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DEN120- module 3&4

QuestionAnswer
Placement and function of index and thumb: on the handle, to hold the instrument
Placement and function of middle finger: rests lightly on shank, helps guide working end and feeling vibrations
Placement and function of ring finger: on oral structure, stabilizes and supports hand for control and strength
Front surface of mirror: reflecting surface is on the front of the glass
Concave surface of mirror: produced magnified image
Plane (flat surface) of mirror: reflecting surface is on back surface of mirror lense, produces double image
Indirect vision use of mirror: used to see tooth surface that cannot be seen directly
Retraction use of mirror: use to hold back cheek, lip, tongue,etc
Indirect illumination use of mirror: to reflect light onto tooth surface in a dark area of mouth
Transillumination use of mirror: directing light off mirror surface and throught anterior teeth
During instrumentation, the clinician grasps mirror in their _____________ hand. nondominant
Extraoral fulcrum: stabilization point outside the pt's mouths
Intraoral fulcrum: stabilization point for the hand on a tooth surface
What is good about using transillumination? can reveal carious lesions as dark regions within enamel of interproximal surfaces of anterior teeth; will appear as dark shadows
Procedure for transillumination (light): position light until directly over oral cavity with beam perpendicular to facial surfaces of ant. teeth, patients in chin down position
Procedure for transillumination (mirror): position yourself at 12:00, hold mirror behind mandibular ant. teeth with reflecting surface parallel to lingual surfaces, look directly at teeth, not mirror
Created by: madelineyork
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