Prac quiz questions Flashcards by Rodwan Halimi

What are the types of motion activation?

Wrist activation (Doorknob like - more powerful, less fatigue, more often used for calculus removal with hand instruments)

Digital activation (Used more often for ultrasonic scaling and not recommended for calculus removal with hand instruments)

Digital activation

How well did you know this?

Not at all

Perfectly

What is the purpose of a hand pivot?

Line angles maintain adaptation as working end moves around the tooth

How well did you know this?

Not at all

Perfectly

What are the parts of the instrument?

Handle

Shank

Working end

How well did you know this?

Not at all

Perfectly

What are the differences between a simple and complex shank?

Working end direction being faced:

Simple (used for anteriors) = straight

Complex (used for posteriors) =
Side to side for mesial and distal root surfaces.
Front-back bend reaches facial/lingual root surfaces

How well did you know this?

Not at all

Perfectly

What is the role of the functional shank?

Allows working end to be adapted to the tooth surface

How well did you know this?

Not at all

Perfectly

What is the role of the terminal shank?

Portion of the functional shank nearest to the working end

How well did you know this?

Not at all

Perfectly

What does the use of the instrument for sub or supra gingival purposes depend on?

Shank length

How well did you know this?

Not at all

Perfectly

What are the parts of the working end?

Face

Back

Lateral surfaces

Cutting edges

Toe/tip

How well did you know this?

Not at all

Perfectly

What kind of stroke is used for perio probing?

Walking stroke without removing from tissue and without causing trauma

How well did you know this?

Not at all

Perfectly

What is the ideal stroke pressure?

10 - 20 grams

How well did you know this?

Not at all

Perfectly

How many measurements are recorded per tooth?

How well did you know this?

Not at all

Perfectly

What factors limit the accuracy of perio measurements?

Position of the gingival margin

Interference from calculus deposits

Overhangs

Amount of pressure

Misread probe calibrations

How well did you know this?

Not at all

Perfectly

What are the furcation gradations?*

Grade I:

Grade II:

Grade III:

How well did you know this?

Not at all

Perfectly

What are the furcation gradations?*

Grade I:

Grade II:

Grade III:

How well did you know this?

Not at all

Perfectly

What are the classes of mobility?*

Class I

Class II

Class III

How well did you know this?

Not at all

Perfectly

Which teeth are assessed in CPITN?*

How well did you know this?

Not at all

Perfectly

What are the CPITN classifications?*

How well did you know this?

Not at all

Perfectly

What is CPITN?*

How well did you know this?

Not at all

Perfectly

What are the advantages of sharpening instruments?

Easier calc removal

Improved stroke control

Reduced number of strokes

Increased patient comfort

Reduced fatigue

How well did you know this?

Not at all

Perfectly

What is the cutting edge a junction of?

Face and lateral edge

How well did you know this?

Not at all

Perfectly

What is the internal angle on working end of the graceys?

70 - 80 degrees

What is the internal angle of the universal working end?

70 - 80 degrees

What are the differences between site-specific instruments relative to the unviersal?

Site-specific instruments have long, complex, lower shanks whereas universals have parallel edges.

Tilted edge

Only 1 cutting edge

Why is universal named that way?

Design features are made for anterior and posterior teeth:

Rounded back

Rounded toe

Semi-circular x-section

2 cutting edges

Face is perpendicular to the lower shank

How can small to medium calculus deposits be removed?

Using universal curettes

Why would we want to increase the working end length?

To reach the mesial/distal midline (longer is better for proximal surfaces of posterior teeth)

Which cutting edge is used for anterior teeth with universal instrument?

Outer edge (M with one end and D with the other) The lower shank reaches across the tooth.

What are the options for advanced fulcrums?

Finger-on-finger Cross arch (L/R) Opposite arch (max/mand) Finger assist (non-dominant hand used to concentrate lateral pressure against the shank) Extraoral - including chin cup

What are the advantages of extraoral fulcrums?

Easier access to maxillary 7s and 8s as well as to deeper pockets (especially narrow ones) Improved parallelism of lower shank to molar teeth Neutral wrist position for molar teeth

What technique is used for deep pockets?

Extraoral fulcrums

What are the disadvantages of using advanced extraoral fulcrums?

Greater degree of muscle coordination and instrumentation skill required Greater risk of instrument stick injury Reduced tactile information TMJ problem makes patient unable to tolerate it.

What are the ways of performing extraoral fulcrums?

Knuckle rest with palm facing out OR Chin cup

What are the benefits of a standard intraoral fulcrum?

Highest stability Decreased likelihood of injury to patient or clinician (least strain on fingers) Best leverage during instrumentation

What are the functions of a perio explorer?

Examination of: Calculus deposits Dental anomalies Anatomical features Dental restorations and sealants

What are the features of a 11/12 type explorer?

Tip is 90 degrees to lower shank Long complex shank

What are the advantages to using an 11/12 type explorer?

Smooth back of tip contacts soft tissue Complex shank Universality is useful

What type of stroke is used to detect calculus?

Assessment / Exploratory stroke

What does a gritty bump tell us about calculus?

Could be small calculus Ledge of calculus Overhang Underhang Caries

What do you touch at the bottom of the gingival sulcus?

Junctional epithelium

What information can't be gathered from probing depth?

Alveolar bone loss because it takes into account the gingival margin normally. This means if there is movement of the gingival margin from its normal position slightly above the CEJ then the bone loss can't be gathered from probing depth alone.

What is the clinical attachment level?

The location of the periodontal attachment system on the tooth. Probing depth + gingival recession

What is furcation involvement?

Loss of alveolar bone and PDL in the space between the roots of a multirooted tooth

What are the parts of the working end of the curette?

Leading (toe) Middle Heel

4 ways to detect calculus, then explain the best version

Tactile Visual inspection Radiograph Perioscope

What are the steps taken to sharpen a gracey?

Hold a stone 75 degrees to the ground Hold instrument in your palm with the face of the instrument parallel with the countertop Sharpen with upward stroke of the instrument Sharpen the heel the middle and the toe separately Make sure to sharpen around the edge of the toe to maintain the rounded curve at the toe

What are the 3 things charted on a perio chart?

Margin is -ve above CEJ and +ve below Pocket depth is distance from margin to bottom of pocket CAL is margin + pocket depth

What is the angulation of insertion/debridement?

Insertion = 0 - 40 degrees (Ideally 0) Debridement = Angle of 60 - 80 ideally

Which end of Universal instrument to use for mesial/distal of molars and to label on an instrument which that is

Inner edge is used for the distal side Outer edge is used on facial, lingual, and mesial surfaces

Give 5 important aspects of probing technique:

Walking the probe Walking around the entire circumference Adaptation Parallelism Stroke pressure (10 - 20g)

What are the identifying features of a hoe

working end is a 99 degree bend at the edge of the working end where the toe of the curet is

What are the identifying features of a 17/18?

It is purple with a label

What are the identifying features of a naber's probe?

Graduated with a sickle shape