Rubber Dam Isolation

Question 1

The anchor tooth should be __ teeth posterior from the tooth being operated on

Answer 1

2

Question 2

The clamp should contact the tooth at __ points

Answer 2

4

Question 3

What are the advantages of using a RD

Answer 3

• Enables clean and dry operating field
• Improved visual access
• Possibility to work faster without interruptions
• Comfortable for the patient
• Prevents contamination with saliva, debris, blood and chemicals
• Prevents aspiration

Question 4

A RD should be used for every __(what kind of) procedure

Answer 4

adhesive

Question 5

(T/F) There are three RD thicknesses (thin, medium, and thick)

Answer 5

t

Question 6

For the RD hole punch the hole for the anchor tooth should be

Answer 6

the largest

Question 7

The first three largest holes are used for what type of teeth

Answer 7

molars

Question 8

What hole is used for premolars and canines

Answer 8

4th

Question 9

What hole is used for Max. incisors

Answer 9

5th

Question 10

What hole is used for Mand. incisors

Answer 10

6th (smallest)

Question 11

Where on the tooth is the camp place

Answer 11

at the HOC

Question 12

What in the point of using a RD clamp

Answer 12

• Holds RD in place
• Retracts gingival tissues
• Provides cervical access

Question 13

The bow of the clamps sites at the (mesial/distal)

Answer 13

distal

Question 14

A W2 clamp is used for…

Answer 14

Premolars and maxillary incisors (narrow jaws for smaller teeth)

Question 15

A W3 clamp is used for

Answer 15

Premolars and small molars (flat jaws)

Question 16

A W8 clamp is used for

Answer 16

Normally erupted maxillary molars

Question 17

A W7 clamp is used for

Answer 17

Normally erupted mandibular molars

Question 18

A W8A clamp is used for

Answer 18

Small/partially erupted molars (jaws angled down)

Question 19

A 212 clamp is used for

Answer 19

Class V isolation of incisors, canines, bicuspids (Jaws are more gingival on the buccal)

Question 20

(T/F) it is okay to put the jaws of a clamp close to a lesion

Answer 20

F- it may collapse and limits accessibility

Question 21

When punching a hole for the 212 clamp the ole should be placed slightly….

Answer 21

facial

Question 22

Why do we punch the hole for a 212 clamp facial

Answer 22

to prevent excess RD material at the facial

Question 23

In operative dentistry, __ is isolated with a RD verse endo where a __ is isolated

Answer 23

quadrant… single tooth

Question 24

What are the 3 things you should before RD isolation

Answer 24

• Anesthesia
• Shade selection
• Check occlusal contacts (if restoring an occlusal surface)

Question 25

Why should you select the shade of the tooth before RD placement

Answer 25

Tooth dehydrates quickly with RD

Question 26

As mentioned before the Jaws of the clamps contact the tooth in 4 spots, where are these contacts?

Answer 26

2 buccal 2 lingual

Question 27

What is used to stabalize a RD in the anterior

Answer 27

Wedjet or double floss

Question 28

What are some reasons why you may not be able to use a rubber dam

Answer 28

• Partially erupted teeth that can’t support a clamp
• 3rd molars
• Malposistioned teeth
• Patients with asthma (difficulty breathing through nose)
• Psychological reasons
• Latex allergy

Question 29

Alternatives to RD isolation

Answer 29

• Cotton rolls
• 2x2 gauze
• Isoshelid (dry angles) –> block the parotid to keep area dry
• Saliva ejector
• Spandex
• Retraction cord (may be necessary for sub gingival decayer non-retentive crown shape)