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14 Cards in this Set
- Front
- Back
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What are the 3 classifications of rotary instruments?
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Low speed - up to 20,000 rpm
High speed - 10 to 150,000 rpm Ultra speed 150,000 rpm+ |
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What part of a rotary instrument penetrates tooth structure?
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the BUR
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How are the burs held in a rotary handpiece?
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Friction grip
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Without color, how can you tell the difference between a latch and a friction grip contra-angle head of a rotrary handpiece?
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Friction grip has smaller hole
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When should you start rotating the bur?
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BEFORE contacting the tooth
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What are BURS made of?
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Tungsten Carbide
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What are the Blades of a bur called?
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Flutes
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how long is the head of a 330/331 bur?
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1.5 mm
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How long is the head of a 245 bur?
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3.0mm
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What are multi-fluted burs used for? How are they identified?
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POLISHING, red stripe
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Distance between holes on a rubber dam
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5 mm
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distance between max incisors from edge of dam? Clinical:
Preclinical |
clinical: 1 in
Pre- 1.5 in |
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Distance between mand incisors from edge of dam
Clinical Pre |
clinical - 1.5 in
Pre - 1 in |
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When isolating anterior teeth w/ rubber dam, what is the tooth range?
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Premolar to premolar
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