The parts of a periodontal instrument are the _____, the Handle, shank, working end
______, and the ______-_____.
Among all occupations in the United States, dental Highest
hygiene ranks the _____ by the Bureau of Labor Statistics
in the number of carpal tunnel syndromes cases
Risk factors for carpal tunnel syndrome in dental Repetitive, pinching
hygienists includes ________ forceful _____ during
periodontal instrumentation and sustained non-neutral
wrist positions
The average pinch force exerted during periodontal 11% 20%
instrumentation is ____% to _____% of the clinician's
maximum pinch strength
The design characteristics of instrument handles vary Reduce
greatly among instrument manufacturers.
Ergonomically designed periodontal instruments may
help _____ the prevalence of carpal tunnel syndrome
among dental hygienists and periodontists
The weight and diameter of periodontal instrument Significant
handles has ______ effects on the hand muscle load and
pinch form of clinicians performing periodontal
instrumentation
In selecting an instrument handle, there are several Weight, diameter, taper, texture
characteristics to consider: (1) _____, (2) _____, (3) ______, and
(4) _____
What are some handle selections to avoid? Small handle, heavy solid material, non tapered,, no texturing
What are some recommended handle selections? Large handle, lightweight, handle tapers near shank, raised texture
An instrument that is _______—15 g or less—is optimal for Lightweight
periodontal instrumentation
, BUSBEE Exam 4 Questions & Answers | Gehrig Chapters 8, 9 & 10 | Dental Hygiene Exam Prep
Lightweight instruments place less stress on the Greater
muscles of the hand during periodontal
instrumentation. Periodontal instruments with heavier
weight handles are associated with ______ muscle activity
An instrument with a large diameter handle (10 mm) Least
requires the a_____ amount of pinch force while
traditional smaller handle diameters (7 mm) are
associated with greater pinch force and tend to cause
muscle cramping
A _____ instrument handle, compared to a hexagon- Round, reduces
shaped handle, ____ muscle force and compression
Instrument handles that taper at the end of the handle Coupling
where it is grasped may decrease pinch force by
improving the _______ of the finger pads to the handle
(reduced slipping of fingers) during instrumentation in
the wet environment of the oral cavity
Another term for texturing is a ______ pattern. Knurling
Texturing increases the _____ ______ between the fingers Static friction
and handle resulting in reduced pinch force in the
grasp
During instrumentation, balance insures that finger Pressure
pressure applied against the handle is transferred to the
working-end resulting in ______ against the tooth.
A periodontal instrumented is said to be ______ when its Balanced
working-ends are aligned with an imaginary line that
runs vertically through the center of the handle
lengthwise (the long axis of the handle)
A is not balanced. Instrument B is balanced since the True
working-end is centered on a line running through the
long axis of the handle. (True or false)
Another term for a simple shank is a _____ shank. Straight
, BUSBEE Exam 4 Questions & Answers | Gehrig Chapters 8, 9 & 10 | Dental Hygiene Exam Prep
What is a simple shank design? a shank that is bent in one plane (front-to-back)
The shanks of most periodontal instruments are bent in One, more
_____ or _____ places to facilitate placement of the
working-end against the tooth surface.
Instruments with simple shanks are used primarily on Anterior
_____ teeth.
Another term for a complex shank is an ____ or ___ shank. Angled, curved
What is a complex shank design? a shank that is bent in two planes (front-to-back and side-to-side) to facilitate
instrumentation of posterior teeth
The crowns of anterior teeth are wedge-shaped. A _____ Simple straight
_____ shank design is adequate to reach along the crown
and onto the root surface.
An important characteristic of an instrument shank is its Strength
______.
The type and _____ of metal used in a shank determines Diameter, strength
its _____. Instrument shanks are classified as either rigid or
flexible in design.
Instrument shanks are classified as either _____ or ____ in Rigid, flexible
design.