DH 311 Exam 2 Questions and Answers
1. What makes Pt/Op position important?: musculoskeletal disorders in
dental healthcare providers
2. What are injuries caused by?: - fast- paced or repetitive movements
- forceful or awkward movement
- poor posture
3. How far should the head tilt?: goal: 0 to 15 degrees
4. How bent should your back be?: Leaning forward slightly from the waist
or hips
5. What should your torso be aligned with?: in line with the long axis
6. How should your shoulders be positioned?: shoulders even in a neutral
posi- tion
7. What position should your elbows be?: at waist level held slightly
away from the body
8. What positions should your forearms be?: parallel to the floor
9. How should your hand be positioned?: little finger- side of palm slightly
lower than the thumb
10.How much higher should the seat back be than the front of the seat?: 1
in. higher
11.How low should the patient chair be in relation to the clinician?: the tip
of the patient's nose should be below the clinician's waist
12.What clock position should the R handed clinician be at for working
on anterior surfaces towards?: 8:00
13.What clock position should the R handed clinician be at when working
on anterior surfaces away?: 12:00
14.What clock position should the R handed clinician be at when working
on posterior surfaces towards?: 9:00
15.What clock position should the R handed clinician be at when working
on posterior surfaces away?: 11:00
16.What does the modified pen "C" grasp allow for?: - facilitates precise
control of instrument
- allows detection of rough areas on tooth surface
- lessens musculoskeletal stress
- allows for a "rolling" of the instrument
17.What is extensor wad stain?: A painful disorder of the fingers as a
result of injury to the extensor muscles
18.How do you get extensor was strain?: extending the fingers
independently of each other
19.What are the uses of the dental mirror?: indirect vision, retraction,
indirect illumination, transillumination
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, DH 311 Exam 2 Questions and Answers
20.What is transillumination?: The technique of directing light off of the
mirror surface and through the anterior teeth
21.What hand are extraoral fulcrums ideally used for?: non- dominant
hand (dental mirror)
22.What hand are intraoral fulcrums ideally used for?: dominant hand
(instru- ment)
23.What is the purpose of extraoral fulcrums when using them with the
dominant hand?: to keep the terminal shank parallel to the long axis of
the tooth
24.Is the fulcrum closer or farther away when working on anterior teeth?:
clos- er
25. Is the fulcrum closer or farther away when working on posterior teeth?: -
farther away
26.the probe depth is measured from:: the base of the pocket or sulcus
to the gingival margin
27.What does the CAL refer to?: the position of the periodontal attached
tissue at the base of the pocket
28.What types of probes are there?: UNC, Marquis, Nabor's
29.What type of probe do we use at NAU?: UNC probe
30.What are the purposes and uses of probes?: - assess periodontal status
- make sulcus/pocket survey
- determine clinical attachment level
31.What is the difference between the sulcus and a pocket in regards to
mm measurement?: sulcus= 1-3 mm.
pocket= >3
32.What is the number one error students makes when probing?: not
angling under the contact
33.How many grams of pressure should be applied?: 10-20
34.What type of stroke should be used when probing?: walking stroke
35.Is the junctional epithelium always a uniform depth?: No
36.how do you calculate CAL?: recession + probe dept
37.What are the basic explorer design types?: - shepherd hook
- straight
- orban
- pigtail and cowhorn
- 11/12 type
38.What type of explorer do we use at NAU?: 11/12 explorer
39. What part of the explorer touches the soft tissue base of the sulcus?: -
curved back of the working end
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1. What makes Pt/Op position important?: musculoskeletal disorders in
dental healthcare providers
2. What are injuries caused by?: - fast- paced or repetitive movements
- forceful or awkward movement
- poor posture
3. How far should the head tilt?: goal: 0 to 15 degrees
4. How bent should your back be?: Leaning forward slightly from the waist
or hips
5. What should your torso be aligned with?: in line with the long axis
6. How should your shoulders be positioned?: shoulders even in a neutral
posi- tion
7. What position should your elbows be?: at waist level held slightly
away from the body
8. What positions should your forearms be?: parallel to the floor
9. How should your hand be positioned?: little finger- side of palm slightly
lower than the thumb
10.How much higher should the seat back be than the front of the seat?: 1
in. higher
11.How low should the patient chair be in relation to the clinician?: the tip
of the patient's nose should be below the clinician's waist
12.What clock position should the R handed clinician be at for working
on anterior surfaces towards?: 8:00
13.What clock position should the R handed clinician be at when working
on anterior surfaces away?: 12:00
14.What clock position should the R handed clinician be at when working
on posterior surfaces towards?: 9:00
15.What clock position should the R handed clinician be at when working
on posterior surfaces away?: 11:00
16.What does the modified pen "C" grasp allow for?: - facilitates precise
control of instrument
- allows detection of rough areas on tooth surface
- lessens musculoskeletal stress
- allows for a "rolling" of the instrument
17.What is extensor wad stain?: A painful disorder of the fingers as a
result of injury to the extensor muscles
18.How do you get extensor was strain?: extending the fingers
independently of each other
19.What are the uses of the dental mirror?: indirect vision, retraction,
indirect illumination, transillumination
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, DH 311 Exam 2 Questions and Answers
20.What is transillumination?: The technique of directing light off of the
mirror surface and through the anterior teeth
21.What hand are extraoral fulcrums ideally used for?: non- dominant
hand (dental mirror)
22.What hand are intraoral fulcrums ideally used for?: dominant hand
(instru- ment)
23.What is the purpose of extraoral fulcrums when using them with the
dominant hand?: to keep the terminal shank parallel to the long axis of
the tooth
24.Is the fulcrum closer or farther away when working on anterior teeth?:
clos- er
25. Is the fulcrum closer or farther away when working on posterior teeth?: -
farther away
26.the probe depth is measured from:: the base of the pocket or sulcus
to the gingival margin
27.What does the CAL refer to?: the position of the periodontal attached
tissue at the base of the pocket
28.What types of probes are there?: UNC, Marquis, Nabor's
29.What type of probe do we use at NAU?: UNC probe
30.What are the purposes and uses of probes?: - assess periodontal status
- make sulcus/pocket survey
- determine clinical attachment level
31.What is the difference between the sulcus and a pocket in regards to
mm measurement?: sulcus= 1-3 mm.
pocket= >3
32.What is the number one error students makes when probing?: not
angling under the contact
33.How many grams of pressure should be applied?: 10-20
34.What type of stroke should be used when probing?: walking stroke
35.Is the junctional epithelium always a uniform depth?: No
36.how do you calculate CAL?: recession + probe dept
37.What are the basic explorer design types?: - shepherd hook
- straight
- orban
- pigtail and cowhorn
- 11/12 type
38.What type of explorer do we use at NAU?: 11/12 explorer
39. What part of the explorer touches the soft tissue base of the sulcus?: -
curved back of the working end
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