Podcast
Questions and Answers
What is the primary purpose of a dental crown?
What is the primary purpose of a dental crown?
- Halt deterioration of teeth
- Threaten the health of a tooth
- Replace existing crowns which have failed
- Improve the strength or appearance of teeth (correct)
How are dental crowns typically bonded to the tooth?
How are dental crowns typically bonded to the tooth?
- Through computer technology
- By dental cement (correct)
- By direct fabrication inside the mouth
- Using intense heat
What allows the use of strong restorative materials in dental crown fabrication?
What allows the use of strong restorative materials in dental crown fabrication?
- Computer technology
- Indirect methods outside of the mouth (correct)
- Intense heat inside the mouth
- Direct fabrication inside the mouth
Which type of dental ceramics is known for its high glass content and excellent optical properties?
Which type of dental ceramics is known for its high glass content and excellent optical properties?
What process is used to produce glass-infiltrated alumina cores?
What process is used to produce glass-infiltrated alumina cores?
Which type of dental ceramics is often used for veneering stronger substructures due to poor mechanical strength?
Which type of dental ceramics is often used for veneering stronger substructures due to poor mechanical strength?
How are alumina cores without glass produced?
How are alumina cores without glass produced?
Which type of crown is indicated for posterior teeth due to aesthetic reasons and has good wear properties and dimensional accuracy?
Which type of crown is indicated for posterior teeth due to aesthetic reasons and has good wear properties and dimensional accuracy?
Which material was introduced as a cheaper alternative to gold alloys for dental crowns in the 1970s and has a silverish appearance?
Which material was introduced as a cheaper alternative to gold alloys for dental crowns in the 1970s and has a silverish appearance?
What are the clinical stages of dental crown provision, as mentioned in the text?
What are the clinical stages of dental crown provision, as mentioned in the text?
What is the primary purpose of a dental crown?
What is the primary purpose of a dental crown?
What allows the use of strong restorative materials in dental crown fabrication?
What allows the use of strong restorative materials in dental crown fabrication?
Which material is increasingly employed for crown fabrication in CAD/CAM dentistry?
Which material is increasingly employed for crown fabrication in CAD/CAM dentistry?
What is the primary reason for using silica-based ceramics in dental crown manufacture?
What is the primary reason for using silica-based ceramics in dental crown manufacture?
How are glass-infiltrated alumina cores produced for dental crowns?
How are glass-infiltrated alumina cores produced for dental crowns?
What distinguishes glass-ceramics from silica-based ceramics in dental restorations?
What distinguishes glass-ceramics from silica-based ceramics in dental restorations?
What is the advantage of glass-infiltrated alumina cores over CAD/CAM produced zirconia and alumina cores without glass?
What is the advantage of glass-infiltrated alumina cores over CAD/CAM produced zirconia and alumina cores without glass?
Which type of crown is a hybrid between an onlay and a full crown, but is not commonly prescribed due to technical difficulties and poor patient acceptability?
Which type of crown is a hybrid between an onlay and a full crown, but is not commonly prescribed due to technical difficulties and poor patient acceptability?
Which material is rarely used to make full metal crowns and is more commonly used as part of metal-ceramic crowns as bonding alloys?
Which material is rarely used to make full metal crowns and is more commonly used as part of metal-ceramic crowns as bonding alloys?
What are the clinical stages of dental crown provision, as mentioned in the text?
What are the clinical stages of dental crown provision, as mentioned in the text?
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Study Notes
Dental Crown Restoration
- Crowns are used to restore badly broken, worn, or fractured teeth, improve aesthetics, and maintain structural stability.
- Recent literature shows no strong evidence that crowns are better than other restorations for root-filled teeth.
- Clinical stages of dental crown provision include assessment, choice of restoration, tooth preparation, construction and fit of temporary restoration, tooth preparation impressions, fit of definitive restoration, short-term follow up, and long-term follow up.
- Assessment factors include patient, biological, and aesthetic factors.
- Crown restoration choices include full crowns, 3/4 and 7/8 crowns, and materials like metal, metal-ceramic, and full ceramic crowns.
- 3/4 and 7/8 crowns are a hybrid between an onlay and a full crown, but are not commonly prescribed due to technical difficulties and poor patient acceptability.
- Full metal crowns are entirely cast in a metal alloy, with noble and high-noble alloys generally based on gold.
- Gold crowns are indicated for posterior teeth due to aesthetic reasons and have good wear properties and dimensional accuracy.
- Palladium-based alloys were introduced as a cheaper alternative to gold alloys in the 1970s and have a silverish appearance.
- Base-metal alloys are rarely used to make full metal crowns and are more commonly used as part of metal-ceramic crowns as bonding alloys.
- Titanium and titanium alloys are highly biocompatible and are used in dentistry.
- Dental crown restoration involves a thorough and targeted patient history and clinical dental examination to ensure optimum condition and longevity for the proposed crowns.
Dental Crown Restoration
- Crowns are used to restore badly broken, worn, or fractured teeth, improve aesthetics, and maintain structural stability.
- Recent literature shows no strong evidence that crowns are better than other restorations for root-filled teeth.
- Clinical stages of dental crown provision include assessment, choice of restoration, tooth preparation, construction and fit of temporary restoration, tooth preparation impressions, fit of definitive restoration, short-term follow up, and long-term follow up.
- Assessment factors include patient, biological, and aesthetic factors.
- Crown restoration choices include full crowns, 3/4 and 7/8 crowns, and materials like metal, metal-ceramic, and full ceramic crowns.
- 3/4 and 7/8 crowns are a hybrid between an onlay and a full crown, but are not commonly prescribed due to technical difficulties and poor patient acceptability.
- Full metal crowns are entirely cast in a metal alloy, with noble and high-noble alloys generally based on gold.
- Gold crowns are indicated for posterior teeth due to aesthetic reasons and have good wear properties and dimensional accuracy.
- Palladium-based alloys were introduced as a cheaper alternative to gold alloys in the 1970s and have a silverish appearance.
- Base-metal alloys are rarely used to make full metal crowns and are more commonly used as part of metal-ceramic crowns as bonding alloys.
- Titanium and titanium alloys are highly biocompatible and are used in dentistry.
- Dental crown restoration involves a thorough and targeted patient history and clinical dental examination to ensure optimum condition and longevity for the proposed crowns.
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