The changes in electrical activity of the postural muscles of the mandible upon varying the vertical dimension

Manns, Arturo; Miralles, Rodolfo; Guerrero, Fernando

doi:10.1016/0022-3913(81)90109-8

Cited by 102 publications

(52 citation statements)

References 12 publications

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“…Furthermore, during trial 3, the postural eontraetile activities of the elevator muscles showed some deerease (Table 2). These observations are consistent with the faet that raising of the bite, as occurs with the insertion of an oeelusal splint, results in decreased postural activity in the mandibular elevator museles and increased postural aetivity in the mandibular depressor muscles (Garnick & Ramfjord, 1962;Manns et al, 1981;Rugh & Drago, 1981;Plesh et al, 1988). Table 4 shows that the highest clinical resolution of the recorded myoelectric activities was that pertaining to trial 3, probably because of a stabilizing effeet of the ocelusal splint (Dahlstrom, 1984).…”

Section: Discussionsupporting

confidence: 80%

Postural contractile activities of human jaw muscles following use of an occlusal splint

Carr

Christensen

Donegan

et al. 1991

J of Oral Rehabilitation

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As induced by an occlusal splint over a period of 1 week, this study monitored surface electromyographic changes in the postural contractile activities of jaw elevator and depressor muscles in six healthy adults. The immediate effect of the occlusal splint was to increase the postural contractile activities of the suprahyoid muscles. All postural muscle activities showed wide-ranging biological variation, but the activities induced by the splint tended to stabilize within 1 week, with decreased postural activities in the masseter and anterior temporalis muscles, and increased postural activities in the suprahyoid muscles.

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Section: Discussionsupporting

confidence: 80%

Postural contractile activities of human jaw muscles following use of an occlusal splint

Carr

Christensen

Donegan

et al. 1991

J of Oral Rehabilitation

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“…It is characterized by minimal electrical activity and an interocclusal space between the incisors of 5 to 12 mm. It depends, however, on the experimental conditions and the muscle type examined (Manns et al, 1981;Rugh and Drago, 1981;Van Sickels et al, 1985;Plesh et al, 1988). This represents a much greater distance than the usual free-way space (or interocclusal distance) ( Fig.).…”

Section: Regulations and Changes In The Habitual Mandibular Positionmentioning

confidence: 99%

Regulation of Mandibular Postures: Mechanisms and Clinical Implications

Woda¹,

Pionchon²,

Palla

2001

Critical Reviews in Oral Biology & Medicine

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This review argues that (1) the habitual mandibular position is constantly variable and so cannot be considered as a craniomandibular reference point, (2) there is no unique centric relation, (3) mandibular posture greatly depends on head posture, (4) clinical evaluation of the occlusal vertical dimension is mostly empirical, and (5) neither the vertical dimension at rest nor the centric relation can be determined by means of existing instrument-based clinical methods. However, some physiological conditions exist that facilitate the recording of craniomandibular position.

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“…[11][12][13][14] Actually, it is well known that clinical rest position is always more cranially located than EMG rest position, with an average difference of 6 mm 13 or 6.3 mm. 14 Therefore, clinical rest position was not at a position where jaw muscle activity was minimal.…”

Section: Electromyographic Evaluation Of Anterior Temporal and Suprahmentioning

confidence: 99%

Electromyographic Evaluation of Anterior Temporal and Suprahyoid Muscles Using Habitual Methods to Determine Clinical Rest Position

et al. 2007

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The purpose of this study was to compare the electromyographic (EMG) activity of the anterior temporal and suprahyoid muscles using habitual methods to determine the clinical rest position. The sample included 26 healthy subjects with natural dentition, bilateral molar support, and bilateral molar Angle Class I occlusion. Bipolar surface electrodes were located on the right anterior temporal and suprahyoid muscles for EMG recordings. In each subject EMG activity was recorded while standing while performing the following jaw posture tasks: during light occlusal contact in the intercuspal position; during and after pronouncing the word Mississippi, during and after pronouncing the Spanish terms Sesenta y seis (English translation: sixty six); during and after pronouncing the word, business, during and after swallowing of saliva; and while maintaining their mandible in a relaxed posture. Anterior temporal EMG activity in the intercuspal position was significantly higher than all the other conditions. The same was observed in the suprahyoid muscles excepting after pronouncing the words Mississippi, and business. EMG activity recorded in the clinical rest position by means of phonetic methods, swallowing of saliva and maintaining the mandible in a relaxed posture did not show a significant difference. From an EMG point of view any of these methods could be used to determine clinical rest position.

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The changes in electrical activity of the postural muscles of the mandible upon varying the vertical dimension

Cited by 102 publications

References 12 publications

Postural contractile activities of human jaw muscles following use of an occlusal splint

Postural contractile activities of human jaw muscles following use of an occlusal splint

Regulation of Mandibular Postures: Mechanisms and Clinical Implications

Electromyographic Evaluation of Anterior Temporal and Suprahyoid Muscles Using Habitual Methods to Determine Clinical Rest Position

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