dental hygiene instrumentation

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Instrument handles

weight: lightweight handles place less stress on the muscles of the hand and fingers

diameter- small diameter handles are (3/17inch) are difficult to hold and tend to cause muscle cramping

large diameter handles (3/8inch) are easier to hold and decrease muscle strain

texture: aka knurling

handles with no texturing decrease control of the instrument and increase muscle fatigue

handles with bumpy texturing maximize control of the instrument and reduce muscle fatigues
mirror use to stop fogging of the reflecting surface:

1. warm the surface against the patients buccal mucosa

2. ask the patient to breath thru the nose

3. wipe the reflectiing surface with a commercial deffoging solution

4. wipe the reflecting surface with gauze moistened with mouthwash
use of dental mirror

indirect vision- view a tooth surface of intraoral structure that cannot be seen directly

retraction- used to hold patients cheek, lip, tongue, so that clinician can view tooth surface

indirect- use mirror surface to reflect light onto a tooth surface in dark area of mouth

transillumination- is the tech, of directing light off the mirror surface and thru the anterior teeth
finger placement and function
index and thumb- on the instrument

middle finger- rests lightly on the shank: helps guide the working end
- ring finger- on oral structure/tooth surface- stabalizes the hand control and strength
- little finger- relaxerd manner- has no function in the grasp
Instrument identification
- handle- holding the instrument
- shank- rod-shaped length of metal located between the handle and the working -end
- working end- does the work f the inst. working end begins where the instrument shank ends
what is the definiton of ergonomics?

is the science of adjusting the design of tools, equipment, tasks and environment for safe, comfortable and effective human use
seat positioning
- 1. neutral neck position 0-15degrees
- 2. neutral back position 0-20 degrees
- 3. neutral shoulder position- shoulders in horizontal line
- 4. neutral upper arm position- upper arms hang parallel to the long axis of torso 0-20degrees
- 5. neutral forearm position- 60-100degrees
- 6. neutral hand position- little finger side of palm slightly lower than thmb side of palm
Sextants
- 1. max.right post sext
- 2. max. ant. sextant
- 3. max. left post. sext
- 4. mand. left post sext
- 5. mand. anterior sextant
- 6. mand. right. post sext

Author

melissacarvalho

57282

Card Set

dental hygiene instrumentation

Description

dh instrumentation

Updated

2010-12-27T20:00:29Z

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