Midterm Flashcards
(48 cards)
What are the causes of skeletal malocclusion?
- Trauma
- Pathology
- Congenital - clefts, syndromes
- Developmental - condylar hyperplasia
What is the cause of most malocclusions?
Developmental
What are the three ways to treat skeletal malocclusion?
- Growth redirection
- Orthodontic camouflage
- Orthognathic surgery
T/F: Orthodontic camouflage involves moving the teeth in the opposite direction that you would for pre-surgical orthodontics.
True
Camo - make it better
Pre-surgical - make it worse
_______ have allowed for more tooth movement than is described in the envelope of discrepancy.
TADs
What are the advantages of orthognathic surgery?
- Increased stability
- Decreased treatment time
- Improved occlusion
- Improved esthetics
What are the indications for orthognathic surgery?
- Skeletal discrepancy w/ masticatory difficulty
- Impingement on palatal tissue
- Speech difficulty
- OSA
- Psychosocial problems
- Esthetics
T/F: There is pre and post-surgical orthodontics involved with surgery.
True
T/F: All facial types can have a normal occlusion.
True
T/F: Patients with a straight profile are usually skeletal and dental class I.
True
T/F: Convex profile is usually associated with skeletal and dental class III.
False
Convex = class II Concave = class III
T/F: Class II is more common than class III.
True
T/F: Class II needs surgery more often than class III.
False
40% class III needs surgery
T/F: The vertical position, AP position, and transverse position of surgery are all determined by the stent.
False
AP and transverse = stent
Vertical = k-wire
T/F: Most patients with BSSO surgery do not experience any nerve damage.
False
Many experience some post-op symptoms, but nearly all of them are still happy
What is a stable treatment often used for anterior open bites?
LeFort I Osteotomy
How long is the jaw wired shut after LeFort surgery?
Shut with liquid diet for 3 days
6 weeks soft diet
T/F: Clefts can cause large maxillary AP deficiencies.
True
Who benefits the most from distraction?
Cleft patients
What is the key to reconstruction after trauma?
Re-establish proper occlusion
What is a complication of mandibular fractures?
Some can cause patients to swallow their tongue and block airway
T/F: Abrasions are very painful for patients.
True
Epithelial layer removed and nerves exposed
When stitching a laceration involving the lip where should the stitches start?
Vermillion border
What bacterial infection is common with animal bites?
Pasteurella multocida
Augmentin for 7 days
Cats have greater risk than dogs
