Sixty-eight years of experimental occlusal interference studies: What have we learned?

Clark, Glenn T.; Tsukiyama, Yoshihiro; Baba, Kazuyoshi; Watanabe, Tokuhiro

doi:10.1016/s0022-3913(99)70012-0

Cited by 122 publications

(89 citation statements)

References 26 publications

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“…Conscious lifestyle changes that eliminate the muscular hyperactivity must be implemented. Prevention or reduction of factors such as bruxism, muscle hyperactivity inflammation has vital , 1997;Clark et al, 1999;Lockwood et al, 2002).…”

Section: Discussionmentioning

confidence: 99%

Theories on Otic Symptoms in Temporomandibular Disorders: Past and Present

2005

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SUMMARY:For many years otic symptoms have been closely observed in TMD clinical practice. This review includes trials that meet eligibility criteria in the field of otic symptoms diagnosed and treated by a stomatognathic focal point. The aim is centered on the implications of the debated cause-effect connection between otic symptoms and TMD offering a probable bond between the TMJ, ear and adjacent structures. The rationalization is based on an embryological and anatomical approach that offers explanations on the otic pathogenic mechanisms symptoms interconnected with TMD. The accompanying reciprocity among disciplines of odontology and otolaryngology is brought together by TMD and otic referred mutual symptomatology as is showed in multiple trials. This research is an attempt that targets the integration of these two health specialties in the diagnosis and treatment of this type of population.

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Section: Discussionmentioning

confidence: 99%

Theories on Otic Symptoms in Temporomandibular Disorders: Past and Present

2005

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“…Special attention is given to the role of the cardiac/autonomic system, as well as to brain cortical electroencephalographic (EEG) activation and the neurochemical processes associated with motoneuron excitability in relation to sleep. The role of peripheral sensory inputs (e.g., periodontal) and of cognitive-behavioral factors (e.g., stress, anxiety, personality) in SB has been covered elsewhere, and we refer readers to recent publications (Clark et al, 1999;Major et al, 1999;Bader and Lavigne, 2000;Kato et al, 2003a).…”

Section: (I) Introductionmentioning

confidence: 99%

NeurobiologicalMechanismsInvolved inSleepBruxism

Lavigne

Kato

Kolta

et al. 2003

Critical Reviews in Oral Biology & Medicine

436

290

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Sleep bruxism (SB) is reported by 8% of the adult population and is mainly associated with rhythmic masticatory muscle activity (RMMA) characterized by repetitive jaw muscle contractions (3 bursts or more at a frequency of 1 Hz). The consequences of SB may include tooth destruction, jaw pain, headaches, or the limitation of mandibular movement, as well as tooth-grinding sounds that disrupt the sleep of bed partners. SB is probably an extreme manifestation of a masticatory muscle activity occurring during the sleep of most normal subjects, since RMMA is observed in 60% of normal sleepers in the absence of grinding sounds. The pathophysiology of SB is becoming clearer, and there is an abundance of evidence outlining the neurophysiology and neurochemistry of rhythmic jaw movements (RJM) in relation to chewing, swallowing, and breathing. The sleep literature provides much evidence describing the mechanisms involved in the reduction of muscle tone, from sleep onset to the atonia that characterizes rapid eye movement (REM) sleep. Several brainstem structures (e.g., reticular pontis oralis, pontis caudalis, parvocellularis) and neurochemicals (e.g., serotonin, dopamine, gamma aminobutyric acid [GABA], noradrenaline) are involved in both the genesis of RJM and the modulation of muscle tone during sleep. It remains unknown why a high percentage of normal subjects present RMMA during sleep and why this activity is three times more frequent and higher in amplitude in SB patients. It is also unclear why RMMA during sleep is characterized by co-activation of both jaw-opening and jawclosing muscles instead of the alternating jaw-opening and jaw-closing muscle activity pattern typical of chewing. The final section of this review proposes that RMMA during sleep has a role in lubricating the upper alimentary tract and increasing airway patency. The review concludes with an outline of questions for future research.

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“…The author further performed theoretical considerations that predicted that the observed contraction patterns would easily lead to frontal plane rotations of the mandible. This was further supported by Clark et al (1999). The conclusion of their literature review was that experimental occlusal interferences may induce transient local tooth pain, loosening of the tooth, a slight change in postural muscle tension levels, chewing stroke patterns, and sometimes a clicking joint.…”

Section: Temporomandibular Disorders and Occlusionmentioning

confidence: 81%