DCP- FPD- Dental Cast and Die Materials

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Questions and Answers

What is the purpose of a working cast in dentistry?

To capture the accurate impression of the oral cavity

To make metal restorations like crowns and inlays

To provide a positive reproduction of the prepared tooth for wax pattern finishing

To replicate the prepared teeth, ridge areas, and other parts of the dental arch (correct)

What is the main factor determining the accuracy of a cast-and-die system?

The temperature and humidity of the working environment

The accuracy of the impression or optical capture (correct)

The type of gypsum material used

The skill of the dental technician

What is the purpose of an interocclusal record in dentistry?

To create a positive reproduction of the prepared tooth for wax pattern finishing

To record the occlusal relationship between the maxillary and mandibular teeth (correct)

To replicate the prepared teeth, ridge areas, and other parts of the dental arch

To make metal restorations like crowns and inlays

What is the purpose of a master cast in dental procedures?

To replicate the prepared teeth, ridge areas, and other parts of the dental arch Signup and view all the answers

What is a requirement for dental casts?

Exact reproduction of surfaces Signup and view all the answers

Which type of gypsum produces acceptable surface details for fixed prosthodontics?

Type IV and V Signup and view all the answers

What is a characteristic of resin die materials compared to gypsum?

Greater abrasion resistance Signup and view all the answers

When are flexible die materials used?

For interim restorations Signup and view all the answers

What are the essential laboratory steps for making dies?

Vacuum mixing, trimming, and creating interocclusal records Signup and view all the answers

Which concepts are important in occlusal adjustment?

Canine guidance and group function Signup and view all the answers

What are elastomeric materials, such as polyvinyl siloxane (PVS), used for?

Bite registration Signup and view all the answers

What is essential for stability in big cases?

Hard baseplate wax and acrylic resin Signup and view all the answers

What can be used for digital design, scanning, and milling for same-day implant restorations?

Virtual definitive cast-and-die system Signup and view all the answers

What is the purpose of discernible unprepared tooth structure in dental casts?

Accurate duplication Signup and view all the answers

What may resin die materials experience during polymerization?

Minor shrinkage Signup and view all the answers

Which materials are similar to heavy bodied silicone or polyether impression materials?

Flexible die materials Signup and view all the answers

Study Notes

Dental Cast and Die Materials and Techniques

Requirements for dental casts include exact reproduction of surfaces, precise articulation, accurate duplication without bubbles or voids, and discernible unprepared tooth structure.
Gypsum is an inexpensive die material available in five forms, with types IV and V producing acceptable surface details for fixed prosthodontics.
Resin die materials offer greater abrasion resistance than gypsum, but are more expensive and may experience minor shrinkage during polymerization.
Flexible die materials are similar to heavy bodied silicone or polyether impression materials and are used for interim restorations, indirect composite resin inlays, and onlays.
Laboratory steps for making dies involve vacuum mixing, trimming, and creating interocclusal records for maximum intercuspation and centric relation.
Canine guidance and group function are important in occlusal adjustment, with conformative occlusion and reorganized occlusion being key concepts in restoration.
Elastomeric materials, such as polyvinyl siloxane (PVS), are used for bite registration, with hard baseplate wax and acrylic resin being essential for stability in big cases.
After mounting the maxillary and mandibular casts, a virtual definitive cast-and-die system can be used for digital design, scanning, and milling, allowing for same-day implant restorations.

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Description

Test your knowledge of dental cast and die materials and techniques with this quiz. Explore topics such as gypsum and resin die materials, flexible die materials, laboratory steps for making dies, occlusal adjustment, elastomeric materials, and digital design and milling for implant restorations.