Fixed Prosthodontics and Cerec Technology

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Questions and Answers

What advantage do Cerec crowns have over traditional composite fillings?

They are easier to apply

They are cheaper upfront

They are made of metal

They offer a more natural-looking result (correct)

What is the primary role of abutment teeth in a fixed bridge?

To facilitate oral cleaning

To replace the missing teeth entirely

To provide extra dental hygiene support

To support and anchor the bridge (correct)

Which type of bridge is most commonly used when replacing multiple missing teeth?

Flexible bridge

Fixed bridge (correct)

Temporary bridge

Resin-bonded bridge

What should be considered before designing a fixed bridge?

The patient's periodontal bone health and occlusion Signup and view all the answers

Which of the following best describes a fixed bridge?

A prosthesis made up of several units joined for strength Signup and view all the answers

How many abutments are typically needed for a short bridge that replaces one tooth?

Two abutments Signup and view all the answers

What is a recommended approach for longer bridges involving more than one missing tooth?

Incorporating a double abutment for anterior support Signup and view all the answers

Which condition indicates that a bridge may be necessary?

Extensive dental damage requiring more than a crown Signup and view all the answers

A dentist is likely to recommend a bridge for a patient who _____.

is missing one or more teeth in the same arch Signup and view all the answers

In a fixed bridge, the units represent the number of _____ involved.

teeth Signup and view all the answers

The teeth that support a bridge are known as _____ or retainers.

abutments Signup and view all the answers

Which statement accurately describes a pontic?

It is an artificial tooth in a bridge. Signup and view all the answers

What denotes the main disadvantage of a resin-bonded or Maryland bridge?

It is often difficult to bond properly to the supporting teeth. Signup and view all the answers

Compared to regular restorations, inlays and onlays typically _____ natural tooth structure.

strengthen Signup and view all the answers

How does an onlay differ from an inlay?

An onlay covers more tooth structure than a three-quarter crown. Signup and view all the answers

What serves the primary function of a veneer in dentistry?

It covers imperfections for cosmetic purposes. Signup and view all the answers

What is a pontic in dental terms?

An artificial tooth replacing a missing tooth Signup and view all the answers

Which type of pontic allows for easier cleaning between the pontic and the gingiva?

Hygienic pontic Signup and view all the answers

Why are resin-bonded bridges infrequently used in dentistry?

They are not predictable and often need re-cementing Signup and view all the answers

What is a primary indication for using a fixed prosthodontic treatment like inlays or onlays?

There is not enough healthy tissue to support a regular restoration Signup and view all the answers

Which of the following statements about cosmetic pontics is true?

They are designed to resemble full teeth. Signup and view all the answers

Which type of bridge is characterized by having resin wing-like extensions?

Maryland bridge Signup and view all the answers

What is necessary to prepare before taking an impression for a resin-bonded bridge?

A small amount of the lingual side of the teeth Signup and view all the answers

What is the maximum extent of tooth destruction suitable for inlays and onlays?

Less than half the distance between cusp tips Signup and view all the answers

Study Notes

Cerec Technology

Cerec technology uses ceramic to make crowns more durable than composite fillings.
Cerec technology can save money by reducing laboratory fees.

Fixed Prosthodontic Treatment: Bridges

Bridges are used to replace missing teeth in the same arch.
Fixed Bridge
- A fixed bridge uses multiple units joined together, the number of units is based on the number of teeth missing.
- Abutments (anchor teeth) can be natural teeth or titanium cylinders placed on dental implants.
- Did You Know? A good rule of thumb for longer bridges (more than one tooth missing) is to use one abutment on the posterior and a double abutment on the anterior portion of the bridge to support the missing teeth.
Resin-Bonded Bridge
- Also known as a Maryland bridge.
- Contains a resin or porcelain pontic bonded to the lingual surfaces of the adjacent teeth with resin wings.
- Not used often because it is unpredictable and often needs re-cementing.
- Most commonly used to replace missing front teeth.

Fixed Prosthodontic Treatment: Inlays, Onlays, and Veneers

These restorations are permanent, unable to be reshaped or removed by the patient.
Inlays
- Replace missing tooth structure within the tooth.
- Used when there is not enough healthy tissue for a regular restoration but not enough damage to require a crown.
- Ideal when tooth destruction is less than half the distance between cusp tips.
Onlays
- Similar to inlays, replacing missing tooth structure.
- Cover more of the tooth than inlays.
Veneers
- Thin layers of composite or porcelain placed over a tooth for cosmetic purposes.

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Description

This quiz covers key concepts in fixed prosthodontics, including the use of Cerec technology for durable crowns and different types of dental bridges. Learn about fixed bridges and resin-bonded bridges, their structures, and clinical applications. Understand how these technologies can benefit dental treatments and patient outcomes.