악교정 수술 후 발생하는 신경회복에 대한 연구Ⅰ = Preliminary study of neurosensory recovery after bssro

다국어 초록 (Multilingual Abstract)

Dysfunction of the inferior alveolar nerve indicated by various degree of numbness of the lower lip and chin is one of the few drawbacks of mandibular osteotomy, especially Bilateral Sagittal Split Ramus Osteotomy(BSSRO) and genioplasty. Although it has been recorded throughout the history of this techniques, it is true etiology poorly understood.
In this study, 22 consecutive patients under class III malocclusiion impression and undergoing orthognathic surgery(BSSRO only 11 case, BSSRO with genioplasty 11 case) were studied using 4 neurosensory test(static light touch, directional discrimination, two-point discrimination, pin pressure nociception) with post OP 1 week, 2 weeks,4 weeks, 8 weeks, 12 weeks, 24 weeks, On control group, 10 members without trauma and nerve damage history, nerve test was accomplished.
We concluded majority of patients return of sensation during post operative 24 weeks. Althought immediate nerve deficit are 92.2%, 97.2% 88.9% these are recovered to 25%, 35.72%, 10.71% at 24 weeks. Nerve recovery rate increased prominently between post 4 weeks and 8 weeks. There is no statistically difference about neurosensory deficit among the chin area. Neurosensory deficit more severe when the BSSRO with genioplasty group than the only BSSRO group. Immediate neurosensory deficit is larger left side than right side but after 6 months, there is no significantly difference between left side and right side. Static light touch and pin pressure nociception are more sensitive method of neurosensory deficit than two point discrimination.

목차 (Table of Contents)

• I.서론
• II.재료 및 방법
• 1.연구대상
• 2.신경검사
• 3.통계처리
• III.연구결과
• 1.대조군
• 2.시간 경과에 따른 신경 손상 및 신경 회복양상
• 3.부위별과 시간에 따른 신경손상 및 신경회복의 양상
• 4.하악지 시상분할 절단술 단독 시행군과 이부성형술을 동시에 시행한 군간 신경 손상 및 신경회복의 양상의 비교
• IV.고찰
• V.결론