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8 Cards in this Set
- Front
- Back
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What is a class I preparation?
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Class I preparation is any preparation limited to the pits and fissures of a tooth. Can include occlusal surfaces of posterior teeth or the pits on the lingual of anterior teeth or the buccal pits of posterior teeth
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On a class I restoration how do you start?
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Start in the distal pit and follow central groove into lingual and buccal grooves
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How should you hold your bur to ensure convergence of the buccal and lingual walls?
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hold the bur parallel to the long axis of the tooth
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How close can you get to the incisal edge of the tooth before you have to diverge the wall?
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2 mm
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marginal ridge
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ridge that runs along the mesial or distal border of the occlusal surface
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The bur used for class I prep is what shape?
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Pear-shaped 0.8 mm tip
working end is 3 mm long |
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What axis of the tooth do you place your bur parallel to?
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parallel to the long axis of the tooth
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How large should your isthmus be?
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1/4-1/3 the intercuspal distance
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