The relationship between the severity of periodontitis and occlusal conditions monitored by the K6 Diagnostic System.

The occlusal conditions of periodontitis patients were investigated by using a computerized monitoring device. Thirty-three mild to severe periodontitis patients were enrolled in the study and they were categorized into three groups by their periodontitis severity. Each subject answered a preliminary questionnaire, received routine dental examinations, and underwent MKG/EMG tests using the K6 Diagnostic System. Clinical manifestations of periodontitis were confirmed by the questionnaire and the routine clinical examinations. According to the MKG tests, the traces of maximum opening distance and vertical freeway space showed no significant statistical difference among the groups. However, the velocity of terminal tooth contact was significantly delayed in the severe periodontitis group. According to the EMG tests, there was no significant difference in the rest mode EMG activities, but the function mode EMG activities significantly weakened in the severe periodontitis group. These results showed that severe periodontitis patients had poor occlusal conditions that might have been triggered by the instability of centric occlusion due to attachment loss.

[1]  J. Ahlgren,et al.  Jaw-closing muscles: electromyographic activity of human subjects with reduced periodontal support. , 1994, Journal of oral rehabilitation.

[2]  C. Sforza,et al.  Statistical evaluation of some mandibular reference positions in normal young people. , 1992, The International journal of prosthodontics.

[3]  W. Donlon,et al.  Comparison of clinical characteristics in myogenic, TMJ internal derangement and atypical facial pain patients. , 1990, The Clinical journal of pain.

[4]  J. P. Lund,et al.  Devices for the diagnosis and treatment of temporomandibular disorders. Part II: Electromyography and sonography. , 1990, The Journal of prosthetic dentistry.

[5]  W D McCall,et al.  Devices for the diagnosis and treatment of temporomandibular disorders. Part I: Introduction, scientific evidence, and jaw tracking. , 1990, The Journal of prosthetic dentistry.

[6]  A. Miller,et al.  Patterns of mandibular movements in subjects with craniomandibular disorders. , 1990, The Journal of prosthetic dentistry.

[7]  E Aida,et al.  [Basic investigation using K6 diagnostic system. Part I. Monitoring three-dimensional accuracy]. , 1988, Aichi Gakuin Daigaku Shigakkai shi.

[8]  Y. Igarashi,et al.  [Restoration of the "supporting zone" of the mandible in partially dentate mouth (Part 4). "Supporting zone" of periodontally and occlusally insufficient individuals]. , 1987, Showa Shigakkai zasshi = The Journal of Showa University Dental Society.

[9]  T. Haraldson,et al.  Periodontal Status and Bruxism , 1987 .

[10]  D. Laskin,et al.  Diagnosis and treatment of myofacial pain-dysfunction (MPD) syndrome. , 1986, The Journal of prosthetic dentistry.

[11]  Y. Igarashi,et al.  [Restoration of the supporting zone of the mandible in the partially edentulous mouth (2). Supporting zone and the stability of intercuspal position]. , 1986, Showa Shigakkai zasshi = The Journal of Showa University Dental Society.

[12]  K. Olsson,et al.  The importance of reflexes and their control during jaw movement , 1983, Trends in Neurosciences.

[13]  A. Polson,et al.  Effect of periodontal trauma upon intrabony pockets. , 1983, Journal of periodontology.

[14]  A. Polson,et al.  Osseous repair in the presence of active tooth hypermobility. , 1983, Journal of clinical periodontology.

[15]  J. Lindhe,et al.  Effect of longstanding jiggling on experimental marginal periodontitis in the beagle dog. , 1982, Journal of clinical periodontology.

[16]  D. van Steenberghe,et al.  The influence of advanced periodontitis on the psychophysical threshold level of periodontal mechanoreceptors in man. , 1981, Journal of periodontal research.

[17]  A. Polson,et al.  Periodontal repair after reduction of inflammation. , 1979, Journal of periodontal research.

[18]  J. Waerhaug.  The infrabony pocket and its relationship to trauma from occlusion and subgingival plaque. , 1979, Journal of periodontology.

[19]  A. Polson,et al.  Alveolar bone regeneration after removal of inflammatory and traumatic factors. , 1976, Journal of periodontology.

[20]  B. Jankelson,et al.  Kinesiometric instrumentation: a new technology. , 1975, Journal of the American Dental Association.

[21]  J. Lindhe,et al.  Influence of trauma from occlusion on progression of experimental periodontitis in the beagle dog. , 1974, Journal of clinical periodontology.

[22]  H. Mitani,et al.  Reflex Responses of the Masseter and Temporal Muscles in Man , 1973, Journal of dental research.

[23]  L. J. Goldberg,et al.  Masseter muscle excitation induced by stimulation of periodontal and gingival receptors in man. , 1971, Brain research.

[24]  P. Tsolka,et al.  A laboratory assessment of recording reliability and analysis of the K6 Diagnostic System. , 1992, Journal of craniomandibular disorders : facial & oral pain.

[25]  J. Combadazou,et al.  [The value of mandibular kinesiography and of T-scanning in the diagnosis and treatment of algo-dysfunctional syndrome of the temporomandibular joint]. , 1990, Revue de stomatologie et de chirurgie maxillo-faciale.

[26]  E. N. Gale,et al.  Reliability of surface electromyography of the masseteric and anterior temporal areas. , 1990, Archives of oral biology.

[27]  Lund Jp,et al.  Evaluation of the use of surface electromyography in the diagnosis, documentation, and treatment of dental patients. , 1989 .

[28]  J. Ahlgren,et al.  A comparison of electromyography recorded parallel and transverse to the fibres of the anterior and posterior temporalis muscle in man. , 1987, Archives of oral biology.

[29]  D. Aeppli,et al.  Association between signs of trauma from occlusion and periodontitis. , 1986, Journal of periodontology.

[30]  H. Björn,et al.  Radiographic determination of periodontal bone destruction in epidemiological research. , 1966, Odontologisk revy.

[31]  S. Ramfjord.  Bruxism, a clinical and electromyographic study. , 1961, Journal of the American Dental Association.