Flashcards on Orthognathic Surgery for Craniofacial Deformities
Orthognathic Surgery for Craniofacial Deformities Guide
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Cleft and Craniofacial Orthognathic Surgery
88 cards
Card 1
Question: What dentofacial deformity is most typical in the cleft lip population and often requires orthognathic surgery?
Answer: Maxillary retrusion resulting in class III malocclusion; 25–30% have midface retrusion severe enough to require orthognathic surgery.
Card 2
Question: When should orthognathic surgery ideally be performed in cleft and craniofacial patients?
Answer: After facial (skeletal) growth is complete to achieve predictable outcomes and avoid additional surgery at maturity.
Card 3
Question: If orthognathic surgery is performed before skeletal maturity, what is a likely consequence?
Answer: There is a high likelihood that additional (though possibly less complicated) surgery will be required when the patient reaches skeletal maturity.
Card 4
Question: What directional movements should treatment favor to achieve class I occlusion while minimizing premature aging?
Answer: Expansive movements (anterior and inferior repositioning) rather than contractile movements (superior and posterior repositioning).
Card 5
Question: Define orthognathic surgery.
Answer: Surgical movement of the tooth-bearing segments of the maxilla and mandible to correct dentofacial deformities not treatable by orthodontics alone.
Card 6
Question: How does the timing of maxillofacial skeletal maturation progress (cranial-to-caudal)?
Answer: Cranial vault near adult size in early adolescence, upper face in early teen years, maxilla in mid-teens, and mandible in late teen years.
Card 7
Question: How does dental eruption relate to craniofacial skeletal maturation?
Answer: Dental eruption follows a similar stepwise pattern: mixed dentition (6–12 years) to permanent dentition (12–20 years), mirroring maxillofacial maturat
Card 8
Question: How can changes in tooth position during development affect facial growth?
Answer: Alteration of tooth position can change the direction of growth of both the maxilla and mandible by providing regional signals to the alveolus that st
Card 9
Question: What two processes underlie osteogenesis of the maxillofacial skeleton?
Answer: Intramembranous ossification and endochondral ossification.
Card 10
Question: Which facial structures primarily arise by intramembranous ossification?
Answer: The cranial vault, upper face, midface, and the majority of the mandible.