Risks/benefits of ortho Flashcards
Benefits of ortho tx
Improve aesthetics
Function- mastication and speech
Maintaining dental health of other teeth i.e. tilting of adjacent teeth and overeruption of opposing teeth
What does an IOTN score of 1 and 2 show
No need/low need for ortho tx (min benefit)
What does an IOTN score of 3 show
borderline need for ortho tx (some benefit)
What does an IOTN score of 4 and 5 show
Need/high need for ortho tx (significant benefit)
MOCDO acronym
Missing teeth
Overjet
Crossbites
Displacement of contact points
Overbites
Potential effect of impacted teeth
Root resorption
Cyst formation
Supernumary teeth can prevent normal eruption
Potential issues with anterior crossbite
Loss of perio support
Tooth wear
Potential issue with posterior crossbites
Assymetry
Issues with displacement of contact points (i.e. crowding)
Crowded teeth more difficult to clean- take longer- caries
Potential issues with deep traumatic overbite
loss of perio support
can cause gingival stripping
Why should ortho tx not be used to treat TMD
could aggravate existing TMD eg. using intermaxillary elastics
How to prevent decalcification
Case selection
OH
Diet advice
Fluoride
In order, which teeth are most affected by root resorption in ortho
UI
LI
6s
Risk factors for root resorption in ortho
- Types of tooth movement:
prolonged, high force
intrusion
large movements
torque - Root form: blunt, pipette, resorbed already
- Previous trauma
- Nail biting
Types of removable retainers
Clear occlusal retainer
Pressure/vacuum formed
Essix
Hawley type
