Lab exam

Question 1

Scaling stroke

Answer 1

wedging

Question 2

Root planing stroke

Answer 2

shaving

Question 3

– maximum pocket at which RP observed =

Answer 3

6.2 mm

Question 4

of furcations are narrower than narrowest curette

Answer 4

58%

Question 5

• Healing of a wound by tissue that does not fully restore the architecture or the function of the part

Answer 5

Repair

Question 6

– triangular flat surface with 2 cutting edges that converge in a sharply pointed tip

Answer 6

Scalers

Question 7

– spoon-shaped flat surface with 2 cutting edges and a rounded tip

Answer 7

Universal curettes

Question 8

– spoon-shaped curved surface with a cutting edges and a rounded tip

Answer 8

Specific (gracey curettes)

Question 9

U15/30 is a

Answer 9

scaler

Question 10

Powder-Water Spray Device

Answer 10

Sodium bicarbonate used with a water spray

Question 11

• Scalers: 204S and U15/30 T-J
scaler
– Reach supragingival surfaces
– Reach subgingival surfaces on enamel
– Effective near contact areas
– Not to be used on

Answer 11

root surfaces (will gouge)

Question 12

Scaling strokes

Answer 12

• Open rake angle
• Firm lateral pressure
• Short overlapping strokes

Question 13

Initial root planing strokes

Answer 13

• Firm to lighter strokes
• Short to longer overlapping strokes
• Vertical, oblique and horizontal strokes

Question 14

Gracey 15-16 correct angle:

Answer 14

Cutting edge leaning slighty toward tooth surface

Question 15

Universal Curettes

Answer 15

4R/4L, YG 7/8

Question 16

4R/4L

Answer 16

for posteriors - universal curette

Question 17

higher frequency =

Answer 17

smaller active tip area

Question 18

Power =

Answer 18

The length of the stroke of the insert

Question 19

The thinner the insert, the —- the power setting should be

Answer 19

lower

Question 20

CODE 2

Answer 20

• black band VISIBLE
• CALCULUS or DEFECTIVE
MARGINS

Question 21

Three non-surgical treatment approaches to periodontal infection control:
\

Answer 21

o Conventional staged quadrant-wise SRP o Full-mouth instrumentation
o Full-mouth disinfection