A study of mandible chewing movement in patients with developmental lateral jaw deformity / 中华口腔医学杂志
Chinese Journal of Stomatology
;
(12): 74-77, 2005.
Artículo
en Chino
| WPRIM
| ID: wpr-324103
ABSTRACT
<p><b>OBJECTIVE</b>The purpose of the present study was to investigate effects of developmental lateral jaw deformity (DLJD) on masticatory movement.</p><p><b>METHODS</b>Three coordinates of mandibular movement signals were recorded in 35 young healthy adults with normal occlusion and 28 patients with DLJD by means of a Sirognathography System during gum chewing movement. Paired and unpaired t-tests were used to compare significant difference of intra-group and inter-groups in displacement and speed. P < 0.05 was chosen as significance level.</p><p><b>RESULTS</b>(1) The rhythm and directional sequence of chewing trajectory in both frontal and sagittal planes were normal in control group, while anomalies of rhythm and distribution (n = 9) and reversed sequencing (n = 7) were found in DLJD group. (2) The maximum magnitude of jaw retrusion and average speed were significant higher in DLJD group than those in control group (P < 0.01). The spatial displacement and average speed in horizontal plane and in chewing phase were also higher in DLJD group compared with control group (P < 0.05).</p><p><b>CONCLUSIONS</b>DLJD patients showed anomalies in chewing pattern as well as chewing speed and displacement in horizontal plane.</p>
Texto completo:
Disponible
Índice:
WPRIM (Pacífico Occidental)
Asunto principal:
Fisiología
/
Estudios de Casos y Controles
/
Dentición Permanente
/
Anomalías Maxilomandibulares
/
Registro de la Relación Maxilomandibular
/
Mandíbula
/
Masticación
Tipo de estudio:
Estudio observacional
Límite:
Adulto
/
Femenino
/
Humanos
/
Masculino
Idioma:
Chino
Revista:
Chinese Journal of Stomatology
Año:
2005
Tipo del documento:
Artículo
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