Risk And Benifits

Question 1

What are the benefits of ortho

Answer 1

Improvement in:

Appearance

Function

Dental health

Question 2

What are the psychological benefits

Answer 2

Improve self esteem and psychological well being

Quality of life improvement

Question 3

Does ortho tx improve speech

Answer 3

Rarely, it ain’t a justification for tx

Question 4

What can impacted teeth cause

Answer 4

Resorption

Prevent eruption

Associated with cyst formation

Question 5

If a overjet is >6mm what risks are there

Answer 5

Risk of trauma to upper incisors and incompetent lips

Question 6

Can crowding cause caries

Answer 6

No, it depends on OH and diet

Question 7

Does TMD justify ortho tx

Answer 7

Very weak evidence

Small associations with:
-crossbite with malocclusion
-class 2 with retrusive movement
-class 3
-AOB

Question 8

What risks are there

Answer 8

Decalcification

Root resorption

Relapse

Soft tissue trauma

Others include: recession, loss of Perio support, headgear injuries, enamel fracture, tooth wear

Question 9

What is the issue of decalcification

Answer 9

More prone to caries

Question 10

How do you prevent decal

Answer 10

Case selection
-motivated pt
-good OH preTx
-low caries risk

OHI

Diet advice

Fluoride
-switch to adult toothpaste if not using it

Question 11

What are indicators of a pt high risk of decal

Answer 11

Caries history

Pre-existing decal

Erosion

Question 12

How much of root is resorbed over a typical ortho fixed appliance tx

Answer 12

Approx 1mm over 2yrs

Question 13

What teeth are more likely to have root resorbed

Answer 13

upper incisors>lower incisors>6’s

Question 14

What Increases the risk of root resorption

Answer 14

Prolonged high force

Intrusion

Large movements

Torque

Root form, blunt, pipette, resorbed already

Prev. Trauma

Question 15

How do you manage relapse

Answer 15

Change retainer

Question 16

What does MOCDO stand for

Answer 16

Missing teeth
Overjet
Crossbites
Displacement of contact points
Overbites

Question 17

What problems can arrise from anterior crossbites

Answer 17

Loss of perio support

Tooth wear

Question 18

What problems can arrse from posterior crossbites

Answer 18

A significant displacement may lead to:

Asymmetry

Question 19

What problems can arrise from deep traumatic overbites

Answer 19

Gingival stripping

Loss of perio support

Question 20

What features are more prone to relapse following dental Tx

Answer 20

Lower incisor crowding

Rotations

Instanding 2’s

Spaces and diastemas

Class II div 2

Anterior open bites

Reduced perio support/short roots