You are setting up the treatment area

You are setting up the treatment area for a patient who will be receiving a Class II composite resin on tooth #5. Your tray setup includes a high-speed handpiece, low-speed motor, contra-angle attachment, #169 friction grip bur, #4 round latch-type bur,mandrel, sandpaper discs, and rubber points. 1. Which hose on the dental unit do you attach to the high-speed handpiece? 2. Which handpiece do you attach to the contra-angle attachment? 3. In which handpiece do you insert the #169 bur 4. In which handpiece do you insert the #4 round bur? 5. At what step in the procedure would the operator use the #4 bur? 6. . At what step in the procedure would the operator use the #169 bur? 7. What handpiece would the mandrel be attached to? 8. When would the disks and points be used during the procedure? 9. At the completion of the procedure, how are the dental handpieces and rotary instruments removed from the dental unit and prepared for the next procedure?

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