Maxillofacial Plastic and Reconstructive Surgery
- Volume 18 Issue 4
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- Pages.679-700
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- 1996
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- 2288-8101(pISSN)
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- 2288-8586(eISSN)
AN EXPERIMENTAL STUDY OF ELECTROPHYSIOLOGICAL AND HISTOLOGICAL ASSESSMENT ON THE INJURY TYPES IN RABBIT INFERIOR ALVEOLAR NERVE
가토의 하치조 신경 손상 형태에 따른 전기생리학적 및 조직학적 변화에 관한 실험적 연구
- Lee, Jae-Eun (Dept. of Oral and Maxillofacial Surgery, School of Dentistry, Wonkwang University) ;
- Lee, Dong-Keun (Dept. of Oral and Maxillofacial Surgery, School of Dentistry, Wonkwang University)
- Published : 1996.12.31
Abstract
Inferior alveolar nerve dysfunction may be the result of trauma, disease, or iatrogenic injury. Inferior alveolar nerve injury is inherent risk in endodontic therapy, orthognathic surgery of the mandible, and extraction of mandibular teeth, particularly the third molars. The sensory disturbances of inferior alveolar nerve associated with such injury have been well documented clinical problem that is commonly evaluated by several clinical sensory test including Tinels sign, Von Frey test(static light touch detection), directional discrimination, two-point discrimination, pin pressure nociceptive discrimination, and thermal test. These methods used to detect and assess inferior alveolar nerve injury have been subjective in nature, relying on the cooperation of the patients. In addition, many of these techniques are sensitive to differences in the examiners experience and skill with the particular technique. Data obtained at different times or by different examiners are therefore difficult to compare. Prior experimental studies have used electro diagnostic methods(sensory evoked potential) to objectively evaluate inferior alveolar nerve after nerve injury. This study was designed with inferior alveolar nerve of rabbit. Several types of injury including mind, moderate, severe compression and perforation with 19 gauze, 21 gauze needle and 6mm, 10mm traction were applied for taking the sesory evoked ppterntial. Latency and amplitude of injury rabbit inferior alveolar nerve were investigated with sensory evoked potential using unpaired t-test. The results were as follows : 1. Intensity of threshold (T1) was