편측성 측두하악관절장애 환자에서 골스캔을 이용한 교합안정장치 치료효과 예측

Prediction of Splint Therapy Efficacy Using Bone Scan in Patients with Unilateral Temporomandibular Disorder

  • 이상미 (서울대학교 의과대학 분당서울대학교병원 핵의학과) ;
  • 이원우 (서울대학교 의과대학 분당서울대학교병원 핵의학과) ;
  • 윤필영 (분당서울대학교병원 치과 구강악안면외과) ;
  • 김영균 (분당서울대학교병원 치과 구강악안면외과) ;
  • 김상은 (서울대학교 의과대학 분당서울대학교병원 핵의학과)
  • Lee, Sang-Mi (Department of Nuclear Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine) ;
  • Lee, Won-Woo (Department of Nuclear Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine) ;
  • Yun, Pil-Young (Department of Oral and Maxillofacial Surgery, Section of Dentistry, Seoul National University Bundang Hospital) ;
  • Kim, Young-Kyun (Department of Oral and Maxillofacial Surgery, Section of Dentistry, Seoul National University Bundang Hospital) ;
  • Kim, Sang-Eun (Department of Nuclear Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine)
  • 발행 : 2009.04.30

초록

목적: 골스캔이 측두하악관절장애의 예후 예측에 유용한지 알려져 있지 않다. 이 연구의 목적은 편측성 측두하악관절장애 환자에서 예후 예측 인자로서 유용한 골스캔 소견은 무엇인지 알아보는 것이었다. 대상 및 방법 : 2005년 1월부터 2007년 7월에 걸쳐서 편측성 측두하악관절장애로 진단받고 치료 전 골스캔을 시행한 55명의 환자(남:여=9:46; 나이, $34.7{\pm}14.1$세)들을 대상으로 하였다. 양측의 측두하악관절과 두정골 영역에서 $13{\times}13$ 픽셀 크기의 정사각형 관심영역을 그려서 Tc-99m HDP섭취를 정량화하였다. 측두하악관절 섭취비는(측두하악관절 카운트 - 배후영역 카운트) / 배후영역 카운트로 계산하였고 이환된 측두하악관절에 대한 비대칭지표는 이환된 관절과 비이환된 관절 섭취비의 비로 정의하였다. 교합안정장치 시행 6개월 후 임상적 평가를 통해 호전군과 비호전군으로 나누고 골스캔 소견이 이러한 예후에 따라 어떻게 다른지 평가하였다. 결과: 46명의 환자가 호전되었고 9명의 환자는 증상의 호전이 관찰되지 않았다. 호전군과 비호전군간에 이환관절의 측두하악관절 섭취비, 반대편 정상관절의 측두하악관절 섭취비,그리고 비 대칭지표의 유의한 차이는 관찰되지 않았다(p>0.05). 그러나 소그룹 분석에서 이환 측두하악관절에 Tc-99m HDP의 섭취가 증가한 환자들에서는 비대칭지표에 의해 환자군이 구분되었다. 즉, 호전군의 비대칭지표가 비호전군에 비하여 유의하게 증가되어 있었다($1.32{\pm}0.35$ vs. $1.08{\pm}0.04$, p=0.023). 결론: 편측성 측두하악관절장애 환자에서 Tc-99m HDP 골스캔은 시각 분석에서 이환 관절의 섭취가 증가되어 있는 경우 교합안정장치 치료에 대한 예후를 예측할 수 있는 것으로 보인다.

Purpose: It is not known whether bone scan is useful for the prediction of the prognosis of patients with temporomandibular disorders(TMD). The aim of the present study was to identify useful prognostic markers on bone scan for the pre-therapeutic assessment of patients with unilateral TMD. Materials and Methods: Between January 2005 and July 2007, 55 patients(M:F=9:46; mean age, $34.7{\pm}14.1$ y) with unilateral TMD that underwent a pre-therapeutic bone scan were enrolled. Uptake of Tc-99m HDP in each temporomandibular joint(TMI) was quantitated using a $13{\times}13$ pixel-square region-of-interest over TMJ and parietal skull area as background. TMJ uptake ratios and asymmetric indices were calculated. TMD patients were classified as improved or not improved and the bone scan findings associated with each group were investigated. Results: Forty-six patients were improved, whereas 9 patients were not improved. There was no significant difference between the two groups of patients regarding the TMJ uptake ratio of the involved joint, the TMJ uptake ratio of the non-involved joint, and the asymmetric index(p>0.05). However, in a subgroup analysis, the patients with an increased uptake of Tc-99m HDP at the disease-involved TMJ, by visual assessment, could be easily identified by the asymmetric index; the patients that improved had a higher asymmetric index than the patients that did not improve($1.32{\pm}0.35$ vs. $1.08{\pm}0.04$, p=0.023), Conclusion: The Tc-99m HDP bone scan may help predict the prognosis of patients with unilateral TMD after splint therapy when the TMD-involved joint reveals increased uptake by visual assessment.

키워드

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