Questions and Answers
Where do Class V restorations occur?
Gingival 1/3 of facial & lingual surfaces of all teeth.
What are some treatment options for Class V caries? (List 5)
- Prevention & reversal methods, 2) Glass ionomer restoration, 3) Conservative composite restoration, 4) Conventional composite restoration, 5) Amalgam restoration.
What are the initial clinical procedures before cutting a tooth? (List in order, there are 3)
- Anesthesia, 2) Shade selection, 3) Isolation.
What are the steps for Class V prep? (List 4)
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Is there an ideal Class V restoration in the clinic?
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When do we use box form for a Class V restoration? Why?
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For a clinical Class V restoration, we can consider placing a bevel on what type of tooth material? Where does the bevel begin?
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Do we place an enamel bevel on a Class V amalgam restoration?
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What are the benefits of an enamel bevel?
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What do we need to consider for shade selection on a Class V?
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What is the sandwich technique?
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What burs can be used for a Class V restoration?
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Study Notes
Class V Composite Tooth Preparations
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Class V restorations occur in the gingival third of the facial and lingual surfaces of all teeth, excluding caries originating from the occlusal surface.
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Treatment options for Class V caries include prevention and reversal methods, glass ionomer restoration, conservative composite restoration, conventional composite restoration, and amalgam restoration.
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Initial clinical procedures before cutting a tooth are anesthesia, shade selection, and isolation. Checking occlusal relationships is not included in Class V procedures.
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Steps for Class V preparation involve:
- Convenience form creation
- Defect removal
- Finishing enamel margins
- Conditioning the cavity
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An ideal Class V restoration does not exist in clinical settings, although an ideal preparation is achievable in simulation clinics.
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Box form for Class V restoration is used only in dentiform due to a higher chance of shrinkage, which can create sharp angles.
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A bevel can be placed on enamel for clinical Class V restorations, starting at the dentin-enamel junction (DEJ).
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Enamel bevels are not used for Class V amalgam restorations; they are exclusive to composite restorations.
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Benefits of an enamel bevel include improved aesthetics and a reduction in microleakage.
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For shade selection in Class V restorations, consider the opacity differences between enamel and dentin. A more opaque shade should be used for dentin, while a less opaque shade is suitable for enamel.
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The sandwich technique involves using two different materials: glass ionomer bonds to the axial wall, and resin composite bonds to the surface of the glass ionomer.
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Burs suitable for Class V restoration include round No. 1 or No. 2, and pearl No. 329 or 330.
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Test your knowledge on Class V composite tooth preparations with these flashcards. This quiz covers the locations of Class V restorations and various treatment options available for Class V caries. Ideal for dental students and professionals!