Malocclusion issues Flashcards

1
Q

What is an Anterior Open Bite (AOB)?

A

Condition where there is no contact and no vertical overlap of the lower incisor crowns by the upper incisor crowns when mandible is in full occlusion

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2
Q

What can cause an AOB?

A
Habits
Abnormal tongue function
Trauma/pathology affecting condyle
Muscular dystrophy
Pathological - cleft lip/palate
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3
Q

Treatment of a skeletal open bite?

A

Combined orthodontic/surgical approach
TADs to intrude buccal segments
Extract distally, do not distalise molars

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4
Q

Treatment of a dental open bite?

A

Stop rabbit
High pull headgear and transpalatal arch
Fixed appliance and vertical anterior elastics
TAD’s

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5
Q

What is the definition of a deep bite?

A

Increased overlap, beyond average (2-4mm) of the upper incisors with the lower incisors
complete to tooth/soft tissue or incomplete

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6
Q

What are the causes of a deep bite?

A

Anterior growth rotation due to lower anterior face height or upper posterior face height
excessive eruption of incisors especially lower incisors
Retroclination by muscle activity

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7
Q

How can a deep bite be treated?

A
URA with anterior bite plane in growing patients
Fixed appliances incorporating 7's
Tip Edge
Class II elastics
TAD's
Low pull headgear
Orthognathic surgery
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