Sweep 1 Flashcards Preview

Ortho Final > Sweep 1 > Flashcards

Flashcards in Sweep 1 Deck (57):
1

Effectiveness:

what something can do in the real world.

2

Efficacy:

what something can do in a controlled environment

3

Space maintenance for a period of time of

6 months or more - most damage occurs in first six months. Mostly posterior teeth coming forward in upper, anterior going backwards in lower.

4

Nance is best for when you are missing

multiple upper teeth. Don't use transpalatals for missing teeth on both sides of arch - they would both tip forward.

5

Nance are

inactive appliances.

6

Bilateral max constriction with CO-CR shift ⇒ Tx with

W-arch, Quad helix

7

Open coil

opens space - need to be compressed to be activated.

8

Closed coil

holds space

9

W-arch:

○ Reciprocal anchorage
○ W-configuration → increases wire length ( ↑ flexibility)
○ Force applied near palatal CEJ (not thru Cres)
■ Compression on facial surfaces of molars
■ 50% skeletal & 50% dental
○ Fabrication ⇒ 1rst molars to place band
○ Retention ⇒ ~ 3 months (will relapse into normal occlusion)

10

Quad Helix
○ Only issue may be

patient compliance → pt may bend lingual wire

11

Space regaining

more than 3 mm need expansion.

12

● Pseudo Class III

○ Class I, but interference causes CR-CO shift leading to anterior crossbite

13

Deep bite use

hawley and bite plate (plastic between front teeth).

Best situation for this? Trauma - palatal tissue irritation

14

○ Max. removable with double helical cantilever

■ Steel round wire .022
● Double helix →

increases length, thus ↑ range & springiness

15

○ Max. removable with double helical cantilever

■ Steel round wire .022
● If too small →

deformed by pt; if too big → heavy forces

16

Double helical cantilever:
● Retention via
● Force applied ------

adams clasps (Lots of retention required; many clasps)

lingually

17

Double helical cantilever
● No labial bow →

common feature of removables, but labial bow interferes with desired facial movement)

18

Max removable with double helical cantilever
■ Tx for ------ months
● Activate

1-3

2 mm → gives 1 mm of movement in 1 month

19

○ Fixed appliance for AP bodily movement:

■ Rectangular wire

20

● 1° dentition w/o successors

○ Ankylosis worsens, so when extracted greater vertical defect (greater periodontal injury & attachment loss)
○ Consider early extraction

21

○ Elastic bandage ⇒ around elbow; only at night

■ Bulkiness reminds child; not a tight restraint
■ For 6-8 weeks

22

Treatment options for ankylosed 2nd 1° molars without successors:

● Maintain 1° molars (if no bony defects)
● Extraction before vertical discrepancy too great
● Decoronation - remove crown & leave root tip (facilitates vertical bone growth)

23

● Don’t treat deep bite in mixed dentition → unless

soft tissue trauma

24

16 y/o male with Class III

don't treat till 21 - female at this age can be treated

25

○ Hawley retainer with finger spring (tipping) →

2 mm activation gets 1 mm movement

26

■ Adams clasps better for

retention (wraps around teeth; good for kids with short crowns)

27

TMA preferred over stainless steel for making

bends for extrusion - better flexibility)

28

○ Retention required when ----- manipulated

several teeth

29

○ Anterior crossbite correction doesn’t require retention if

proper overbite achieved

30

○ Round wire for ----- & ----- for finishing

aligning

rectangular

31

Apnea-Hypopnea Index (AHI) =

total # of apnea + hypopnea / hours of sleep

32

Metabolic syndrome ⇒

group of risk factors that occur together & ↑ risk of CAD, stroke, DM Type II

33

● EGG ⇒

monitors brain activity to document sleeps stages

34

● EOG ⇒

eye movements - determines REM vs. non-REM sleep

35

● Nasal/oral capnography ⇒

● Nasal/oral capnography ⇒ measures air flow from nose & mouth

36

● EMG ⇒

muscle activity; bruxism & restless leg syndrome

37

● --------------------- has highest accuracy for invisalign

Lingual constriction

38

Moderate generalized space discrepancy (---- mm per arch)

<4

39

Moderate generalized space discrepancy
○ Active Lingual Arch
■ Treats --------

anterior crowding

40

Moderate generalized space discrepancy
Active lingual arch
● Best for --------
● ------- of incisors (NOT good for rotations or bodily movement)
○ --------- of molar (anchor tooth)
● Increases risk of ---------

faciolingual discrepancies

Facial tipping

Distal tipping

2nd molar impaction

41

Moderate generalized space discrepancy
○ Active Lingual Arch
■ Clinical management ⇒

separate teeth for banding; activation every 4-6 weeks

42

Moderate generalized space discrepancy
○ Lip Bumpers
■ Treats ----------
● Best for ------- discrepancies
● Possible -------------

lower anterior &/or buccal segment crowding

facial lingual

2nd molar impaction

43

Moderate generalized space discrepancy
○ Headgear
■ Treats --------- (maxillary arch ONLY)
● Molar movement -----------
○ ----------- fibers will pull premolars distally too
● Cervical headgear → also does ----------
● Requires compliance

buccal segment crowding

distally &/or buccally


Interseptal gingival

extrusion

44

Moderate generalized space discrepancy
Headgear
■ Clinical management:
● Adjustment every ----weeks
● Can expect----- mm in a year

6-8

3-4

45

Serial extractions ⇒ Severe space discrepancy

> 10 mm per arch

46

● Localized space shortage is an opportunity to regain space if

< 3 mm per quadrant

47

1. Permanent molar ectopic eruption
○ 1rst permanent molar erupts ------ → may cause ----------

mesially

1° molar resorption & loss

48

Moderate localized space discrepancy (

<3mm per quadrant)

49

○ Space regaining treatment plans:

band and spring

50

■ BAND & SPRING
● ------- banded and spring pushes-------- back
● --------- tip
○ Short roots bc still erupting - very easy to tip
● Fabrication → made by lab, so need to band and separate tooth for impression; wire bend & soldered by lab
○ Activated-------
○ Treatment completed after ---- activations
● No ------- required

1° molar

2° molar

Uncontrolled distal crown

3-4 mm

2-3

retention

51

Moderate localized space discrepancy

● Direct (Intraoral) fabrication with no soldering → tooth banded & bent wire used as spring


■ MODIFIED BAND & SPRING

52


● Most modern & efficient way → No banding; intraoral fabrication
● Brackets bonded on dentition with spring inbetween

■ BONDED SPRING

53

Space regaining for posterior tooth loss
○ Max. removable appliance - Hawley finger spring
■ Biomechanics:
● Resistance/anchorage via ----------
● Uncontrolled -------- tip
■ Lab fabrication;-----mm activation; ----- movement per month
■ ----------- required (with --------)

adams clasps & anterior palate

distal crown

2-3

1mm

Retention & stabilization

band & loop

54

Space regaining for posterior tooth loss
○ Banded & bonded appliance with coil spring
■ Open coil spring biomechanics
● Reciprocal force applied -----------
● Distal force & moment produces --------
○ Mesial rotation of --------- rotation of molar

buccal to C-res

rotation

PM & Distal

55

Space regaining for posterior tooth loss
○ Banded & bonded appliance with coil spring■ Contralateral 1rst permanent molar banded as well
● Mandibular arch → Anchorage via anteriors with ---------
● Maxillary arch → Anchorage via ------- on palate

LLHA

nance button

56

1. Space regaining for anterior & posterior space discrepancy (

<3mm)

57

1. Space regaining for anterior & posterior space discrepancy
○ Treatment with Lower lingual holding appliance (LLHA)
■ Tips ------- (~roughly equal distance)
● Inefficient way to move teeth bc wire is

molars distally & anteriors facially

heavy with little range of movement, but good way to gain space