Podcast
Questions and Answers
What factors affect the depth of cure of light-cured composite resin?
What factors affect the depth of cure of light-cured composite resin?
- Composite color, exposure time, and light-curing tip size
- Composite color, light intensity, and exposure time
- Distance between light-curing tip & composite surface, composite color, and light intensity
- Light intensity, exposure time, and distance between light-curing tip & composite surface (correct)
What are the advantages of composite resin over glass ionomer?
What are the advantages of composite resin over glass ionomer?
- Higher mechanical properties, faster setting & better esthetics, and better biocompatibility
- Higher mechanical properties, very low solubility, and better biocompatibility
- Higher mechanical properties, very low solubility, faster setting & better esthetics (correct)
- Lower cost, faster setting & better esthetics, and higher filler loading
What is the difference between macro-filled and micro-filled composite resin?
What is the difference between macro-filled and micro-filled composite resin?
- Macro-filled has a smooth surface & better esthetics, while micro-filled has a rough surface
- Macro-filled has a rough surface, while micro-filled has a smooth surface & better esthetics (correct)
- Macro-filled has a higher filler loading, while micro-filled has a lower filler loading
- Macro-filled has a lower filler loading, while micro-filled has a higher filler loading
The depth of cure of light-cured composite resin depends on light intensity, exposure time, and distance between light-curing tip and composite surface.
The depth of cure of light-cured composite resin depends on light intensity, exposure time, and distance between light-curing tip and composite surface.
Composite resin has higher mechanical properties and wear resistance compared to glass ionomer.
Composite resin has higher mechanical properties and wear resistance compared to glass ionomer.
Micro-hybrid composite resin has low filler loading.
Micro-hybrid composite resin has low filler loading.
What are the advantages of composite resin over glass ionomer?
What are the advantages of composite resin over glass ionomer?
What are the characteristics of nano-filled composite resin?
What are the characteristics of nano-filled composite resin?
What is the difference between macro-filled and micro-filled composite resin?
What is the difference between macro-filled and micro-filled composite resin?
Study Notes
Depth of Cure
- Light Intensity: The higher the intensity of the curing light, the deeper the cure.
- Exposure Time: Longer exposure time allows for deeper penetration of light and better polymerization.
- Distance from Light: The closer the curing light tip is to the composite surface, the more intense the light and the deeper the cure.
Composite Resin vs. Glass Ionomer
- Mechanical Properties: Composite resin exhibits higher strength and wear resistance compared to glass ionomer, making it more suitable for load-bearing restorations.
- Bonding: Composite resin uses a bonding agent to create a strong bond to tooth structure, enhancing the longevity of the restoration.
Composite Resin Types
- Macro-Filled Composite Resin: Macro-filled composites contain large filler particles, resulting in a rougher surface and a higher risk of wear.
- Micro-Filled Composite Resin: Micro-filled composites have smaller filler particles, resulting in a smoother surface and lower wear rate. These are typically used for restorations in areas that require a good esthetic result.
- Micro-Hybrid Composite Resin: Micro-hybrid composites combine both micro-filled and macro-filled resins. These are often used for a balance of wear resistance and aesthetic qualities.
- Nano-Filled Composite Resin: Nano-filled composites feature very small filler particles, resulting in excellent smoothness and a high polish. They also exhibit great wear resistance.
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Description
Test your knowledge about composite resin with this quiz! Learn about the factors that affect depth of cure, and discover the advantages of composite resin over glass ionomer. Can you tell the difference between macro-filled and micro-filled composite resin? Find out now!
