title: Retrospective study of changes in the sensitivity of the oral mucosa: sagittal split ramus osteotomy (SSRO) versus intraoral vertical ramus osteotomy (IVRO).
abstract: We investigated changes in the sensitivity of cutaneous points and the oral mucosa after sagittal split ramus osteotomy (SSRO) and assessed the differences between SSRO and intraoral vertical ramus osteotomy (IVRO). The subjects included in this study were 46 patients with mandibular prognathism who underwent IVRO (88 rami) and 30 patients who underwent SSRO (59 rami). An objective evaluation of the neurosensory status of each patient was completed preoperatively and at 1, 4, 8, 12, and 24 weeks postoperatively. Other variables studied for each patient included sex, age, magnitude of mandibular setback, and amount of blood loss during surgery. We found that a neurosensory recovery occurred earlier in the oral mucosa than at cutaneous points. The number of oral mucosa points showing reduced neurosensory function and neurosensory disturbance after SSRO was significantly higher than after IVRO at 1, 4, and 8 weeks (P<0.05). The nerve recovery observed after SSRO was delayed for a longer period than that noted in our previous study of IVRO. In conclusion, we found changes in sensitivity at cutaneous points and the oral mucosa after SSRO and assessed the differences between SSRO and IVRO.
authors.affiliation: Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan. Electronic address: hasetaku@med.kobe-u.ac.jp.
authors.forename: T
authors.initials: T
authors.lastname: Hasegawa
authors.affiliation: Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan.
authors.forename: C
authors.initials: C
authors.lastname: Tateishi
authors.affiliation: Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Asai
authors.affiliation: Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Imai
authors.affiliation: Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan.
authors.forename: N
authors.initials: N
authors.lastname: Okamoto
authors.affiliation: Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan.
authors.forename: A
authors.initials: A
authors.lastname: Shioyasono
authors.affiliation: Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan.
authors.forename: A
authors.initials: A
authors.lastname: Kimoto
authors.affiliation: Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Akashi
authors.affiliation: Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Suzuki
authors.affiliation: Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Furudoi
authors.affiliation: Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Komori
mesh_terms: D000293:Adolescent; D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009061:Mouth Mucosa / Q000294:innervation*; D010027:Osteotomy / Q000379:methods*; D059229:Osteotomy, Sagittal Split Ramus; D011183:Postoperative Complications / Q000453:epidemiology*; D011378:Prognathism / Q000601:surgery*; D012678:Sensation Disorders / Q000453:epidemiology*
keywords: Semmes–Weinstein pressure aesthesiometer; intraoral vertical ramus osteotomy; neurosensory disturbance; sagittal split ramus osteotomy; sensitivity