Periodontal Instrumentation & Seating (FINAL REVIEW) Flashcards by Abagayle Moody

Seating position for surfaces toward:

8-9:00

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Seating position for surfaces away:

11-12:00

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What is the seating position exception?

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

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Anterior sickle scaler should only be used:

supragingivally

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How should the anterior sickle scaler shanks/handle be held?

parallel to long axis of the tooth

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Describe the stroke used with an anterior sickle scaler:

short and overlapping strokes

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

begin at midline and into interproximal

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Describe the instrument design for an anterior sickle scaler:

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

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The anterior sickle scaler tip is ___ in cross section

triangular

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

terminal 1/3

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

parallel to the long axis of the tooth

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What is the proper angulation (cutting-edge against the tooth) for anterior sickle scalers?

45-90 degrees

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

burnished calculus and/or tissue laceration

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

burnished calculus

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

exploratory stroke

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

working stroke

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

posterior sickle scaler has a complex shank (additional bend)

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Where can a posterior sickle scaler be used?

posterior teeth, supra gingival interproximal areas only (may go SLIGHT subG)

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

parallel to long axis of tooth

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Describes the strokes used with a posterior sickle scaler:

short and overlapping strokes

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

begin at line angle and work interproximal (NO BUCCAL OR LINGUAL SURFACE)

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What is the purpose of a periodontal explorer?

detection of sub gingival calculus

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Describe the working strokes of a periodontal explorer:

short, walking, overlapping strokes

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The terminal shank of the periodontal explorer should be:

held parallel to the long axis of the tooth

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Where on an anterior tooth should you begin when using a periodontal explorer?

midline

When using a periodontal explorer- In anterior teeth, ____ is parallel to the long axis of the tooth In posterior teeth, ____ is held parallel to the long axis of the tooth

handle terminal shank

In what situation would you FLIP a periodontal explorer?

Anterior teeth

In what situation would you OFFSET a periodontal explorer?

Posterior teeth

Where on a posterior tooth should you begin when using a periodontal explorer?

Start at distal line angle and work interproximal

Describe the instrument design of a universal curette:

- 2 cutting edges - rounded toe

What is the cross section shape of a universal curette?

pacman shape

Where can universal currents be used?

all surfaces of all teeth (supra & sub gingival)

Give examples of universal curettes:

Columbia 13/14 Mcalls 17/18 4R/4L

The 4R/4L universal curette is used for:

deep pockets

The Columbia 13/14 and Mcall's 17/18 are used on:

shallow pockets

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 the tooth (when inserted inter proximally)

The ideal instrument stroke for a universal curette:

oblique and overlapping

When using a universal curette on anterior teeth where do you begin?

begin at midline and scale into interproximal space

What is parallel to the long axis of the tooth when using a universal curette on anterior teeth?

handle

When using a universal curette on posterior teeth, what is parallel to the long axis of the tooth?

terminal shank

In the anterior region, a universal curette should be:

flipped

In the posterior region, a universal curette should be:

Offset

Describe the instrument design for an area-specific curette:

- one cutting edge - rounded toe - straight & complex shanks

What should an area specific curette be used for?

deep perio pockets due to their ability to adapt to root anatomy

What instrument should be used for subgingival debridement with pockets greater than 5 mm?

area-specific curette

What instruments have a face?

area-specific curettes

In a gracey curette, the face is tilted ____ relative to the terminal shank

70 degrees

The gracey 1/2 is used on ____ surfaces of ____ teeth

all surfaces; anterior teeth

The gracey 11/12 is used on ___ surfaces of ____ teeth

facial, lingual & mesial surfaces; posterior teeth

The gracey 13/14 is used on ____ surfaces of ____ teeth

distal surfaces of posterior teeth

For the gracey 11/12 and 13/14, the ____ is parallel to the long axis of the tooth

terminal shank

For gracey 1/2, the ____ should be held parallel to the long axis of the tooth

handle

What type of shank design is seen with a gracey 1/2?

simple

Where do you begin on the tooth when using a gracey 1/2?

begin at midline and scale to interproximal (THEN FLIP)

The gracey 11/12 and 13/14 are known as:

complimentary instruments

The part of the shank that allows for the working end to be adapted to the tooth surface; begins below the working end and extends to the last bend in the shank, nearest the handle

functional shank

The portion of the functional shank nearest to the working end:

terminal shank

The function of the instrument is primarily determined by:

the working-end design

Important for maintaining contact of working end and tooth structure during instrumentation:

adaptation

Important for efficient plaque and calculus removal:

activation

refers to the angle between the face of a bladed instrument and the tooth surface:

angulation

Probing inaccuracy is related to:

1. probe design 2. pressure applied 3. contour of tooth

base of pocket to gingival margin:

Probing Depth (PD)

CEJ to base of pocket:

attachement level

CEJ to gingival margin (GM)

recession

If the measurement for the gingival margin is positive:

recession is present

If the measurement of the gingival margin is negative:

The gingival margin is coronal to the CEJ (No recession)

Calculate attachment loss given the following measurements: PD= 5 mm GM= -3 mm

CAL = 2 mm 5 + (-3) = 2mm

Periodontal Instrumentation & Seating (FINAL REVIEW) Flashcards

(69 cards)