Manifestation of preferred chewing side for hard food on TMJ disc displacement side.

摘要: The purpose of this study was to reveal the relationship between chewing-side preference and anterior disc displacement (ADD) TMJ. Thirty-two healthy subjects with ages ranging from 26 34 years were selected volunteer students at Okayama University Dental School. Subjects asked chew freely two kinds test foods, beef jerky (hard food) chiffon cake (soft food), thus expecting different amounts mechanical loading on One, 4, 7 s after starting mastication, open their mouth momentarily have a digital image taken. bolus placement area measured by processing images, calculated as number pixel area. Area asymmetry index used for determination preferred chewing side (PCS). Oblique sagittal MRI scanning in closed position taken evaluate articular position. In asymptomatic ADD, significant predominance PCS ipsilateral ADD observed during mastication hard food. On contrary, no correlation found unilateral soft From results study, it is suggested that associating factor Therefore, would be necessary break down concept into least categories, one food food, considering