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Ortho > Invisalign > Flashcards

Invisalign Flashcards

1
Q

why invisalign - general

A
  1. improve health - periodontal occlusal health
  2. pre-restorative case set up
  3. minimally invasive pat
  4. aesthetics
  5. ## referrals healtthy patient and practice
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2
Q

preventing gingival disease and bone loss shuld include?

A

proper tooth alignment

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3
Q

anterior crowding of 3mm or more serves as an

A

individual host factorfor perio disease

study recomends preventative treatment to help patients avoid bigger future problems

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4
Q

everyday opportuntiies for cleat aligner therapy

A

recession, clefting, cold sensitivity, abfractions, fractured teeth, avoid aggressive ceramics, bruxism, open airway dentistry- increase oral cavity volume via arch shape, pre restorative case set up

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5
Q

50% of population has

A

one or more sites of gingival recession

- progressive with age

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6
Q

horizontal vs vertical

A

horizontal more detremental

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7
Q

prevent afractions with

A

proper tooth alignment

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8
Q

theory of non carious cervical lesions

A

suggests that tooth flexure arising from cyclic, eccentric occlusal forces causes their formation and progression in vulnerable cervical regions of teeth

oblique HORIZONTAL LOADING on non caroious cervical lesions resulted in greater stress concentration compared with vertical loading

acute angles– displayed higher stress concentrations at the depth of the lsion

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9
Q

T/F invisalign can increase oral cavity volume?

A

yes - “open airway dentistry”

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10
Q

why ortho

A

treating malocclusion!

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11
Q

FDI definition of oral health

A

ability to speak, smile, smell, taste, touch, chew, swalllow and convey a range of emotions through facial expression with confidence and free fom pain or discomfort, and disease of the craniofacial complex

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12
Q

is malocclusion a disease?

A

yes
- crossbites, open bites, deep bites, and overjet

crowding diastemas spacing and rotations

each section is in their disease classfication

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13
Q

angles classification a disease?

A

no not active disease

but the crossbites, deep bites, etc are considered a disease

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14
Q

what considered a disease

A

transverse and vertical discrepencies are considered disease

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15
Q

class I can be healthy and unhealthy

A

yes

same w/ II and III

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16
Q

uncrowded adults have ___ transverse measurement

A

35-39 mm

developed a healthy occlusion without orthodontic intervention

shortest distance between teeth 3 and 14 (upper first molars) measure at the gumline

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17
Q

3 main things crowding comes from

A
  1. improper arch form
  2. improper arch width
  3. improper buccolingual inclinnation
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18
Q

buccolingual inclination

A

the buccolingual inclination of the maxillary and mandibular posterior teeth is assessed by using a flat surface that is extended between the occlusal surfaces of the right and left posterior teeth

there should NOT BE a significant difference between the heights of the buccal and lingual cusps of the maxillary and mandibular premolars and molars with all cusps within 1MM OF THE STRAIGHT EDGE

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19
Q

proper overbite

A

1.5 to 2 mm

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20
Q

moderate deep bite

A

cover 1/2 of lower teeth

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21
Q

patient in permanent dentition with class I treat?

A

anterior. premolar crossbite

do not correct molar crossbite

open bites less than 2mm

like arches

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22
Q

patient in permanent dentition with class I refer?

A

molar crossbite

mixed dentition

open bites over 2mm

unlike arches

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23
Q

patient in permanent dentition with class I refer?

A

molar crossbite

mixed dentition

open bites over 2mm

unlike arches

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24
Q

patient class II what is GP treating

A

No A-P correction

over jet is less than or equal to 3mm

if need to correct A-P or have overjet of over 3mm REFER

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25
Q

class III gp?

A

no - never - always refer

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26
Q

how many photos needed for case submission

A

8

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27
Q

impression material you need to use if non digitial

A

PVS

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28
Q

5 basic zones

GP stay in what zones?

A
  1. expand - transversely
  2. procline A-P
  3. IPR (make smaller keep same radius)
  4. distilize
  5. extract

1-3 stays within the GPR range

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29
Q

when is IPR useful?

A

black triangles due to perio and shape of teeth

  • crowding with inadequate formation of the papillla in gingival mbrasure

triangular shape teeth

periodontal disease

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30
Q

5 basic IMPORTANT STEPS

A
  1. check the initial occlusion
  2. check the comments tab
  3. check the final position
  4. check the animation and staging tabs
  5. submit changes or approve
31
Q

check the initial occlusion

A 
step 1 
- a-p directio ; check overjet and class relationship

vertical dimension
- check overbite

transverse direction – check midline

32
Q

check the comments tab

A

step 2
contains the most recent communication from technicians regarding your ClinCheck tx plan

  • quality of impressions
  • partially impressioned teeth
  • attachments interfering with occlusioon

communication betwenn you and the lab

check the anterior, lateral, and occlusal views

was arch form width and buccolingual inclination addresssed?

check overbute, overjet, intercuspation, occlusion, canine position

if required – apply changes

33
Q

check the final position

A

step 3

- checking this can give you the movement difficulty

34
Q

blue and black dots are

A

red flags – complicated movements happening on that area

35
Q

blue means

A

moderate movements

at times benefit from longr wear time or additinal techniques

close monitoring is recommended

36
Q

black

A

advanced movements

often require longer wear time or additional techniques

very close monitoring is recommended

37
Q

check the animation and staging tbs

A

step 4

  • evaluate the amount of movement having in mind
  • biology
  • consitency with paitent (perio, profile)
  • consistency with your tx plan
38
Q

submit changes or approve

A

step 5
- check 1 -4
review and approve

39
Q

patient first visit - starting tx

A

aligner delivery
placing attachments
IPR set up
patient aligner care

40
Q

3 ways to preform IPR

A

interproximal reduction

  1. manual method with strips
  2. slow speed disks
  3. high speed bur

1-3 –> easiest ot hardest

41
Q

red lines show

A

where you should be doing IPR’s and when

42
Q

materials required to perform IPR

A 
manual diamond strip 
polishing strips 
measuring gause 
unwaxed floss
fluoride varnish
43
Q

attachments provide

A

movement control or retention

three dimensional shapes added to tooth geometry to enhance interaction between an aligner and the teeth

44
Q

red shaped in clincheck represents

A

where you will put attachments

45
Q

retention for life during?

A

night only

46
Q

amount of anterir crowding that serves as an individual host factor for perio disease

A

anteior crowdning of 3mm or more

so can prevent gingival disease and bone loss should include recommending proper tooth alignment

47
Q

what is considered in the disease classifications
KO7.2
KO7.3

A

KO7.2 –> crossbites, open bites, deep bited, and overjets

KO7.3 –> crowding, diestema, spacing, and rotations are disease classifications

+ transverse and vertical discrepancies are considered disease

48
Q

malocclusion (corwding) comes from

A

improper arch form

improper arch width

improper buccolingual inclination

*transverse dimension

49
Q

arch forms

A

proper
improper - v shaped
improper omega (hardest to treat)

50
Q

transverse measurement is

uncrowded average in adults?

A

shortest distance between 3 and 14 (upper first molars) measured at the gumline

uncrowded adults have 35-39 mm transverse measurement

can use cotten role test or boley gauge

51
Q

32 mm transvverse is

A

improper arch width

52
Q

proper buccolingual inclination of max and mand posterior teeth

A

assess by usnig plat surface that is extended between the occlusal surfaces of right and left poaterior teeth

should NOT be a significant difference between the buccal and lingual cups – all cusps should be within 1mm of the straigh edge

53
Q

proper overbite

A

1.5-2mm

54
Q

open bite

A

<2.0 mm

55
Q

moderate deep bite

A

cover 1/2 of lower teeth

56
Q

longevity of dental work is directly related to

A

severity of malocclusion

57
Q

relative extrusion vs absoute extrusion

A

absolute – comes straight down

relative moves down and back at an angle - root tip moves too

58
Q

to increase the radius you

A

expand/ procline

*increase arch length

59
Q

movements to increase arch length

movements to decrease tooth mass

A

increase arch length

  • expand / procline
  • distalize

decrease tooth mass
- IPS – keep same radius, but resize the teeth (interproximal reduction)
- extract – keep same radius’ extract
-

60
Q

first two choices when possible for correction of crowding

A
  1. expand / procline

2. IPR

61
Q

to open a bite:

A

a vertical issue

  • flare teeth forward (relative intrusion)
  • upright posterior teeth
  • intrude incisore (
  • build up posteriors after
62
Q

to deepen bite

A

retract anteirors (relative extrusion)

  • extrude incisors
  • posterior equilibration
63
Q

midline correctins
subtract?
add?

A

subtract - may require IPR

add- may need to leave space for bonding

centering midlines may be challenging

64
Q

what is invisalign therapy

A

series of custom built Invisalign aligners engineered to apply specific forces to achieve the desired tooth movements

wear 20-22 hours / day

65
Q

GP three P’s to follow

A

predictable, preventive, profitable

66
Q

impressions that are ideal?

A

digital

67
Q

digital impression material

A

itero element intr-oral scanner
myitero software
itero scan sleeve

68
Q

PVS impression material

A

PVS material
vinyl or nitrile gloves

INVISALIGN IMPRESSION TREY

69
Q

treating maloccclusion with crowding deep bite vs straightening teeth crowing deep bite

A

malocclusion – primary using expansion

straightening / cosmetic focus – IPR and intrusion

70
Q

spacing with treating malocclusion vs straightening

A

malocclusion — consider leaving spaces for restorative solutions

spacing with straightening - close spaces or position teeth for ideal restorative dentistry

71
Q

when is IPR useful

A

black triangles due t perio and the shape of the teeth

  • crowding with inadequate formation of the papilla in the gingival embrassure

triangular shaped teeth
periodontal disease

72
Q

first steps on the computer

A
  1. new patient file
  2. tooth movement restrictions (ankylosis or implant supported) – need to mark these
  3. attachments
    - place as needed
  4. A-P relatinship
    - G-P select maintain
  5. overjet
  6. overbite
  7. bite ramps
    - protrusions on the aligner for discluding posteiror teeth)
  8. midline
    9 posterior crosbite
    - do not correct
  9. spacing and crowding
73
Q

special instructions override?

A

yes - override clinical prefernces

requests and restorative preference

74
Q

weekly aligners?

A

this is the recommendation

but depending on patient response to tx , particularly mature adults and non-compliant patients – consider longer periods between aligner changes

Ortho (19 decks)

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