Podcast
Questions and Answers
Composite materials are done with minimal loss of tooth ______.
Composite materials are done with minimal loss of tooth ______.
structure
The best treatment option for teeth with extensive defects and esthetics is a ceramic ______ or crown.
The best treatment option for teeth with extensive defects and esthetics is a ceramic ______ or crown.
onlay
Isolation of the operating field is ______ for the success and longevity of direct restorations.
Isolation of the operating field is ______ for the success and longevity of direct restorations.
paramount
Failures in composite restorations can occur due to improper tooth ______.
Failures in composite restorations can occur due to improper tooth ______.
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Indications for composite restorations include Class I, II, III, IV, V, and VI ______.
Indications for composite restorations include Class I, II, III, IV, V, and VI ______.
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A contraindication for composite restoration is the inability to obtain ______.
A contraindication for composite restoration is the inability to obtain ______.
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One of the advantages of composite restorations is their excellent ______.
One of the advantages of composite restorations is their excellent ______.
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Operator ______ is a factor affecting the lifespan of a direct esthetic restoration.
Operator ______ is a factor affecting the lifespan of a direct esthetic restoration.
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Low thermal conductivity is a property of ______ materials.
Low thermal conductivity is a property of ______ materials.
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One disadvantage of composite restorations is poor marginal and internal cavity ______.
One disadvantage of composite restorations is poor marginal and internal cavity ______.
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Prior to patient scheduling, a complete ______ must be obtained.
Prior to patient scheduling, a complete ______ must be obtained.
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Profound anesthesia contributes to a more comfortable and ______ procedure.
Profound anesthesia contributes to a more comfortable and ______ procedure.
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Shade selection is influenced by the drying of ______, which can affect the perceived shade.
Shade selection is influenced by the drying of ______, which can affect the perceived shade.
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Contamination of etched enamel and dentin by saliva reduces ______ strength.
Contamination of etched enamel and dentin by saliva reduces ______ strength.
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Using a ______ during dental procedures helps to isolate the operating site.
Using a ______ during dental procedures helps to isolate the operating site.
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Composite restorations require a proper ______ technique for effective bonding.
Composite restorations require a proper ______ technique for effective bonding.
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Study Notes
Composite Materials
- Minimal tooth structure loss, little to no discomfort, short operating time, and modest patient expense compared to indirect restorations.
- Best option for extensive defects and aesthetic concerns: Ceramic onlay or crown.
- Factors affecting composite restoration lifespan:
- Initial caries lesion or defect nature and extent
- Treatment procedure
- Restorative material and techniques
- Operator skill
- Patient factors:
- Oral hygiene and caries risk
- Occlusion and adverse habits
Composite Restoration Success
- Strong bond is crucial for longevity.
- Isolation of the operating field is paramount.
- Failure can occur due to:
- Trauma
- Improper tooth preparation
- Inferior materials
- Poor material selection
- Patient-related risk factors
Composite Restoration Indications
- Class I, II, III, IV, V, and VI restorations
- Foundations and core buildups
- Sealants and preventive resin restorations
- Esthetic enhancements:
- Partial veneers (tooth contour modifications)
- Full veneers (diastema closures)
- Temporary or provisional restorations
- Periodontal splinting
- Luting of indirect esthetic restorations
Composite Restoration Contraindications
- Inability to obtain isolation
- Occlusal considerations related to wear and fracture
- Placement on occlusion or heavy occlusion
- Strengthening weakened tooth without assurance of patient recall
- Extending restoration to root surface (inferior marginal integrity)
- Operator factors (committed to isolation procedures)
Composite Restoration Advantages
- Aesthetics
- Conservative tooth preparation (minimal extension)
- Low thermal conductivity
- Universal use
- Adhesion to tooth
- Repairability
Composite Restoration Disadvantages
- Poor marginal and internal cavity adaptation on root surfaces (polymerization shrinkage and improper insertion)
- Marginal deterioration over time (absence of enamel bonding)
- More difficult and time-consuming placement
- Bonding requires multiple steps
- Insertion difficulty
- Proximal contact, axial contour, and embrasure establishment
- Occlusal contact, finishing, and polishing difficulty
- Costlier than amalgam
- Technique sensitivity
- Proper isolation of operating site
- Incremental placement technique
- Adherence to proper adhesive technique
- Greater occlusal wear in areas of high stress or when all tooth contacts are on composite
Initial Clinical Procedures
- Obtain and finalize complete examination, patient record review, radiographs, caries risk assessment, diagnosis, treatment plan, and informed consent prior to scheduling (exceptions for emergencies).
Local Anesthesia
- Required for many operative procedures.
- Profound anesthesia provides comfort, uninterrupted procedure, and reduced salivation.
Operating Site Preparation
- Clean the operating site with pumice slurry to remove plaque and superficial stains.
- Calculus removal is essential.
- Do not use prophy pastes containing flavoring agents, glycerin, or fluorides before composite restoration.
- Acts as contaminants
- Compromises adhesion process
Shade Selection
- Essential for all direct composite restorations.
- Determine shade before prolonged drying.
- Dehydrated teeth appear lighter due to decreased translucency.
- Reminders:
- Teeth to be matched must be clean.
- Remove bright colors from the field of view: makeup, tinted eyeglasses, bright gloves, neutral operating walls.
- View the patient at eye level.
- Evaluate shade under multiple light sources.
- Make shade comparisons at the beginning of the appointment.
- Make comparisons quickly to avoid eye fatigue.
Isolation of the Operating Site
- Critical and achieved with rubber dam, an isolation device (Isolite), or cotton rolls and cellulose wafers.
- Essential for successful adhesion.
- Contamination of etched enamel and dentin by saliva decreases bond strength.
- Contamination of composite material can negatively impact adhesion.
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Description
This quiz covers the principles of composite materials used in dentistry, highlighting their advantages like minimal tooth structure loss and aesthetic options. It also addresses factors influencing the longevity and success of composite restorations and their various clinical indications.
