The effects of changing position and angle of the proximal segment after intraoral vertical ramus osteotomy

Abstract The authors evaluated changes in position and angle of the proximal segment, including the condyle, after intraoral vertical ramus osteotomy (IVRO) with and without a Le Fort I osteotomy to verify whether displacement of the proximal segment could induce postoperative complications. Changes...

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Bibliographic Details
Published in:International journal of oral and maxillofacial surgery 2009-10, Vol.38 (10), p.1041-1047
Main Authors: Ueki, K, Hashiba, Y, Marukawa, K, Nakagawa, K, Alam, S, Okabe, K, Yamamoto, E
Format: Article
Language:English
Subjects:
Adolescent
Adult
Biological and medical sciences
Cephalometry
Cranial Nerve Injuries - etiology
Dentistry
Evoked Potentials, Somatosensory
Facial Asymmetry - surgery
Female
Humans
Hypesthesia - etiology
hypoesthesia
intra-oral vertical ramus osteotomy
Joint Dislocations - surgery
Lip - innervation
Male
Mandible - abnormalities
Mandible - pathology
Mandible - surgery
Mandibular Condyle - pathology
Medical sciences
Nervous system (semeiology, syndromes)
Nervous system as a whole
Neurology
Orthognathic Surgical Procedures - adverse effects
Orthopedic surgery
Osteotomy - adverse effects
Osteotomy, Le Fort
Otorhinolaryngology. Stomatology
Prognathism - surgery
proximal segment
Surgery
Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases
temporomandibular joint
Temporomandibular Joint Disorders - surgery
Trigeminal Nerve - physiology
Trigeminal Nerve Injuries
Young Adult
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Summary:Abstract The authors evaluated changes in position and angle of the proximal segment, including the condyle, after intraoral vertical ramus osteotomy (IVRO) with and without a Le Fort I osteotomy to verify whether displacement of the proximal segment could induce postoperative complications. Changes in condylar angle, ramus angle, and displacement of proximal segment were measured pre- and postoperatively. The position of the temporomandibular joint (TMJ) disc was examined pre- and postoperatively. Trigeminal nerve hypoesthesia in the lower lip was assessed bilaterally. The postoperative horizontal condylar angle was significantly smaller than the preoperative one on the deviated and non-deviated sides (P
ISSN:0901-5027
1399-0020
DOI:10.1016/j.ijom.2009.04.021