14 - Nonsurgical Therapy

Question 1

How much reduction in BOP can we expect after SRP? (source)

Answer 1

Cobb

45% reduction in pockets 4-6.5mm

Question 2

Gains in attachment and reduction in probing depths after SRP 1-3mm pocket

Answer 2

0. 03mm PD decrease

0. 34mm CAL loss

Question 3

Gains in attachment and reduction in probing depths after SRP 4-6mm pocket

Answer 3

1. 29mm PD decrease

0. 55mm CAL gain

Question 4

Gains in attachment and reduction in probing depths after SRP 7+mm pocket

Answer 4

2. 16mm PD decrease

1. 19mm CAL gain

Question 5

How good are we at cleaning deep pockets? (source)

Answer 5

Caffesse

In 5mm pockets we miss calculus 65% of the time

Question 6

Where is residual calculus after SRP

Answer 6

CEJ
Line angles
Furcations
Root concavity

Question 7

Time period between initial therapy and re-eval? (source)

Answer 7

Caton

4-6 weeks

Question 8

Type of healing after SRP

Answer 8

Long JE

Question 9

How long can patient maintain progress on their own?

Answer 9

3 months

Question 10

3 parts of a dental instrument

Answer 10

Handle
Shank
Working end

Question 11

Last end of the shank close to the working end

Answer 11

Terminal shank

Question 12

Normal length of shank

Answer 12

30-40mm

Question 13

Distance from the first bend in the shank to the working end

Answer 13

Functional length

Question 14

3 shank classifications

Answer 14

Straight
Curved/angled
Contraangled

Question 15

Working ends of the instrument are in line with the long axis of the handle

Answer 15

Balanced

Question 16

Last 1/3 of the working end

Answer 16

Tip

Question 17

Surface opposite the face

Answer 17

Back

Question 18

Portion of working end closest to the shank

Answer 18

Heel

Question 19

Angle formed by the face and lateral surface making the cutting edge

Answer 19

Internal angle

Question 20

Termination of the working end

Answer 20

Toe

Question 21

Surface of the instrument between the two cutting edges

Answer 21

Face

Question 22

Surface on the side of the working end

Answer 22

Lateral surface

Question 23

Edge formed by the convergence of the lateral surface and the face

Answer 23

Cutting edge

Question 24

Typical angle formed by internal angle

Answer 24

70-80 degrees

Question 25

Cross section of scaler

Design

Uses

Answer 25

Triangular

Sharpened tip, 2 cutting edges

Supragingival

Question 26

Cross section of curette

Design

Uses

Answer 26

Semicircular

Rounded toe, 2 parallel cutting edges

Subgingival

Question 27

Universal curette design

Face angle

Use

Answer 27

2 straight cutting edges

Face angled at 90 degrees to terminal shank

Reach all 4 surfaces of the teeth

Question 28

Site specific curette design

Face angle

Answer 28

1 cutting edge, lower of the two edges

Face angled 60-70 degrees to the terminal shank

Question 29

Range of working angulation

Most ideal

Answer 29

45-90 degrees

88 degrees

Question 30

Closed angulation

Answer 30

Face of instrument is zero degrees to the tooth

Question 31

Open angulation

Answer 31

Face of instrument greater than 90 degrees to the tooth

Question 32

Heavy lateral forces to remove plaque/calculus/stain

Answer 32

Scaling

Question 33

Light force to remove plaque/calculus/contaminated surface

Answer 33

Root planing

Question 34

Sonic scalers

• Cycles
• Motion

Answer 34

3000-8000 cycles/second

Elliptical or orbital

Question 35

Magnetostrictive

• Content
• Cycles
• Motion

Answer 35

Stacks of nickel iron alloy rings on top of ferrous rod

18,000-42,000 kHz

Elliptical

Question 36

Piezoelectric

• Content
• Cycles
• Motion

Answer 36

Crystal and electrical energy

24,000-45,000 kHz

Linear

Question 37

Implosion of bubbles caused by the vibration of hand piece

Answer 37

Cavitation

Question 38

Degree for sharpening

Answer 38

Stone placed at 100-110 degree angle to the face to maintain 70-80 degree of internal angle

Toe sharpened at 135 degrees