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Questions and Answers
What is the primary purpose of a retainer in a dental bridge?
A cantilever bridge has its pontic supported at both ends.
False
What is the term for the artificial restoration that links the pontic to the abutment?
retainer
A bridge that has components extending on both sides of the midline is called a ______ bridge.
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Match the following types of bridges with their descriptions:
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Which bridge type allows for individual movement of the abutment?
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The pier in a bridge refers to an isolated abutment tooth.
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What component of a dental bridge connects the pontic(s) with the retainer(s)?
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Study Notes
Bridge Components
- Masticating Surface: The chewing or biting part of a bridge, made from metal or non-metal materials.
- Abutment Tooth: A natural tooth that supports and holds the bridge, prepared to receive a retainer.
- Pier: An isolated abutment tooth, where the teeth in front and behind it are missing.
- Pontic: The replacement tooth part of the bridge that restores the missing tooth's shape and function.
- Retainer: An artificial restoration that rebuilds the prepared abutment tooth and connects the pontic.
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Connector: The bridge part that connects the pontic(s) to the retainer(s). It can be:
- Rigid: A solid connection, usually with a cast or soldered joint.
- Non-rigid: Allows for some movement, like an occlusal or lingual rest.
Bridge Types
- Fixed-Fixed: Both ends of the bridge, including the pontic and retainer, are connected with rigid connectors and cemented to the abutment teeth.
- Fixed-Supported: The pontic connects to one end of the retainer with a rigid connector and the other with a non-rigid connector, allowing for movement of the abutment.
- Fixed-Free (Cantilever): The pontic is soldered and supported by one or two retainers on one end, with the other end unsupported.
- Spring Cantilever: A cantilever bridge where the pontic is on the end of a resilient curved arm. It rests on the palate, supported by an abutment away from the missing teeth (palatal spring).
- Simple Bridge: One bridge type, could be any of the previous variations: fixed-fixed, fixed-supported, fixed-free, cantilever, or spring cantilever, as well as removable.
- Compound Bridge: A combination of two or more simple bridges.
- Complex Bridge: A bridge that extends beyond the canine on one side.
- Unilateral Bridge: A bridge spanning two or three anterior teeth that does not cross the midline.
- Bilateral Bridge: A bridge with components that extend on both sides of the midline.
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Description
This quiz explores the essential components of dental bridges, including the masticating surface, abutment tooth, and pontic. It also covers various types of bridges such as fixed-fixed and fixed-supported. Test your understanding of how these components work together to restore dental function.
