Podcast
Questions and Answers
What is an essential requirement for pulp health in interim fixed restorations?
What is an essential requirement for pulp health in interim fixed restorations?
Which property ensures that an interim fixed restoration maintains its position in the mouth?
Which property ensures that an interim fixed restoration maintains its position in the mouth?
Which of the following is a type of extra-coronal restoration?
Which of the following is a type of extra-coronal restoration?
What is a characteristic of esthetic requirements in interim fixed restorations?
What is a characteristic of esthetic requirements in interim fixed restorations?
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What function does the periodontium serve in the context of interim fixed restorations?
What function does the periodontium serve in the context of interim fixed restorations?
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Which of the following is NOT a mechanical requirement for interim fixed restorations?
Which of the following is NOT a mechanical requirement for interim fixed restorations?
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What is the purpose of providing interim restorations in areas visible during talking and smiling?
What is the purpose of providing interim restorations in areas visible during talking and smiling?
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Which of the following statements is true regarding the custom made temporary restoration?
Which of the following statements is true regarding the custom made temporary restoration?
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What is a primary function of a temporary luting agent?
What is a primary function of a temporary luting agent?
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Which characteristic is NOT considered a feature of an ideal provisional material?
Which characteristic is NOT considered a feature of an ideal provisional material?
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What may occur if temporary self-curing resin is applied over fresh cut dentin?
What may occur if temporary self-curing resin is applied over fresh cut dentin?
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What technique involves the use of prefabricated cellulose acetate crown forms?
What technique involves the use of prefabricated cellulose acetate crown forms?
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Which of the following materials is NOT listed as a currently available provisional material?
Which of the following materials is NOT listed as a currently available provisional material?
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What is typically the consequence of leaving a celluloid crown former in place during restoration?
What is typically the consequence of leaving a celluloid crown former in place during restoration?
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What is NOT an acceptable characteristic of provisional materials?
What is NOT an acceptable characteristic of provisional materials?
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Which temporary restoration is specifically indicated for an endodontically treated tooth?
Which temporary restoration is specifically indicated for an endodontically treated tooth?
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Study Notes
Interim Fixed Restorations (Temporization)
- Interim fixed restorations are temporary restorations used until a permanent restoration can be placed
- They serve as temporary replacements for missing or damaged teeth
- Interim restorations are designed to be biologically, mechanically, and esthetically acceptable
- Key requirements are: materials and procedures, post and core interim restorations, and cementations
Biological Considerations
- Pulp protection: temporary restorations should protect the pulp from thermal, chemical, and physical irritation
- Periodontal health: the restoration should not harm the periodontium and support good oral hygiene practices
- Occlusal and position: maintenance of proper proximal contacts and occlusal harmony is critical
- Fracture prevention: the temporary restoration must protect the prepared tooth from potential fracture
Mechanical Considerations
- Resistance to functional load: the restoration must withstand the forces applied during chewing and speaking
- Resistance to removal force: the restoration should not dislodge easily
- Alignment: proper alignment of the teeth is maintained for a comfortable and functional bite
Esthetic Considerations
- Easily contourable: the restoration should adapt to the shape of the surrounding teeth
- Color compatibility: the temporary restoration should match the color of the natural teeth
- Translucency: the restoration should allow light to pass through it, giving it a natural appearance
- Color stability: the restoration's color should not change over time
Types of Temporary Restorations
- Intra-coronal: used for inlay preparations
- Extra-coronal:
- Custom-made acrylic resin crowns and bridges
- Prefabricated metal crowns (e.g., aluminum shell, aluminum anatomic, stainless steel, Ni-chromium anatomic)
- Tooth-colored polycarbonate crowns
- Clear cellulose acetate crowns
Custom Made Temporary Restorations
- Direct Technique: Formed directly in the patient’s mouth
- Indirect Technique: Formed on a cast
- Application of self-curing resin may irritate the pulp
Characteristics of an Ideal Provisional Material
- Convenient handling
- Biocompatibility
- Dimensional stability
- Ease of contouring and polishing
- Adequate strength
- Acceptable appearance
- Acceptability to patient
- Ease of adding or repairing
- Chemical compatibility with provisional luting agents
Currently Available Provisional Materials
- Poly-methyl methacrylate resin
- Poly-ethyl methacrylate resin
- Microfilled composite resins (with AutoMix delivery system)
- Light-cured microfilled resins
Fabrication of Custom Made Temporary Restorations
- Direct technique: illustrates steps in creating the restoration directly within the mouth
Temporary Cementation
- Primary function: to seal the restoration to prevent marginal leakage and protect the tooth from harm
Ideal Properties of Temporary Luting Agents
- Seals against leakage of oral fluids
- Adequate strength – consistent with intentional removal
- Low solubility
- Obtundent effect on the pulp
- Chemical compatibility with resins used
- Convenient dispensing and mixing
- Ease of eliminating excess
- Adequate working time and short setting time
Materials for Temporary Cementation
- Zinc oxide–eugenol cements (generally the most satisfactory)
- Non-eugenol cements (using ortho-methoxy phenol, ortho-ethoxy benzoic acid, etc., as liquid components)
Steps of Cementation
- Detailed descriptions and images illustrating the steps in cementation procedures
Temporary Restoration for Endodontically Treated Teeth
- Methods and procedures specific to endodontically treated teeth are addressed.
Temporization of Laminate Veneers
- Specific methods and techniques for temporary restorations when using laminate veneers are shown.
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Description
This quiz covers the essentials of interim fixed restorations, focusing on their biological and mechanical considerations. Learn about the key requirements for these temporary restorations, including pulp protection and occlusal harmony. Test your knowledge on the materials and procedures used in interim restorations.
