Quiz 3 Flashcards

1
Q

what is the shape of the access opening for maxillary incisors?

A

rounded triangle

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2
Q

what is the shape of the access opening for maxillary canines?

A

rounded teardrop

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3
Q

what is the shape of the access opening for maxillary premolars?

A

elongated oval

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4
Q

what is the shape of the access opening for mandibular incisors?

A

oval

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5
Q

what is the shape of the access opening for mandibular canines?

A

oval

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6
Q

what is the shape of the access opening for mandibular premolars?

A

oval

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7
Q

___% of maxillary incisors have 1 canal

A

100%

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8
Q

___% of maxillary canines have 1 canal

A

100%

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9
Q

___% of maxillary first premolars have 2 canals

A

60-80%

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10
Q

___% of maxillary second premolars have 1 canal

A

80-90%

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11
Q

___% of mandibular incisors have 2 canals

A

20-40%

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12
Q

___% of mandibular canines have 2 canals

A

3-6%

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13
Q

___% of mandibular first premolars have 1 canal

A

75%

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14
Q

___% of mandibular first premolars have 2 canals

A

25%

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15
Q

___% of mandibular first premolars have 3 canals

A

1%

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16
Q

___% of mandibular second premolars have 1 canal

A

85%

17
Q

___% of mandibular second premolars have 2 canals

A

15%

18
Q

define initial apical file

A

the first file that binds the minor apical constriction at working length

19
Q

define working length

A

how long the root canal system is from an incisal/occlusal reference point to the minor apical constriction

20
Q

define straight line access

A

straight until the first curvature or the apical third

21
Q

define master apical file

A

2-3 sizes bigger than the IAF; it goes to WL passively and stops at WL

22
Q

the minor apical foramen is considered the ___

A

“apical stop”

23
Q

what is the rotary instrumentation system we use?

A

brassler bio race

24
Q

when using rotary instrumentation, what are the steps, and what rotary files do you use at each step?

A
  1. BR-0: orifice opener file - coronal prep
  2. determine WL
  3. create glide path
  4. BR-1 to WL
  5. BR-2 preps apical 1/3
  6. BR-3 blends middle and apical 1/3
    * you can use BR-4 and BR-5 if the canal is larger
25
Q

what is the diameter and taper for BR-0?

A
  • diameter: #25

- taper: .08

26
Q

what is the diameter and taper for BR-1?

A
  • diameter: #15

- taper: .05

27
Q

what is the diameter and taper for BR-2?

A
  • diameter: #25

- taper: .04

28
Q

what is the diameter and taper for BR-3?

A
  • diameter: #25

- taper: .06

29
Q

what is the diameter and taper for BR-4?

A
  • diameter: #35

- taper: .04

30
Q

what is the diameter and taper for BR-5?

A
  • diameter: #40

- taper: .04

31
Q

what is the RPM of the rotary instrumentation using the custom setting?

A

500 RPM

32
Q

what is the typical RPM of NiTi rotary instrumentation?

A

250 RPM

33
Q

what is the typical RPM of GG using the slow speed?

A

2500 RPM

34
Q

what is the typical RPM of a high speed?

A

400,000 RPM