Week 2- Isolation of the operating field

Question 1

goals of isolation

Answer 1

moisture control
retraction and access
harm prevention

Question 2

advantages of isolation

Answer 2

dry/clean operating field
better visibility/access
improved properties of dental material (when in dry field)
protection of patient and operator
increase operator efficiency

Question 3

hole positioning for incisors

Answer 3

1st premolar to 1st premolar

Question 4

hole positioning for canine

Answer 4

1st molar to opp. lateral incisor

Question 5

hole positioning for premolars

Answer 5

1-2 teeth distal to opp. lateral incisor

Question 6

hole positioning for molars

Answer 6

as far distal to opposite lateral incisor

Question 7

steps of rubber dam placement

Answer 7

1. lubricate
2. punch holes
3. place retainer, put dam over retainer
4. place napkin
5. attach frame (Young holder)
6. pass septa (holes) around teeth
7. confirm and check visibility

Question 8

what kind of retainer is used for class V restorations?

Answer 8

cervical retainer No.212 (anterior)

Question 9

when do you substitute retainer with matrix band?

Answer 9

posterior class II restorations

Question 10

primary dentition isolation

Answer 10

most posterior tooth to canine

Question 11

rubber dam errors

Answer 11

off center arch form (bad hole punching)
inappropriate distance btw septa
inappropriate retainer
retainer pinched tissue
shredded or torn dam
sharp tips on no.212 retainer
poor removal

Question 12

alternative when rubber dam isolation is impossible

Answer 12

cotton rolls and cellulose wafers

Question 13

if patient is at risk for aspiration use:

Answer 13

throat shields (maxillary teeth)

Question 14

use when restoration involves subgingival margin

Answer 14

retraction cord

Question 15

mouth props

Answer 15

open patient’s mouth while relieving muscles

Question 16

drugs used to control salivation

Answer 16

atropine