four handed dentistry

Question 1

what is important to ensure a good dental seating position?

Answer 1

• 90 degree angle at hips and knee
• thighs parallel to floor
• feet on the floor
• back and neck upright
• shoulders relaxed
• move with chair (no twisting and bending)

Question 2

how much space should be between the operator and the patient?

Answer 2

12 to 18 inches

Question 3

where should the dental nurse be positioned in comparison to the dentist (height)?

Answer 3

2-4 inches higher

Question 4

what is a commonly increasing tool dentists are using to improve posture?

Answer 4

loupes

Question 5

how should the aspirator be held?

Answer 5

like a pencil in the dominant hand, firmly where the the tip joins the suction tubing

Question 6

where should the aspirator be positioned in the mouth?

Answer 6

adjacent and distal to the tooth/teeth being treated

Question 7

how is the 3:1 tip inserted?

Answer 7

• unscrew the silver nut slightly
• insert the tip firmly and tighten the nut
• always try it outside the patients mouth first

Question 8

what is the difference between direct and indirect aspiration?

Answer 8

direct is when the aspirator is placed directly behind the tooth being worked on, but indirect is more general

Question 9

what is important to remember when moving the aspirator around the mouth?

Answer 9

NEVER cross the back of the tongue

Question 10

when should the dental nurse enter and leave the patient’s mouth?

Answer 10

first and last

Question 11

describe the nurses placement when the dentist is working in the upper right quadrant?

Answer 11

• 3:1 retracts cheek
• aspirator on palatal surface

Question 12

describe the nurses placement when the dentist is working in the upper left quadrant?

Answer 12

• 3:1 retracts lower lip and cheek
• aspirator retracts upper cheek, in buccal sulcus

Question 13

describe the nurses placement when working in the lower left quadrant?

Answer 13

• aspirator retracts the cheek

Question 14

describe the nurses placement when working in the lower right quadrant?

Answer 14

• 3:1 syringe retracts cheek
• aspirator between tongue and lingual surfaces of teeth

Question 15

where is the most difficult area of the mouth to aspirate?

Answer 15

upper anterior region

Question 16

where is the static zone for a right handed operator?

Answer 16

12-2

Question 17

where is the transfer zone for a right handed operator?

Answer 17

4-7

Question 18

where is the operator zone for a right handed operator?

Answer 18

7-12

Question 19

where is the nurses zone for a right handed operator?

Answer 19

2-4

Question 20

where is instrument exchange done?

Answer 20

transfer zone