Openbites Flashcards
1
Q
What is the causes of a posterior open bite?
A
- skeletal - increased vertical dimension
- tongue position - prevention eruption of teeth
- primary failure/arrested eruption of teeth
2
Q
What genetic factors cause an anterior open bite?
A
- high FMPA angle cases
- increased lower anterior face height
- backward growth rotation
3
Q
What environment factors cause an anterior open bite?
A
- habits
- abnormal tongue position
- trauma to condyle
- pathological (CLP, trauma)
4
Q
What is an anterior open bite?
A
When there is no contact or vertical overlap of lower incisors by upper incisors when mandible is in full occlusion
5
Q
What causes a relapse of an anterior open bite after treatment?
A
- unfavourable growth
- soft tissue factors
- resume digit habit
- inappropriate orthodontic movement
