Duration of masseteric silent period in patients with TMJ syndrome

Nocturnal electromyographic evaluation of bruxism patients undergoing short term splint therapy

“…Fuchs (1969) noted a similar result in a brief report; however, he did not provide sufficient quantitative data. Other investigators (Besette, Bishop andMohl, 1971: Beemsterboer et al, 1974) have shown that an abnormal prolongation in the masseteric silent period in patients with 'TM.I Syndrome' was shortened to norttial limits following splint therapy.…”

Jaw elevator silent periods in complete denture wearers and dentate individuals

“…probably appeared when antagonistic teeth contact caused a prolonged vibration and/or minute mandibular sliding movements. Irregular SPs might have appeared if other different receptors were included, such as intraoral mechanoreceptors or pain receptors (Alghren, 1969;Bessette et al, 1971;Bonte and van Steenberghe, 1991;Brenman et al, 1968;Brodin et al, 1991;Cadden and Newton, 1992;Castroflorio et al, 2006;Chong-Shan and Hui-Yun, 1989;Ciancaglini et al, 1989;Dessem et al, 1988;Freesmeyer, 1987;Di Francesco et al, 1986;Fung et al, 1982;Gottlieb et al, 1984;Graven-Nielsen et al, 2000;Munro, 1969, 1971;Haraldson and Ingerwall, 1979;Hellsing and Klineberg, 1983;Hoffman, 1919;van Steenberghe, 1995, 2006;Kamogawa et al, 1988;Karkazis and Kossioni, 1999;Kossioni and Karkazis, 1995a. In this way, during the motoneuron inhibition, additional sensory impulses from other receptors or brain centres have enough time to arrive to the trigeminal motor neuron pool to allow achievement of the optimal strength at a given muscle fibre length or to cause changes of muscle fiber length and/or activation of antagonistic muscles.…”

“…On the contrary, other studies could not prove the prolongation of the silent period in CMD patients and even claimed that the duration of the SP is shorter in CMD patients due to the increased muscular tonus (Hellsing and Klineberg, 1983;De Laat et al, 1985;Lavigne et al, 1983;Sharav et al, 1982). The upper limits of a prolonged SP also varied from study to study, and so did the methods used for SP eliciting (Alajbeg et al, 2005;Alghren, 1969;Bernstein et al, 1981;Bessette et al, 1971;Brenman et al, 1968;Brodin et al, 1991;Cadden and Newton, 1992;Chong-Shan and Hui-Yun, 1989;Ciancaglini et al, 1989;Dessem et al, 1988;Freesmeyer, 1987;Di Francesco et al, 1986;Fung et al, 1982;Gottlieb et al, 1984;Graven-Nielsen et al, 2000;Munro, 1969, 1971;Haraldson and Ingerwall, 1979;Hellsing and Klineberg, 1983;Hoffman, 1919;van Steenberghe, 1995, 2006;Kamogawa et al, 1988;Karkazis and Kossioni, 1999;Kossioni and Karkazis, 1995a,b, 1998De Laat et al, 1985;Lavigne et al, 1983;Louca et al, 1996Louca et al, , 1998Lund, 1991;Matthews and Yemm, 1970;Miles et al, 1987;Muller et al, 1993;Nagasava et al, 1976;…”

“…Although some authors attribute SP eliciting mainly to periodontal receptors' stimulation and/or muscle unloading, it is possible that other receptors play a role in that process (Alajbeg et al, 2005;Bessette et al, 1971;Brenman et al, 1968;Brodin et al, 1991;Cadden and Newton, 1992;Chong-Shan and Hui-Yun, 1989;Ciancaglini et al, 1989;Dessem et al, 1988;Freesmeyer, 1987;Di Francesco et al, 1986;Griffin and Munro, 1971;Jacobs and van Steenberghe, 2006;Karkazis, 1998, 1999;De Laat et al, 1985;Lavigne et al, 1983;Schaerer et al, 1967;Tallgren et al, 1987;Tü rker andMiles, 1985, 1989;Tü rker et al, 1994;Tü rker and Jenkins, 2000;Yoshida, 1998;Widmalm and Hedegard, 1976;Widmalm and Ash, 1985;Yemm, 1972).…”

“…It had been postulated that SP had a longer duration in the patients with CMD than in the healthy individuals and that it might be a tool of diagnostic and prognostic interest (Bessette et al, 1971;Chong-Shan and Hui-Yun, 1989;Widmalm and Hedegard, 1976). On the contrary, other studies could not prove the prolongation of the silent period in CMD patients and even claimed that the duration of the SP is shorter in CMD patients due to the increased muscular tonus (Hellsing and Klineberg, 1983;De Laat et al, 1985;Lavigne et al, 1983;Sharav et al, 1982).…”