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23 Operative > 11 - Field Isolation (Rubber Dam) > Flashcards

11 - Field Isolation (Rubber Dam) Flashcards

1
Q

advantages of clean and dry field

A
  1. better vision
  2. clean cavity walls (less chance of recurrent caries)
  3. more reliable detection of caries
  4. development of maximal properties of restorative materials
  5. intimate contact of prep walls with bases, liners, and restorative materials
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2
Q

advantages of rubber dam

A
  1. most effective isolation and longest duration
  2. access and vision
  3. protects soft tissue
  4. increases operator efficiency due to better access/vision
  5. less debris patient has to contend with
  6. protects dentist and assistant from aerosolized infectious material
  7. protects patient from swallowing debris, NaOCl, files, bits of amalgam
  8. controls sources of moisture such as pt breathe, crevicular fluid, blood, saliva
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3
Q

exceptions to using rubber dam

A
  1. partially erupted teeth unable to hold clamp
  2. some third molars
  3. some malposed teeth
  4. asthmatics/illness with nasal breathing difficulties
  5. lesion position (subgingival)
  6. psychological reasons - patient rejects the use of it
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4
Q

T/F: psychological reasons (patients rejecting use of rubber dam) is a primary reason to use the RD

A

FALSE!! NOT A PRIMARY REASON! most patients accept if process and benefits are clearly explained

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5
Q

function of clamps

A

provide anchorage for most distal aspect

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6
Q

components of RD clamp

A
  1. 4 prongs
  2. bow
  3. holes
  4. jaw
  5. wings
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7
Q

what hold dam out of way during placement but are often in the way otherwise. it is deisgned to be placed in the dam and then the entire apparatus is applied to the tooth

A

wings

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8
Q
A
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9
Q

what are the names of A, B, and C

A

a. winged rubber dam clamp
b. wingless rubber dam clamp
c. butterly rubber dam clamp

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10
Q

what is the universal clamp

A

W8A

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11
Q

what is W8A placed on

A

molars

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12
Q

Why is W8A preferred by professors

A

if can isolate molar, can isolate any other tooth in quadrant

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13
Q

what does W in clamp number mean

A

wingless

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14
Q

what does D in clamp number mean

A

distalization of the bow

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15
Q

what does the A in the clamp number mean

A

angles prongs and jaws of clamp. better grab on the tooth

“angled prongs aimed apically”

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16
Q

what are these used for

A

premolars/anteriors

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17
Q

what teeth used for

A

molars

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18
Q

what used for

A

anterior or gingival retraction

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19
Q

what used for

A

molars

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20
Q

use the ___ dimension of the anchor tooth as a guide in selecting the clamp

A

M-D dimension

21
Q

Should the jaws extend past the M and D line angles?

A

NO

22
Q

what should be taken into account when selecting clamps?

A

wedge placement, seal around tooth, and soft tissue trauma

23
Q

what stretches the rubber dam to provide better access and vision

A

rubber dam frame

24
Q

the curvature of rubber dam frame matches what

A

the curve of patient’s chin

25
Q

1 hole punch used for what teeth

A

primary incisors

26
Q

2 hole punch used for what teeth

A

smallest incisors

27
Q

3 hole punch used for what teeth

A

max centrals, canines and premolars

28
Q

4 hole punch used for what teeth

A

large premolars/small to normal molars

29
Q

5 hole punch used for what teeth

A

large molars

30
Q

6 hole punch used for what teeth

A

large molars and tooth to be clamped

31
Q

what is used to clamp the clamp on the tooth

A

clamp forcep

32
Q

what are the two choices for RD technique

A
  1. wingless clamp technique
  2. winged clamp technique
33
Q

what is the wingless clamp technique

A

wingless clamp placed on the tooth (with floss ties around the bow) and the dam is stretched over top

34
Q

what is the winged clamp technique

A

winged clamp affixed to the rubber dam by inserting it thru the appropriate punched hole (the most distal). attaches to RD with wings. frame, dam and clamp enter into mouth as one unit

35
Q

technique preparation for RD

A
  1. exam
  2. select clamp
  3. safety: floss
  4. tryin
  5. prepare dam
  6. lubrication if desired
36
Q

what is used to retrieve if clamp becomes dislodged when patient swallow

A

floss

37
Q

when trying in clamp, what do you do?

A

open jaw, seat rotating form lingual to buccal, then check stability (pull up on bow)

38
Q

floss goes around what part of clamp?

A

BOW! not the hole

39
Q

does the floss come thru the dam from above or underneath?

A

underneath

40
Q

what do you use to draw floss thru hole that will go over clamp

A

cotton forceps

41
Q

what do you used to stretch the dam B-L over the clamp

A

index fingers

42
Q

do you start maneuvering the dam over the most anterior tooth and work posterior toward the clamp

A

yes

43
Q

how to apply winged RD

A
  1. place rubber dam on frame loosely
  2. place clamp with floss in hole for tooth to be clamped (held by wings)
  3. seat the clamp on the tooth
  4. remove RD from wings with a round ended instrument or with fingers by pulling out and pushing down at the same time
  5. floss down
  6. stabilize
  7. invert
44
Q

how to floss the damn

A
  1. carry leading edge with floss or dental tape
  2. make a second pass to carry trailing edge
  3. pull the floss out toward the buccal
45
Q

what is the process of ticking free edge under DM

A

inversion

46
Q

what happens if you don’t invert rubber dam

A

positive pressure under the dam, created by tongue movement, swallowing, etc., will cause leakage of saliva into the operating field

47
Q

what happens if you invert the rubber dam

A

positive pressure under the dam only causes the dam to seal more tightly against the tooth preventing leakage

48
Q

how to remove the dam

A

cut the plastic part off, remove the clamp, and inspect the dam for missing bits

23 Operative (15 decks)

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