Korean Journal of Cleft Lip And Palate (대한구순구개열학회지)

Korean Cleft Lip and Plate Association (대한구순구개열학회)
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Evaluation of Sensory Nerve Function Before and after Intraoral Vertico-Sagittal Ramus Osteotomy Using Current Perception Threshold(CPT) Test

구강내하악지수직시상골절단수술 전후 전류역치검사(CPT)를 이용한 지각신경의 변화에 대한 연구

  • Choung Pill-Hoon (Department of Oral & Maxillofacial surgery', College of Dentistry, Seoul National University, Craniofacial Tissue Engineering Laboratory' of BK21 Human Life Science and Intellectual Biointerface Engineering Center) ;
  • Kim Sao-Geol (Department of Oral & Maxillofacial surgery', College of Dentistry, Seoul National University, Craniofacial Tissue Engineering Laboratory' of BK21 Human Life Science and Intellectual Biointerface Engineering Center) ;
  • Seo Byoung-Moo (Department of Oral & Maxillofacial surgery', College of Dentistry, Seoul National University, Craniofacial Tissue Engineering Laboratory' of BK21 Human Life Science and Intellectual Biointerface Engineering Center)
  • 정필훈 (서울대학교 치과대학 구강악안면외과학 교실, BK21 생명공학연구산 악안면 기형재건 조직공학 연구실, 지능형 생체계면연구센터) ;
  • 김수걸 (서울대학교 치과대학 구강악안면외과학 교실, BK21 생명공학연구산 악안면 기형재건 조직공학 연구실, 지능형 생체계면연구센터) ;
  • 서병무 (서울대학교 치과대학 구강악안면외과학 교실, BK21 생명공학연구산 악안면 기형재건 조직공학 연구실, 지능형 생체계면연구센터)
  • Published : 2001.06.01
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Abstract

The design of osteotomy plane in orthognathic surgery has been developed to diminish the nerve injury. Intraoral Vertico-Sagittal Ramus Osteotomy (IVSRO) is the one of the best way to minimize untoward results, which is designed not to expose the lingula. We evaluated the nerve damage before and after with current perception threshold (CPT) test which is modem and numerically expressible way of nerve damages. Sixty patients underwent IVSRO since 1998 were evaluated. They were divided into 2 groups; one group underwent IVSRO only, and the other underwent IVSRO plus genioplasty. The both groups were evaluated with CPT test 1 week before surgery, and 1, 3 and 6 months after surgery. The CPT test was performed on A-beta, A-delta and C fiber respectively. 111e result showed that the recovery of sensory function of damaged nerve fibers was observed at the period of three to six months after surgery. There was no impairment of nerve function after only the IVSRO . But there were sensory disturbances in cases of additional genioplasty group. We thought that one of major factors on nerve damages were exposure of nerve and traction injury during genioplasty.

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