Head position affects the direction of occlusal force during tapping movement.
J Oral Rehabil
; 45(5): 363-370, 2018 May.
Article
en En
| MEDLINE
| ID: mdl-29446484
ABSTRACT
Despite numerous reports describing the relationship between head position and mandibular movement in human subjects, the direction and magnitude of force at the occlusal contacts have not been investigated in relation to head position. The objective was to investigate the effect of head position on the direction of occlusal force while subjects performed a tapping movement. Twenty-three healthy adult subjects were asked to sit on a chair with their back upright and to perform 15 tapping movements in five different head positions natural head position (control); forward; backward; and right and left rolled. The direction and magnitude of force were measured using a small triaxial force sensor. The Wilcoxon signed-rank test and Bonferroni test were used to compare head positions in each angle of the anteroposterior axis direction and the lateral axis direction with respect to the superior axis. The force element in the anteroposterior axis shifted to the forward direction in the head position pitched backward, compared with control, pitched forward and rolled left positions (P = .02, <.01 and <.01, respectively). The force direction in the lateral axis with the head position rolled to the right or left shifted to the left and right directions, respectively, compared with those in the other positions (P < .05). Results of this study suggest that the head should be maintained in a position in which a stable tapping movement can be performed in a relaxed position without anteroposterior and lateral loading.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Postura
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Articulación Temporomandibular
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Movimientos de la Cabeza
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Registro de la Relación Maxilomandibular
Límite:
Adult
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Female
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Humans
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Male
Idioma:
En
Revista:
J Oral Rehabil
Año:
2018
Tipo del documento:
Article
País de afiliación:
Japón