Advantages of Conservative Tooth Preparation

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Questions and Answers

What is the limitation of the preparation?

Cementum only

Dentin only

Enamel only (correct)

Enamel and dentin

Which surface remains intact during the preparation?

Occlusal surface

Labial surface (correct)

Palatal surface

Lingual surface

What is one of the advantages of this preparation?

Conservative (correct)

Unesthetic

Invasive

Painful

Why is anesthesia not needed in this preparation?

Because it is within enamel Signup and view all the answers

What is another advantage of this preparation?

Esthetic Signup and view all the answers

What is the primary focus of fixed prosthodontics?

Restoring natural teeth Signup and view all the answers

What is the bonding process in dentistry related to?

Restorative and adhesive dentistry Signup and view all the answers

How many types of materials are used for RBB?

Three Signup and view all the answers

What is one of the materials used for RBB?

Metal Signup and view all the answers

Which of the following is NOT a material used for RBB?

Glass Signup and view all the answers

What is the main component of adhesive resin cements?

4-META Signup and view all the answers

What is the purpose of heating the alloy in precious alloys?

To promote the bond between 4-Meta and copper rich deposit Signup and view all the answers

What is the name of the adhesive resin cement containing 4-META?

C & B Metabond Signup and view all the answers

What is the result of heating precious alloys?

Formation of a copper rich deposit Signup and view all the answers

What is the brand of the adhesive resin cement containing 4-META?

Parkell Signup and view all the answers

What was the problem with initial all-ceramic, two-retainer RBFPDs?

High incidence of unilateral framework failure Signup and view all the answers

What happened to the pontic when unilateral framework failure occurred?

It bonded to a single retainer in a cantilevered fashion Signup and view all the answers

What type of ceramic was used to make the all-ceramic RBFPDs?

Glass infiltrated alumina ceramic Signup and view all the answers

What happened to the all-ceramic RBFPDs made from In-Ceram within the first years of clinical service?

They showed a high fracture rate Signup and view all the answers

What was the design of the all-ceramic RBFPDs that showed a high fracture rate?

Two-retainer design Signup and view all the answers

What is one type of structural damage that can occur in a dental restoration?

Shade match deterioration Signup and view all the answers

What can cause shade match deterioration in a dental restoration?

Natural tooth discoloration Signup and view all the answers

What is another possible cause of shade match deterioration?

Porcelain changes Signup and view all the answers

What type of dental restoration is referred to as a 'Cantilever'?

Single retained bridge Signup and view all the answers

Study Notes

Preparation and Advantages

Preparation is limited to enamel and the labial surface remains intact
Advantages include:
- Conservative (within enamel)
- No need for anesthesia
- Esthetic
- Fixed prosthodontics
- Bonding

Materials for RBB

Three different materials can be used:
- Metal
- Ceramic
- Fiber-reinforced

Adhesive Resin Cements

Contain 4-META, such as C & B Metabond (Parkell)
Heating the alloy (precious Alloys) promotes the bond between 4-Meta (resin cement) and copper-rich deposit formed by heating precious alloys

Potential Complications

Structural damage
Shade match deterioration, which can result from:
- Natural tooth discoloration
- Porcelain changes

Design and Retention

Single retained “Cantilever” or two retained RBB designs are possible
Two-retainer all-ceramic RBBPDs demonstrated a high incidence of unilateral framework failure, leading to a cantilevered design
All-ceramic RBFPDs made from glass-infiltrated alumina ceramic In-Ceram have a high fracture rate within the first years of clinical service, particularly with two-retainer designs

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Description

This quiz discusses the benefits of a tooth preparation method that only involves the enamel, preserving the labial surface intact.