Oral Habits Flashcards
What happens with a low centripital force?
no lip seal
What happens with centrifugal force modification? (2)
- ↓ in upper arch
* ↑ in lower arch
What are the deleterious habits? (4)
- THUMB SUCKING
- TONGUE THRUSTING
- ORAL BREATHING
- LIP INTERPOSITION
Pathologies: What happens with thumb sucking? (4)
- Constant mouth opening
- Tongue in lower position
- Abnormal pressures
*also root resorption
Why does constant mouth opening affect occlusion?
Mandibular clockwise rotation
Why does Tongue in lower position affect occlusion? (2)
- No contact with posterior segments of
maxillary bone - More pressure against posterior segments of
mandible
Why does Abnormal pressures from thumb sucking affect occlusion? (2)
- Lever on upper and lower incisors
- More central dentoalveolar pressure
- Anterior thrust of the maxilla
What does a pacifier do? (3)
- ginvigal trauma
- gingival recession
- alveolar bone loss
Pathologies: tongue thrust? (2)
- can be result of or CAUSE anterior open bite
- hypotonic lower lip
Pathologies: oral breathing definition? (2)
- ventilatory air flow resistance increases up to 4.5 cm H20/l/min - have 20% more CO2 and 20% less O2 in blood
Mature swallow: (4)
- No contraction of lips or facial muscles
- Contraction of temporalis muscle
- Able to swallow with lower lip separated
- Unconscious deglutition: palpate temporalis
Oral breathing and lip seal?
Not all individuals with absence of lip seal are
oral breathers
Pathology of oral breathing? (3)
- Open mouth and lower mandible
- Lower tongue
- Head extension
Oral breathing and open mouth pathology? (5)
- Mandibular clockwise rotation
- Increase of lower third height
- Vertical growth
- Stretching of facial musculature
- centripetal force on maxillary bone
Oral breathing and decend tongue pathologies? (3)
- No centrifugal force against maxillary bone
- No transcersal development
- Abnormal pressures against mandible
