Malocclusion Flashcards
Disto-occlusion AKA?
Class II
Class II division 1? (2)
- proclined maxillary anterior teeth (diastemas)
- increased overjet
Class II division 2? (2)
- STRAIGHT/RETROCLINED maxillary anterior teeth
- decreased overjet
- increased/deep overbite
Class II division 1 spee curve?
increased
Class II division 1 upper arch?
compressed
Class II division 1 upper arch shape?
V
Class II division 1 lower incisors?
normal/retroclined
Class II division 2 Central and lateral incisors?
- central: retroclined
- lateral: PROCLINED
Class II division 2 overjet?
decreased
Class II division 2 overbite?
deep
Class II division 2 upper arch shape?
U
Class II division 2 lower arch? (2)
normal or retroclined loweer incisors
Mesio-occlusion?
class III
Disadvantages of angles classification? (3)
- Just takes into account the position of the 1st permanent molar
- Only sagittal plane
- Doesn’t consider etiology
Lischer: Arch malposition is associated with which reference plane?
Mid-saggital or anteroposterior
Lischer: Skeletal (max/mand) malocclusion is associated with which reference plane?
occlusal/horizontal plane
Lischer: Tooth malposition is associated with which reference plane?
arch shape
Supraversion?
Overeruption past plane of occlusion
Infraversion?
not erupted to occlusal plane
Dewey’s class I type 1? (2)
- crowded anterior upper teeth
- canines buccal or palatal
Dewey’s class I type 2? (2)
- protrusive max. incisors
- increased overjet
Dewey’s class I type 3?
anterior cross bite
Dewey’s class I type 4?
posterior cross bite
Dewey’s class I type 5?
1st molars mesially drifted
etiology: early loss of primary teeth
Dewey’s class III type 1?
edge to edge incisors
Dewey’s class III type 2?
lower anterior teeth crowded OR linguoversioned
Dewey’s class III type 3? (2)
- Crowded upper teeth
- anterior cross bite
Primary tissue involved in development of skeletal maloclusion?
Maxilla / Mandible
Primary tissue involved in development of muscular malocclusion?
mucular origin
Primary tissue involved in development of dental maloclusion?
dental origin