OPER 8122 Study Guide - Midterm Guide: Index Finger, Complete Control, Tooth Eruption
3 Jan 2020
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Operating instruments must be under complete control - finger rests are essential. Finger rests should be stable, but located so that the operator is comfortable and maintains. Establishing a rest across the arch from tooth being treated helps avoid light. Use opposite index fingers as a rest and retractor. List or recognize two common functions of the dental mirror. Allows operator to sit upright in balanced posture while working in various segments of mouth. Mirror must be positioned properly and kept free of water and debris. Angle of mirror should allow lateral view of handpiece. Holding mirror near handle end, dentist can position the left hand out of the line of sight of the chairside assistant. List or correctly identify the portions of the hand instrument designated for use by the assistant and dentist during correct instrument transfer. Patients head should be chin down position. Patients head should be 60 to 45 degree angle to the floor.
