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On our News Site you will find recent information about interesting Postgraduate Education in Restorative Dentistry and Occlusion and related Subjects.
Should you have any suggestions or know about Postgraduate Courses of general Interest for our members, please send a short email message to our Secretary's office
We will be glad to publish your information about postgraduate courses on our News site.
Dr. Peter W. Jermann, Switzerland
Dental Esthetics Consulting
INTERNET POSTGRADUATE COURSES
Postgraduate Course John Kois and other outstanding International Lecturers on the INTERNET
Continuing Education Courses USA
WORLDWIDE CONTINUING EDUCATION
 Update December 2008
 ICDE International Center for Dental Education Ivoclar - Vivadent
CE Center of Periodontology - Lucerne - Switzerland - Prof. Dr. U. Zappa
please refer to zappa@magnet.ch for more information
2010 USA
American Equilibration Society Meeting - Chicago Mariott Hotel Downtown
Chicago Midwinter Meeting - Mc Cormick Convention Center - Chicago
PUBLICATIONS AND ARTICLES
Dental ceramics and the molar crown testing ground
Thompson, Van P.; Rekow, Dianne E.
OCCLUSION AND MUSCLE ACTIVITY
Tooth grinding
Tooth Grinding and its consequences is being ignored!
Dr. Gordon Christensen states in an interview published in 'Dentistry Today' that . . . "Occlusion remains the major untreated disease in dentistry. We probably treat caries too much; we treat periodontial disease a little bit; and we don't even talk about occlusion. Occlusal disease affects at least one-third of the population , those who have bruxism and clenching, and it is time that the profession becomes more involved in this area of dentistry. (The Journal of the American Dental Asociation, February 2000.)
Canine risers to restore canine disclusion (pdf doc)
Article by Dr. John Nasedkin, DDS, Vancouver, Canada
Antidepressants
Commonly used antidepressants including Prozac, Paxil and Zoloft may cause bruxism (tooth grinding) and associated headaches. (Journal of Clinical Psychiatry, January 2000).
TMD and Occlusion
Nassif N. Perceived malocclusion and other teeth-associated signs and symptoms in TMD, Compendium 22 (7): 577-585,2001
Teeth-associated signs and symptoms include a perceived awareness of malocclusion, bruxism and tooth sensitivity. 75 patients were treated with an anterior programming device, a centric relation occlusal device, and when necessary a selective occlusal equilibration. The majority of patients showed significant improvement in TMD symptoms and those with teeth-associated symptmoms demonstrated a marked reduction in these symptoms after treatment. About half of the patients who had difficulty in making lateral gliding articulation movements with the occlusal device out of the mouth had this resolved after removal of centric occlusal interferences. Improvement in the malocclusion symptoms resulted when occlusal device therapy was followed by a selective occlusal equilibration. It is recommended that teeth associated signs and symptoms be taken into consideration if extensive or invasive dental therapy is planned.
N. Joseph Nassif, Department of Prosthetic Sciences, College of Dentistry, King Saud University, Riyadh, Saudi Arabia
TMD / Medication - Botulinum toxin
Freund B., Schwartz M, and Symington JM. Botulinum toxin: new treatment for temporomandibular disorders. Brit J Oral Maxillofac Surg 38: 466-471, 2000
Temporomandibular disordrers (TMDs) cause chronic pain in both muscle and bone of the face and jaws. TMD is difficult to treat and most treatments to date are not very effective and/or cause negative side effects. A new treatment is needed that has high specificity and tolerable side effects. One possible solution is botulinum toxin A (BTX-A), a presynaptice neurotoxic that causes dose-dependent weakness or paralysis in skeletal muscle by blocking the calcium-mediated release of acetylcholine from motor nerve endings. Side effects are rare but can include transient weakness, nausea, and pruritis. BTX-A was injected into both masseter muscles (50U) and both temporalis muscles (25 U) in 46 patients with TMD. These injections produced significant improvements in pain (87%), function (87%), mouth opening, and tenderness to palpation (96%). Maximum voluntary contraction initially diminished then returned to the initial values. It is believed that by reducing both the power and duration of effective contraction of the injected muscles, BTX-A may indirectly inhibit centrally motivated painful muscular activity. Indirect reduction in joint inflammation may be a main factor in the increase in maximal opening. Pain relief, rather than muscular weakness, is believed to be more responsible for the improvement in functional ability.
Brian J. Freund, Oral and Maxillofacial Surgeon, 844 merritton Road, Suite 100, Pickering, Ontario, Canada LIV 1B
Muscle Tension - Hyperactivity - TENS
Kamyszek G., Ketcham R, Radke J. Electromyographic evidence of reduced muscle activity when ULF-TENS is applied to the Vth and VIIth cranial nerves. J Craniomandib Pract 19(3): 162-168,2001
Muscle tension hyperactivity, commonly associated with disorders of the stomatognathic system, can be treated in a variety of ways. One muscle relaxation method, Ultra Low Requency (ULF) Transcutaneous Electrical Neural Stimulation (TENS), can be used to apply a brief electrical stimulus to the motor fibers of the Vth and VIIth cranial nerves at a rate of approximately once per second. In this study, the authors measured electromyographic (EMG) signals before and after application of ULF-TENS for 30-40 minutes. Digital filtering of the signals to remove all noise components obtained acuurate resting EMG values even when real levels fell below one microvolt.
The results showed that ULF-TENS had an activity-reducing efect on the resting EMG levels of both hyperactive (by almost half) and relaxed muscles. Because relaxed muscles even showed a decrease at 2.0 microvolts or under, the patients were not relaxed at their minimum levels. The minimum level appeared to be around 1 microvolt. However, 2.0 microvolts still apears to be useful as a marker because the mean EMG level of those pateints with no muscle >2.0 microvolts did not significantly change. Only 3 of 4 muscle groups showed a change in signal, perhaps indicating it takes more than 30-40 minutes of pilsing time for some muscles to relax.
John Radke, BioResearch Associates, Inc., 4114 N. Port Washington Rd, Milwaukee, WI 53212
TMJ/TMD
The NTI Tension Suppression System
Cleared by the FDA for Prevention of Medically Diagnosed Migraine Pain and Jaw Disorders
through reduction of trigeminally innervated muscular activity
Chewing ability score
Kurita H, Ohtsuka A, Kurashina K & Kopp S. Chewing ability as a parameter for evaluating the disability of patients with TMD. J.Oral Rehabil 28:463-465,2001
Not enougn attention has been paid to restoration of chewing ability because there was no easy and reliable method to evaluate this ability. The authors have developed a simple questionnaire that produces a score of chewing ability (SCA) by asking patients about the difficulty in chewing 19 kinds of food. A previous study found that successfully treated patients showed a significant increase in the score. In this study, SCA correlated significantly with TMJ pain and mouth opening capacity but not with TMJ noise and muscle tenderness. Therefore, this questionnaire may be useful and should be included in the routine clinical evaluation of TMD patients to evaluate a patient's chewing ability.
(Hiroshi Kurita, Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, Japan, hkurita@hsp.md.shinshu-u.ac.jp)
| Electronic Document Format (ISO) |
THOMPSON, Van P. and REKOW, Dianne E. Dental ceramics and the molar crown testing ground. J. Appl. Oral Sci. [online]. 2004, vol.12, no.spe [cited 08 April 2005], p.26-36.
ISSN 1678-7757. |
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