Periodontal instrumentation (final review) Flashcards

1
Q

Seating position for surfaces towards:

A

8:-9:00

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2
Q

Seating position for surfaces away:

A

11-12:00

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3
Q

What is the seating position exception?

A

Maxillary anterior facial may be completely done at 11-12:00

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4
Q

Anterior sickle scaler should only be used:

A

supragingivally

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5
Q

How should shank/handle of an anterior sickle scaler be held?

A

parallel to long axis of tooth

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6
Q

Describe the stroke used with an anterior sickle scaler?

A

short & overlapping strokes

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7
Q

Where should you begin on the tooth when using an anterior sickle scaler:

A

Begin at midline and into interproximal

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8
Q

Describe the instrument design of an anterior sickle scaler:

A

-straight rigid shank
-two cutting edges on each working end
-pointed tip (hence “sickle”)

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9
Q

The anterior sickle scaler tip is _____ in cross section

A

triangular

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10
Q

What portion of the anterior sickle scaler is used for calculus removal?

A

terminal 1/3 (tip)

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11
Q

When adapting the anterior sickle scaler, the shank & handle should be:

A

parallel to the long axis of the tooth

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12
Q

What is the proper angulation (cutting edge against the tooth) for an anterior sickle scaler?

A

45-90 degrees

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13
Q

Overangulation (greater than 90 degrees) of an anterior sickle scaler will result in:

A

burnished calculus and/or tissue laceration

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14
Q

Underangulation (less than 45 degrees) of an anterior sickle scaler will result in:

A

burnished calculus

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15
Q

Light grasp, minimal pressure stroke (similar to perio explorer)- when using an anterior sickle scaler is called:

A

Exploratory stroke

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16
Q

When using an anterior sickle scaler, the act of tightening the grasp and applying lateral pressure to the tooth on the coronal stroke is called:

A

working stroke

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17
Q

What is the difference in design between the anterior & posterior sickle scaler?

A

Posterior sickle scaler has a complex shank (additional bend)

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18
Q

Where can a posterior sickle scaler be used?

A

Posterior teeth, supragingival interproximal areas (may go SLIGHT subgingival)

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19
Q

How should the terminal shank be held of a posterior sickle scaler?

A

parallel to long axis of tooth

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20
Q

Describe the stroke used with a posterior sickle scaler:

A

short & overlapping strokes

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21
Q

Where should you begin on the tooth when using a posterior sickle scaler?

A

Begin at line angle & work interproximal (no buccal or lingual surface)

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22
Q

What is the purpose of a periodontal explorer?

A

detection of subgingival calculus

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23
Q

Describe the working strokes of a periodontal explorer:

A

short, walking, overlapping strokes

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24
Q

The terminal shank of the periodontal explorer should be:

A

held parallel to long axis of tooth

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25
Where on an anterior tooth should you begin when using a periodontal explorer?
Midline
26
When using a periodontal explorer- In anterior _____ is parallel to long axis of tooth In posterior ____ is held parallel to long axis of tooth
handle terminal shank
27
In what situation would you FLIP a periodontal explorer?
in anterior
28
In what situation would OFFSET a periodontal explorer?
in posterior
29
Where on a posterior tooth should you begin when using a periodontal explorer?
start at distal line angle and work interproximal
30
Describe the instrument design of a universal curette:
two cutting edges, rounded toe
31
What is the cross-sectional shape of a universal curette?
pacman shape
32
Where can universal curettes be used?
All surfaces of all teeth (supra&subgingivally)
33
Give examples of different universal curettes:
Columbia 13/14 McCall's 17/18 4R/4L
34
The 4R/4L universal curette is used for:
deep pockets
35
The Columbia 13/14 & mcCalls 17/18 universal curettes are used on:
shallow pockets
36
How can you be sure the correct working end is being utilized when using a universal curette?
Terminal shank is parallel to long axis of tooth (when inserted interproximally)
37
The ideal instrument stroke for universal curette:
Oblique & overlapping
38
When using a universal curette on anterior teeth, where do you begin?
begin at midline, scale into interproximal space
39
What is parallel to the long axis of the tooth when using a universal curette on anterior tooth?
Handle
40
When using a universal curette on posterior teeth, what is parallel to the long axis of the tooth?
terminal shank
41
In the anterior region, a universal curette should be:
Flipped
42
In the posterior region, a universal curette should be:
offset
43
Describe the instrument design of area specific curettes:
-one cutting edge -rounded toe -straight & complex shanks
44
What should an area specific curette be used for?
deep periodontal pockets, due to their ability to adapt to root anatomy
45
What instrument should be used for subgingival debridement with pockets greater than 5mm?
area-specific curette
46
What instruments have a face?
area-specific curette
47
In a gracey curette the face is tilted ____ relative to the terminal shank
70 degrees
48
The gracey 1/2 is used on ____ surfaces of ____ teeth
all surfaces of anterior teeth
49
The gracey 11/12 is used on ____ surfaces of ____ teeth
facial, lingual & mesial surfaces of posterior teeth
50
The gracey 13/14 is used on ____ surface of ____ teeth
distal surfaces of posterior teeth
51
For both the gracey 11/12 & 13/14 the ____ is parallel to the long axis of tooth
terminal shank
52
For the gracey 1/2 the ____ should be held parallel to the long axis of the tooth
handle
53
What type of shank design is seen with the gracey 1/2?
simple
54
Where do begin on the tooth when using a gracey 1/2?
begin at midline and scale interproximally, then flip
55
The gracey 11/12 and gracey 13/14 are known as:
complimentary instruments
56
The part of the shank that allows for the working end to be adapted to the tooth surface; begins below the working end & extends to the last bend in the shank, nearest the handle:
Functional shank
57
The portion of the functional shank nearest to the working-end:
terminal shank
58
The function of an instrument is determined primarily by:
design of the working end
59
Important for maintaining contact of working end & tooth structure during instrumentation:
Adaptation
60
Important for efficient plaque & calculus removal:
Activation
61
Refers to the angle between the face of a bladed instrument & the tooth surface:
Angulation
62
Probing inaccuracy is related to:
1. probe design 2. pressure applied 3. contour of tooth
63
Base of pocket to gingival margin:
probing depth (PD)
64
CEJ to base of pocket:
attachment level
65
CEJ to gingival margin (GM):
recession
66
If the measurement for the gingival margin is + :
recession is present
67
If the measurement for the gingival margin is - :
The gingival margin is coronal to the CEJ (no recession)
68
Calculate attachment loss given the following measurements: PD= 5 mm GM= -3 mm
CAL = 2 mm (5) + (-3) = 2 mm