Orthognathic Surgery (Dr. Costello)

  1. When is orthognathic surgery indicated?
    when the growth discrepancy between the maxilla and mandible is too large to be reconciled with ortho
  2. What is the most common major anomaly in the head and neck
    Cleft work

    (second source of work for oral surgeons)
  3. Orthognathic surgery dismantles the dysmorphic components of the craniofacial skeleton and then reconfiguring them in a more normal configuration for two reasons. What are they?
    • Function
    • Esthetics
  4. Orthognathic operations are most commonly found in the _____
    Mandible
  5. What is the most commonly performed orthographic procedure?
    Sagittal Split Osteotomy
  6. _____ ___ ___  increased popularity instead of MMF
    Rigid Internal Fixation
  7. One of the most common deformities you’ll see is associated ______
    Mandibular dysplasia (overgrowth, undergrowth, asymmetry)
  8. This deformity may require EXIT since it can be so bad they are born without an airway
    Micrognathia
  9. What procedure do you use when the discrepancy is too large for a BSSO
    Distraction osteogenesis
  10. Procedure where you create osteotomy in the posterior body or ramus are then have a 5-7 day latency period, expansion of 1 mm per day and then a consolidation phase of 1 month and removal of the appliance
    Distraction Osteogenesis

     you insert a little expander on the jaw and turn the key little by little and the device expands and the bone expands 1 mm per day and the bone heals all the time
  11. Disadvantages of Distraction Osteogenesis (3)
    • Two surgeries at least--Pain-discomfort and Expensive 
    • Less precise reults --open bite and asymmetries
    • Increased time comittment--patient surgeon ortho
  12. Surgery that can make dramatic facial change w/ relatively minor surgery—mostly cosmetic, made below the teeth
    Genioplasty
  13. T/F: Genioplasty is mostly cosmetic and has nothing to do with occlusion
    TRUE
  14. If you don't have enough AG for genioplasty what do you need to do?
    Graft first
  15. What surgery is good for people needed an BSSO but can't tolerate any paresthesia following it?
    Transoral Vertical Ramus Osteotomy
  16. How can we get away with fracturing the maxilla?
    A lot of blood supply to the maxilla
  17. How long does bone take to heal?
    4-6 weeks 

    Until it is solid screws and plates keep it in place
  18. Skeletal anchorage has what level of evidence
    Level III evidence
  19. Incision for genioplasty should be at least ___ facial to depth of vestibule
    1 cm
  20. Why is skeletal anchorage significant? (7)
    • Easily removed
    • Does not depend on patient compliance
    • Does not depend on existing dentition
    • Continuous force 
    • Fairly easy and simple surgical procedure 
    • Relatively inexpensive 
    • Don't need to wait for osseointegration
  21. Rationale for segmental surgery considerations in the maxilla (5)
    • Transverse discrepancy 
    • Vertical abnormalities 
    • Extraction space
    • Tooth angulation 
    • Asymmetry--dental arch form/skeletal
  22. Indications for surgical assisted RPE (3)
    • transverse discrepancy 
    • arch length discrepancy 
    • no other vertical to AP abnormalities
  23. Advantages for surgical assisted RPE (2)
    • Good stability 
    • Can be done outpatient/in office
Author
arikell
ID
351498
Card Set
Orthognathic Surgery (Dr. Costello)
Description
Final Exam Material
Updated