The jaw joint (or temporomandibular joint) is not a fixed hinge, but a more complex structure where the location of the axis of rotation changes and simultanously translates as the jaws opens.
Meet Philip H. Levy, DDS
Developer of the "Levy Lingual Shelf," and a noted lecturer, teacher and clinician, Dr. Levy has made an intensive study of the stomatognathic system.
A 22-page monograph by Dr. Philip Levy explanding upon his presntation in the Symposium on "An Alterable Centric Relation In Denistry." Includes case studies of patients and follow-up care for up to 11 years post-treatment.
Dr. Philip Levy was a Guest Editor for a Symposium on "An Alterable Centric Relation In Denistry" published in the July 1975 issue of the Dental Clinics of North America.
The issue includes 10 articles contributed by respected educators and researchers in the fields of physiology, anatomy, endocrinology, and history.
Below are some case studies relating to the TMD symptoms that Dr. Levy treated. You can clearly see the nice transition from the beginning to the end and how Dr. Levy accomplished the task.
Situation: Patient presented with severe multiple TMD symptoms, wearing an orthopedic neck brace.
Profile photo of patient, pre-treatment.
Intra-oral photo of patient pre-treatment shows severe Class II, division 1 occlusion with loss of interdental height.
Lingual shelf augmented with removable appliance with inclined plane.
Finished case. Note the eruption of posterior teeth compared to previous photo.
Front view post-treatment.
Actual patient documentation of symptoms and muscle involvement during the first 23 months of treatment. Note the radical diminuation of symptoms and muscle involvement. Intercisal opening increased 10mm over time.
Dramatic post-treatment photo shows cosmetic improvement from starting photos. See patient records (at left) documenting complete symptom elimination during treatment period.
Radiograph of TMJ at the start of treatment.