DHY 150 Probe & Instrumentation Stroke (FPI M11) test questions and answers.

DHY 150: Probe &
Instrumentation Stroke (FPI:
M11) test questions and
answers
What are the characteristics and purpose of the instrumentation strokes?
[FPI: M11]
•Used to assess the character of the tooth surface (locate calculus)

•Used to remove plaque biofilm and calculus deposits from tooth surfaces
the act of moving the working end of a periodontal instrument against the
tooth surface [FPI: M11]
Instrumentation stroke
Working end of a curet is positioned apical to a calculus deposit in
preparation for [FPI: M11]
a calculus removal stroke
The working end of an explorer used to make [FPI: M11]
a series of light, flowing instrumentation strokes over the tooth surface
for detection purposes
Why should the cutting edge of a curet or sharp point of an explorer not
come in contact with the base of a sulcus or periodontal pocket?
would injure the JE


(Soft epithelial tissue forms the base of a gingival sulcus or periodontal
pocket)
Name the three stroke directions
(1) Vertical
(2) Oblique
(3) Horizontal
How many directions can strokes be made?
3 directions

, What are multidirectional strokes?
all 3 strokes combined




Instrumentation strokes are made in a coronal direction, away from the
soft tissue base of the sulcus or pocket
Vertical stroke




Vertical stroke
•coronal direction
•Anterior: Facial, lingual, & proximal surfaces
•Posterior: mesial & distal surfaces




Oblique Stroke (Diagonal)
•coronal direction away from the soft tissue base of sulcus or periodontal
pocket
•Most commonly: facial and lingual surfaces of Posterior teeth