Surgery In patients with facial disproportion producing malocclusion A an osteotomy alone in the mandibular ramus can be used to close an anterior open bite. B a sagittal split osteotomy commonly produces inferior dental nerve paraesthesia C an intra oral vertical sub sigmoid osteotomy is appropriate for treating mandibular retrognathia. D following a down fracture of the maxilla at Le Fort I level the blood supply to the alveolus relies only on the integrity of the greater palatine artery 💡 Explanation In patients with facial disproportion producing malocclusion ✓ Correct Answer: B. a sagittal split osteotomy commonly produces inferior dental nerve paraesthesia