I have tried to make electronic listening and analyzing appratus, which were used for temporomandibular disorder patient’s. It can be heard T.M.J.D’s sounds. Normal person heard 20~20,000 Hz sound. Electronic appratus can capture furthermore. Electronic appratus composed of stethoscope rubber tube,small microphone, amplifier, telemetry, oscilloscope and speaker. The aim of oscilloscope and speaker are seen and heard T.M.J. sounds both dentists and patients.In developing countries, they use electronic stethoscope for diagnosis of heart sound and use for tele diagnosis. In my nation, laws of food and drugs were very rigid, so many researcher’s developed electronic stethoscope, but they could not produce it because of law. I suggest that soften the rigid law, and many new product will be produced. The apparatus that I developed was operated quite well both wired and wireless. It is suggested that we must develop new apparatus for T.M.D. patients and Telemedicine.

Ⅰ. INTRODUCTION
 II. MATERIALS and METHODS
  1. Data acquisition method.
 III. RESULTS
  1. 하악운동 기록기 (M.K.G)
  2. 근전도 (E.M.G)
  3. MRI(magnetic resonance image)
  4. 오실로스코프
 IV. DISCUSSION
 Ⅴ. CONCLUSION
 REFERENCES

• 이석준(단국대학교 체육대학 국제스포츠학과) | Suk Jun Lee
• 박환규(단국대학교 치과대학 구강생리학교실) | Hwan-Gyoo Park
• 천재식(단국대학교 치과대학 구강생리학교실) | Gae-Sig Chun Correspondence