Ortho III

Question 1

2 reasons 1st Ortho check-up should be prior to 7 years old:

Answer 1

Posterior occlusion established (1st molars)

Incisors begun to erupt (crowding/deep bites/open bites)

Question 2

AAO does not advocate comprehensive Tx at age 7

Answer 2

True

Question 3

6 indications for Phase 1 treatments:

Answer 3

Anterior/Posterior Crossbites

Impacted teeth

Skeletal growth problems

Habit

Space loss (from premature tooth loss)

Question 4

What type of malocclusion is more prevalent in 8-12 year olds?

Answer 4

Pseudo Class III

*rather than Class III

Question 5

Pseudo Class III is characterized by what 4 characteristics?

Answer 5

Anterior crossbite

Forward functional shift of mandible

retroclined max incisors

proclined, spaced mandibular incisors

Question 6

Correction of Pseudo Class III crossbite
increases max arch perimeter
decreases risk of gingival recession
decreases risk of incisal wear

Answer 6

True

Question 7

Unilateral crossbites represents U/L ______ discrepancy

Mandible shifts to avoid ______

Answer 7

transverse ridge

interferences

Question 8

Bilateral crossbite is a true ________

What is more common cause?

Answer 8

skeletal discrepancy

Mx constriction (rather than Mn enlargement)

Question 9

Canine exposure technique depends on canine position

labial/mid-alveolar/palatal
apical/coronal to attached gingiva

Answer 9

True

Question 10

4 techniques to expose Canine:

Answer 10

Gingivectomy

Apically positioned flap (plus bracket)

Closed eruption (tip and pin)

Open eruption (lingual/bracket)

Question 11

Canine exposure technique if mid alveolus:

If Buccal:

If Lingual:

Answer 11

Gingivectomy or Closed eruption

Apically positioned flap

Open eruption

Question 12

Lit says to treat Class II in early treatment

Answer 12

False

*no difference in final overjet, etc…

Question 13

Lit says facemask effective for correcting anterior crossbite, improving overjet, with slight relapse - to treat Class ____

Answer 13

III, early Tx

Question 14

Pacifiers should stop at what age?

Behavioral mods/reinforcement

at home techniques

what is last resort?

Answer 14

2 years

Appliances

Question 15

Band and Loop

Distal Shoe

Lingual Arch (TPA/Nance/LLHA)

Partial Denture

all do what?

Answer 15

Maintain space from early tooth loss

Question 16

Lip bumper can be used to ameliorate 3mm or less of localized space loss

Answer 16

True

Question 17

Moderate to Severe generalized crowding, 2 options:

Answer 17

Expansion

Extraction

Question 18

There should be no active Periodontal disease in an ortho patient

Answer 18

True

Question 19

If a tooth needs a crown, determine stability enough to the end of ortho treatment

*bond/bracket to crown will alter finish on porcelain

Answer 19

True

Question 20

Discuss spacing with orthodontist for restorative Tx

Answer 20

true

Question 21

Need to check root position if implant is indicated prior to de-bonding

Answer 21

True

Question 22

Active agent in Prevident:

Answer 22

Sodium fluoride 1.1%

Question 23

MI paste is calcium phosphate

Icon infiltrant is most promising Tx, low viscosity light curing resins

Answer 23

True

True

*with Prevident, 3 ways to mitigate WSL’s

Question 24

There is no difference between MI paste, prevident, fluoride varnish, standard OH to prevent WSL’s
*and lit says remineralizing agents aren’t effective

Answer 24

True

Question 25

Etching is a risk factor for WSL's

Answer 25

True

Question 26

External Apical Root Resorption can resolve after 6 months

Answer 26

True

Question 27

EARR is usually less than ___mm Severe (over 4mm) is seen in ___% of teeth Seen most in what incisors?

Answer 27

2.5 mm 1-5% Mx incisors > Mn incisors > first molars

Question 28

Increased duration, magnitude, intrusive movement, apical movement, method of force are all risk factors for EARR

Answer 28

True

Question 29

Bolton analysis is tooth size discrepancy leading to arch discrepancy

Answer 29

True

Question 30

Ortho is not a significant risk factor in TMD

Answer 30

True

Question 31

Malocclusion does not cause TMD

Answer 31

True

Question 32

If TMD, ortho Tx changes from intercuspal stability to a stable functioning masticatory system

Answer 32

True

Question 33

Minor tooth movement should be called isolated tooth movement Tx time around 6 months

Answer 33

True

Question 34

4 examples that indicate minor tooth movement

Answer 34

(there are like 10 more than this) Reposition drifting teeth for fixes/removable/implant Align anterior teeth (esthetic/splinting) Correct crossbite Forced eruption for crown placment

Question 35

What 3 procedures should dentists NOT attempt

Answer 35

Ortho for TMJ Intrusion Alleviation of crowding > 4mm

Question 36

Molar uprighting, bringing mesial root forward to close space is more difficult than tipping

Answer 36

True

Question 37

Ortho forces must be lighter in adolescent patients

Answer 37

True

Question 38

Labial movement of incisors to alleviate crowding can result in gingival recession

Answer 38

True

Question 39

Width of attached gingiva and thickness of gingival tissuea re equally important in predicting recession

Answer 39

True

Question 40

If minimal perio involvement, need what 2 things?

Answer 40

probing depths level of attached gingiva

Question 41

If moderate perio involvement, need what?

Answer 41

Control perio condition Defer restorative until ortho complete Ovoid bands, consider self ligating brackets Perio maintenance every 2-4 months while in Tx

Question 42

If severe perio:

Answer 42

maintenance every 4-6 weeks Tx mechanics need to be altered, keep forces minimal May keep hopeless teeth for anchors

Question 43

Most common Tx at old extraction sites:

Answer 43

Upright tipped teeth, place implant/bridge

Question 44

What is the exception of the rule to never move tooth into extraction space?

Answer 44

Juvenile aggressive perio - can close space of 1st molar

Question 45

Invisalign (clear aligner therapy), extrusion, rotation, and space closure are not as predictable as other movements

Answer 45

True

Question 46

Lingual orthotics are custom made for every tooth, and short span between brackets allows for what?

Answer 46

Stiffer wire

Question 47

3 retention devices:

Answer 47

Essix retainer (Hx perio/loss of tooth support) Occlusal splint Wraparound retainer

Question 48

5 factors to have good results w/ camouflage

Answer 48

Short, avg facial pattern mild A-P discrepancy < 4-6 mm crowding Normal soft tissue pattern No transverse skeletal issues

Question 49

Tension side Pressure side

Answer 49

Oseoblasts Osteoclasts

Question 50

What is the rate limiting factor in moving a tooth?

Answer 50

Pressure side (osteoclasts)

Question 51

Inflammatory markers signal bone resorption/remodeling

Answer 51

True

Question 52

RAP

Answer 52

Regional Acceleratory Phenomenon

Question 53

A tissue reaction that increases the healing capacities of affected tissues

Answer 53

RAP

Question 54

RAP is characterized by acceleration of normal cellular activities

Answer 54

True

Question 55

AOO

Answer 55

Accelerated Osteogenic Orthodontics Wilckodontics