The evaluation of surgical factors related to recovery period of upper lip hypoaesthesia after Le Fort I osteotomy

• Ueki, Koichiro

• Hashiba, Yukari

• Marukawa, Kohei

• Nakagawa, Kiyomasa

• Alam, S.

• Yamamoto, Etsuhide

Abstract

金沢大学医薬保健研究域医学系

Purpose: It is unclear whether surgical factors can affect the upper lip sensitivity. The aim of this study was to assess the factors that can affect the recovery period of hypoaesthesia of the upper lip after Le Fort I osteotomy, using trigeminal somatosensory evoked potential (TSEP) objectively. Patients and methods: Twenty-nine patients with mandibular prognathism underwent Le Fort I osteotomy with and without artificial pterygoid plate fracture. Trigeminal nerve hypoaesthesia at the region of the upper lip was assessed bilaterally by the TSEP method. The distance between the infraorbital foramen and the osteotomy line (IO) or the nearest plate/screw position (IP) was measured on three-dimensional computed tomography (CT). The relationship between the recovery period in upper lip hypoaesthesia and surgical factors (these distances, movement amount, pterygoid plate fracture) were analysed statistically. Results: The recovery period in upper lip hypoaesthesia did not significantly correlate with IO, IP and movement amount. There was no significant difference between pterygoid plate fracture group and non-fracture group. Conclusion: Temporary hypoaesthesia of upper lip after Le Fort I osteotomy could not be avoided, however, osteotomy line, plate/screw position and pterygoid plate fracture in Le Fort I osteotomy did not affect the recovery period of upper lip hypoaesthesia with TSEP. © 2008 European Association for Cranio-Maxillofacial Surgery.

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Journal

• Journal of Cranio-Maxillofacial Surgery

  Journal of Cranio-Maxillofacial Surgery 36 (7), 390-394, 2008-10-01

  Elsevier

Keywords

• computed tomography (CT)
• hypoaesthesia
• Le Fort I osteotomy
• trigeminal somatosensory evoked potential (TSEP)
• upper lip

Details

• CRID: 1050564285907246976
• NII Article ID: 120001130406
• NII Book ID: AA10682955
• ISSN: 10105182
• Web Site: http://hdl.handle.net/2297/11737
• Text Lang: en
• Article Type: journal article
• Data Source:
  • IRDB
  • CiNii Articles
  • KAKEN