#2 Instrumentation Flashcards
Identify the 3 major parts of an instrument:
Handle
Shank
Working End
Handle
Grip, tactile sensitivity (vibrations)
Shank
Attaches working end to handle
Working End
Blade, carries out function
Assessment Instruments
[Examination]
Mirrors
Explorers
Probes
Removal Instruments
[Treatment] Curets - universal/specific Scalers Finishing Implant Ultrasonic
Modified Pen Grasp - 3 Functions
Increase tactile sensitivity
Allows for movement around tooth
Applying appropriate pressure
Fulcrum - 6 Functions
Increase leverage Stability Control Prevent Injury Comfort Access
Adaptation
Correct relation of working end and tooth surface
Angulation
Angle formed by blade face & tooth surface
Lateral Pressure
Pressure of blade on tooth surface
Activation
Action of instrument performing designed task
Parallel
= side by side
Perpendicular
+ creates right angle
Well adapted instrument - Characteristics
Lower third always in contact w tooth
Closed angulation
Parallel terminal shank
Stroke types (4)
Vertical
Horizontal
Oblique
Circumferential
Exploratory Stroke
[assessment] Light grasp; To gain tactile feedback/sensitivity
Working Stroke
[removal] Increased pressure - short, well controlled, pull strokes
Components of a Blade (6)
Lower (terminal) shank Face Lateral Surfaces Back Toe or Tip Blade (cutting edge)
Scalers
Has tip (point)
Removes supragigival proximal calculus
Universal
2 functional cutting edges
Curets
Round toe
Removes supra and subgigival calculus
2 types : Area Specific and Universal
Universal Curets
[Langers]
Terminal shank is 90* to face (+)
Two functional blades/working ends
Area Specific Curet
[Gracey]
Offset angulation 70*
One functional cutting edge (lower)
Terminal Shank
Lower shank
After last bend to tip/toe
