo cement required
DisadvantagesExpensiveRadiolucentNonpolishableLow strengthLow wear resistance
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Medium and fine cuttle disks, pumice, and acrilustre developed significantly smoother surfaces on composite resins than without acrilustre.
For unfilled resins, the use of acrilustre was not significantly different.
Wang RL, Moore BK, Goodacre CJ, et al. A comparison of resins for fabricating provisional fixed restorations. Int J Prosthodont 1989; 2:173-84
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Ultraviolet IrradiationElevated Water Temperature
Color Stability TestExtrinsic Stains
Wang RL, Moore BK, Goodacre CJ, et al. A comparison of resins for fabricating provisional fixed restorations. Int J Prosthodont 1989; 2:173-84
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Good marginal sealLow solubilityAdequate working timeConvenient dispensing Provisional polymer
compatibilityStrong but easily removed
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Noneugenol cements: Nogenol and DycalEugenol Cements: Temp-bond and IRM Light and self curing cements : Provilink
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Heat processed acryl resin provisionals
Polyethlene fiber reinforcement
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