Journal of the Korean Association of Oral and Maxillofacial Surgeons

  • 제30권6호
  • /
  • Pages.488-496
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  • 2004
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  • 2234-7550(pISSN)
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  • 2234-5930(eISSN)
대한구강악안면외과학회 (The Korean Association of Oral and Maxillofacial Surgeons)
권호 표지

디지털 적외선 체열 검사를 사용한 하치조 신경 손상의 평가

ASSESSMENT OF INFERIOR ALVEOLAR NERVE DAMAGE USING DIGITAL INFRARED THERMOGRAPHIC IMAGING

  • 이지연 (단국대학교 치과대학 구강악안면외과학교실) ;
  • 이재훈 (단국대학교 치과대학 구강악안면외과학교실) ;
  • 김철환 (단국대학교 치과대학 구강악안면외과학교실)
  • Lee, Ji-Yeon (Department of Oral & Maxillofacial Surgery, School of Dentistry, Dankook University) ;
  • Lee, Jae-Hoon (Department of Oral & Maxillofacial Surgery, School of Dentistry, Dankook University) ;
  • Kim, Chul-Hwan (Department of Oral & Maxillofacial Surgery, School of Dentistry, Dankook University)
  • 발행 : 2004.12.31
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초록

Oral & Maxillofacial surgery can lead to complications that result in abnormal sensation or movement. Inferior alveolar nerve(IAN) injury can result in dysesthesia, paresthsia of the lower lip and chin, so patients presenting with IAN damage suffer from sensory loss. But diagnosis of the nerve injury is largely limited to the subjective statements made by the patient. Distribution of sympathetic nerves parallels the distribution of the somatosensory nerves. Loss of sensory tone causes a concomitant loss of sympathetic activity, resulting in vasodilation of the cutaneous blood vessels that demonstrates greater heat loss. Digital infrared thermographic imaging(DITI) detects infra-red radiation given off by body. DITI can detect minute difference in temperature from different parts of the body and translates the amount of heat into quantitative data. The area of different temperature correlated with pain or disease can be visualized by corresponding color. The objective of this study was to determine the efficacy of DITI in objectively assessing IAN injury. The 19 normal subjects and the 14 patients underwent DITI scan. The normal subjects received unilateral IAN block anesthesia with 2 ml of 2% lidocaine (IAN bolck group) to evaluate temporary alteration in nerve function. Patient group were patients with unilateral IAN damage (dysesthesia or paresthesia) after surgical treatment(Mn. 3rd molar Extraction, etc.). The surgical procedure performed within 6 months of test. The results were as follows. 1. No significant differences in temperature were found between left and right sides of the lower lip and chin in the control group. 2. Significant temperature differences were found between the anesthetized and non-anesthetized sides of the lower lip and chin in the IAN block group. 3. Significant temperature differences were found between the involved and uninvolved sides of the lower lip and chin areas of the experimental group. The results of the study show that DITI can be an useful and effective means of objectively assessing and visualizing IAN damage.

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