Home | About OC | Continuing Education | Course Schedule | Registration | Accommodations | About Dr. Chan | Study Club | Doctor Education | Patient Education | Vision | Research Group | Science | Orthodontics | Laboratory | Dr. Chan’s Articles | GNM Dentistry | Contact Us
Electrosonograpy (ESG) is another measuring tool which allows the GNM trained dentist to better understand the dynamic functional movements of the temporomandibular joints. Temporomandibular joint derangement problems can be quantified beyond static MRI data. These tests and recordings can assist in identifying early, mid and late opening clicks and pops. ESG is able to also quantify early, mid and later closing (recipricol) clicks and pops. Grating, crepitus (bone on bone) sounds within the TM Joint can be recorded.
The left window of 4 ESG recordings shows late closing joint sounds occurring in the right joint (blue) before orthotic treatment.
The right window of 4 ESG recordings show improved later closing recipricol joint sounds after GNM orthotic treatment.
Four consecutive open closing cycles are recorded using K7 ESG (electrosonography, Myotronics, Inc., Kent, WA). These joint sound recordings distinguish specific left and right temporomandibular joints sounds and characteristic signature patterns. Velocity, timing, amplitude, duration and frequency are accurately documented and used to detect and distinguish high and low frequency as well as high and low amplitude signature sound patterns. Severe degenerative joint (DJD) patterns are distinguished by low amplitude high frequency patterns (bone grating on bone).
Recording of joint sounds is part of a recommended screening examination for TMD patients and is the “standard of care” during examination of TMD patients. Standards for the history, examination, diagnosis and treatment of temporomandibular distorders (TMD) published by the American Academy of Head and Neck and Facial Pain indicates (1990), “Digital Sonography may be used to record and analyze temporomandibular joint sounds providing the doctor with valuable information for diagnosis and treatment planning”.
_______________________________
Read more on:
- Physiologic Standards that Validate Treatment Stability
- Science of K7 Electro-Diagnostic Instrumentation
- Low Frequency J5 Myomonitor TENS
- Science of Electromyography (sEMG)
- Science of Computerized Mandibular Scanning (CMS)
- Science of Electrosonography (ESG)
- Computerized Electro-Diagnostic Instrumentation
9061 West Post Road, Las Vegas, Nevada 89148 United States Telephone: (702) 271-2950
Leader in Gneuromuscular and Neuromuscular Dentistry