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Questions and Answers
What cavity classifications use a posterior matrix system?
Class II cavity classifications
What is the plural of matrix?
matrices
What type of system is used to hold a posterior matrix band in position intraorally?
Tofflemire retainer or similar systems
When placing a traditional matrix band, where is the smaller circumference of the band placed?
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What instrument is commonly used to contour the matrix band?
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What additional item is used in the Tofflemire matrix system to reestablish proper contact with an adjacent tooth?
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What can result from improper wedge placement?
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What is another term for a clear plastic matrix?
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What matrix system is an alternative to the Tofflemire retainer?
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What is another term for a thin, coated, nonstick matrix band used for posterior composites or amalgam restorations?
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What part of the Tofflemire matrix retainer tightens the band securely within?
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A wedge is most commonly placed from the _____ side into the interproximal space.
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Where is the slotted surface of a Tofflemire retainer always positioned?
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When is the celluloid band placed during an anterior composite resin restoration?
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What matrix system is best for primary teeth?
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Study Notes
Cavity Classifications Using Posterior Matrix Systems
- Class II, III, and V cavities in posterior teeth
Plural of Matrix
- Matrices
Posterior Matrix Band Retention
- A "wedge" is used to hold a posterior matrix band in position intraorally.
Matrix Band Placement
- The smaller circumference of the band is placed gingivally.
Instrument for Matrix Band Contouring
- A contouring instrument is used to contour the matrix band.
Tofflemire Matrix System
- A wedge is used in the Tofflemire matrix system to reestablish proper contact with the adjacent tooth.
- The Tofflemire matrix retainer is tightened securely within the band loop.
Wedge Placement
- Improper wedge placement can cause open contacts or overcontoured restorations.
Clear Plastic Matrix
- Another term for a clear pastic matrix is mylar.
Tofflemire Alternative
- The universal matrix system is an alternative to the Tofflemire retainer.
Thin, Coated Matrix Band
- Another term for a thin, coated, nonstick matrix band used for posterior composites or amalgam restorations is a "clear" matrix.
Wedge Placement
- A wedge is most commonly placed from the buccal side into the interproximal space.
Tofflemire Retainer Placement
- The slotted surface of a Tofflemire retainer is always positioned facially.
Celluloid Band Placement
- A celluloid band is placed during an anterior composite resin restoration before placement of the initial composite resin increment.
Best Matrix System for Primary Teeth
- The universal matrix system, or other "clear" matrix systems are generally considered the best for primary teeth.
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Description
Explore the essential concepts and applications of posterior matrix systems used in dental procedures. This quiz covers the various types of matrices including the Tofflemire matrix retainer, their functions, and proper placement techniques to ensure effective dental restorations.
