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CUSTOM PROVISIONAL RESTORATIVE MATERIALS

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Title: CUSTOM PROVISIONAL RESTORATIVE MATERIALS


1
CUSTOM PROVISIONAL RESTORATIVE MATERIALS
  • LCDR R. L. Gunning, DC, USN

2
Custom Provisional Restorative Materials
LCDR R. L. Gunning, DC, USN
3
Custom Provisional Restorative Materials
LCDR R. L. Gunning, DC, USN
4
CUSTOM PROVISIONAL RESTORATIVE MATERIALS
  • LCDR R. L. Gunning, DC, USN

5
Definition
  • 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.

6
Purpose
  • Provide predictable outcome
  • Relates functional and esthetic requirements
  • Satisfy biologic, mechanical, and esthetic
    requirements

7
  • Pulp protection
  • Periodontal health
  • Positional stability

Biologic Requirements
8
  • Durable
  • Easily removed
  • Diagnostic aid

Mechanical Requirements
9
  • Texture, color, and translucency
  • Color stability
  • Guide to optimum esthetics

Esthetic Requirements
10
  • Convenient handling
  • Biocompatibility
  • Dimensional stability
  • Easily contoured and polished
  • Adequate strength and abrasive resistance
  • Esthetic

Ideal Properties
11
Psychological Implications
  • The transitional restoration serves as a medium
    of communication of many of the patients 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-up
  • Matrix fabrication
  • Tooth preparation and provisional
  • restoration construction
  • Interim stage treatment evaluation

Phases of Therapy
13
Preformed Provisional Materials
  • Polycarbonate
  • Cellulose acetate
  • Aluminum
  • Nickel-chromium

14
Preformed Provisional Materials
  • Polycarbonate
  • Cellulose acetate
  • Aluminum
  • Nickel-chromium

15
Preformed Provisional Materials
  • Polycarbonate
  • Cellulose acetate
  • Aluminum
  • Nickel-chromium

16
Preformed Provisional Materials
  • Polycarbonate
  • Cellulose acetate
  • Aluminum
  • Nickel-chromium

17
Preformed Provisional Materials
  • Polycarbonate
  • Cellulose acetate
  • Aluminum
  • Nickel-chromium

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  • Acetate
  • Silicone putty
  • Alginate
  • Baseplate wax

Matrices
19
  • Polyethyl methylacrylate
  • Polymethyl methacrylate
  • Epimines
  • Bis-Acryl Composite
  • Microfill light cured
  • UDMA composites

The selection
20
Poly R' Methacrylates
  • Advantages
  • Low curing heat
  • Extended working time
  • Low cost
  • Disadvantages
  • Wear resistance
  • Esthetics
  • Color stability
  • Unpleasant odor

21
  • Splintline
  • Snap
  • Trim
  • Vita
  • Temp plus

Poly R' Methacrylates
22
Polymethyl Methacrylate
  • Advantages
  • Wear resistance
  • Color stability
  • Polishability
  • Esthetics
  • Low cost
  • Disadvantages
  • High curing heat
  • Polymerization shrinkage (8)
  • Adherence to tooth
  • Working time
  • Odor

23
  • Alike
  • Duralay
  • Jet
  • Neopar
  • Tab
  • True Kit

Polymethyl Methacrylate
24
Epimines
  • Advantages
  • Exothermic heat
  • Monomer content
  • Volumetric shrinkage
  • Disadvantages
  • Difficult to repair
  • Low hardness

Example is Scutan
25
Bis-Acryl Composite Resins
  • Advantages
  • Low curing temperature
  • Minimal polymerization shrinkage
  • High tensile strength
  • High surface hardness
  • Improved marginal fit
  • Advantages
  • Good color stability
  • Minimal odor
  • High polishability
  • Automix
  • Disadvantages
  • High cost

26
  • Chemical cured
  • Light cured only
  • Multi-phase

Categories
27
  • Luxatemp
  • Integrity
  • Protemp II
  • Protemp Garant

Chemical Cured
28
  • Inlay/Onlay
  • Fermit
  • Intertemp
  • Mirage
  • Crown and Bridge
  • Triad

Light Cured
29
Multi Phase
  • Iso-Temp Resin
  • Provipont DC Isocyanate-
    polyol/dimethacrylate
  • Unifast LC Methyl methacrylate

30
Temperature Elevation
  • Matrix
  • Cooling Procedures
  • Volume of material

31
Flextural strength measures materials resistance
to bending and fracturing.
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Wang RL, Moore BK, Goodacre CJ, et al. A
comparison of resins for fabricating provisional
fixed restorations. Int J Prosthodont 1989
2173-84
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Wang RL, Moore BK, Goodacre CJ, et al. A
comparison of resins for fabricating provisional
fixed restorations. Int J Prosthodont 1989
2173-84
41
Tjan AH, Castelnuovo J, Goichi S. Marginal
fidelity of crowns fabricated from six prorietary
provisional material. .Journal of Prosthetic Dent
199777482-485
42
Wang RL, Moore BK, Goodacre CJ, et al. A
comparison of resins for fabricating provisional
fixed restorations. Int J Prosthodont 1989
2173-84
43
CUSTOM PROVISIONAL RESTORATIVE MATERIALS
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Iso-Temp
  • Self cures to a rubbery stage and is light cured
    for the final set
  • Contains Ethoxylated Bis-GMA and Urethane
    dimethacrylate resin

48
Integrity/Luxatemp
  • Bis GMA composite resin formulation
  • Cartridge dispensed
  • 3 shades A1, A2, A3.5
  • Precise mixing ratio every time

49
Protemp Garant
Protemp II
  • 2 Shades
  • Low heat release
  • Easy to dispense
  • No odor
  • Durable
  • Good esthetics
  • 3 shades
  • Low heat release
  • Automix
  • No odor
  • Durable
  • Excellent esthetics

50
  • Dual cure
  • Automix
  • Difficult to finish and polish
  • Stain resistance low

Provipont DC
51
Direct Technique
  • 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

52
Indirect-Direct Technique
Indirect Technique
  • No direct monomer exposure
  • Less chairside time
  • More expensive
  • Impression of prepared teeth

Reline prefabricated restoration
53
  • 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

54
Microfill Light Cured UDMA Composites
  • Advantages
  • Nonstress bearing preparations
  • Low curing temperature
  • Low shrinkage
  • No mixing
  • Ease of use and repair
  • No cement required
  • Disadvantages
  • Expensive
  • Radiolucent
  • Nonpolishable
  • Low strength
  • Low wear resistance

55
Polishability
  • 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
2173-84
56
Color Change
  • Ultraviolet Irradiation
  • Elevated Water Temperature
  • Color Stability Test
  • Extrinsic Stains

Wang RL, Moore BK, Goodacre CJ, et al. A
comparison of resins for fabricating provisional
fixed restorations. Int J Prosthodont 1989
2173-84
57
  • Good marginal seal
  • Low solubility
  • Adequate working time
  • Convenient dispensing
  • Provisional polymer compatibility
  • Strong but easily removed

Ideal Provisional Cement Properties
58
Provisional Cements
  • Noneugenol cements Nogenol and Dycal
  • Eugenol Cements Temp-bond and IRM
  • Light and self curing cements Provilink

59
Provisional Reinforcement
  • Heat processed acryl resin provisionals
  • Polyethlene fiber reinforcement

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Integrity
64
Provipont DC
65
Implant Provisionals
66
Gingival Recession
Common occurrence with subgingival
margins Generally less than one millimeter Can be
related to time patient wears the provisional
Donaldson D. Gingival recession associated with
temporary crowns. J Periodont 1973 44691-696
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