Conference Presenters
"Jaw–metry: Triangulating Tmj Positions with EMG"
- Dr. Gauri Bhatia
- India
Biography
Dr. Gauri Bhatia is a skilled neuromuscular dentist with a Master's in Endodontics. She completed her fellowship at the International College of Craniomandibular Orthopedics (ICCMO) in 2022 and has since then dedicated her practice to aesthetic and functional rehabilitation based on neuromuscular principles.
Dr. Bhatia's passion for creating beautiful smiles led her to seek advanced training with renowned aesthetic dentist Dr. Christian Coachman. She is currently completing her Mastership program under Dr. Coachman's guidance. Dr. Bhatia's expertise lies in combining the principles of neuromuscular dentistry with digital smile design. This approach allows her to create holistic rehabilitation plans that address overall function while enhancing the patient’s aesthetics.
Abstract
Temporomandibular disorders (TMD) are a group of orofacial pain conditions which are the most common non-dental pain complaint in the maxillofacial region. It is important to determine the optimal position of the jaw and the most reproducible position of the jaw.
Centric relation is the most common position adapted by the dentists and is defined as the most retruded relation of the mandible to the maxilla when the condyles are in the most posterior unstrained position in the glenoid fossa from which lateral movements can be made, at any given degrees of jaw separation.
Phonetics bites have been a long standard method used by dentists who needed to find a upper to lower jaw relationship when fabricating prosthetic dentures for their edentulous patients. Phonetic bite is recorded by repeating few words and determining the phonetic bite trajectory by using phonetic sounds like 66,67,68,69 or San Fransico or Mississippi.
Myocentric is a concept in dentistry based on a physiologic neuromuscular viewpoint of dentistry. It is a physiologic position determined by bilaterally isotonic myotrajectory. The Temporomandibular Joint, normally functions in a myocentric physiologic position. Myocentric position is a physiologic unstrained position that is inherently stable for both the temporomandibular joints, muscles and teeth (occlusion).
I conducted this research on 20 patients to compare the EMG at Centric relation, phonetic bite and myocentric position. For the purpose of this research , the EMG muscle levels at various jaw positions were measured by using jaw tracking technology (Myotronics K7, Kinesograph) and SEMG( Myotronics, K7) and myomonitor (J5). By conducting a comparative analysis of the measurements, we determined that the average of the recorded EMG readings at the myocentric position was the most bilaterally isotonic position of the jaw followed by phonetic and centric relation.
It’s a Comparison Of EMG’s At Various Positions (Centric Relation, Phonetic Mandibular Jaw Position And Myocentric Jaw Position) In TemporoMandibular Joint Disorder Patients
