Takanashi Y, Kishi M
Department of Removable Partial Prosthodontics, Tokyo Dental College, Chiba, Japan.
Bull Tokyo Dent Coll. 1997 Feb;38(1):51-60.
Masticatory function was investigated in 7 subjects (5 women and 2 men) with unilateral OIB in their lower molar region. Masticatory movement and myoelectric discharge were analyzed. To examine occlusal contact, the closely occlusal contact area and occluding forces were investigated. The results from the OIB side were compared with the ones from the opposite side. In all subjects, there were no significant differences in the parameters of mandibular movement between chewing the test foods on the OIB side and chewing them on the opposite side. In 6 out of 7 subjects, the closely occlusal area of the interocclusal space differed by less than 1.0 mm between the OIB side and the opposite side in the molar region, and the occluding forces between them were similar. In 6 out of 7 subjects, the masticatory sensations were also similar between the two sides. There were no significant differences between the OIB side and the opposite side in the parameters of mandibular movement, the condition of occlusal contact and the sensation of mastication in patients who were treated with unilateral OIB in the lower molar region. The data seem to suggest that there is little difference between the masticatory ability of OIB and that of natural dentition.
对7名在下颌磨牙区患有单侧牙列缺损（OIB）的受试者（5名女性和2名男性）的咀嚼功能进行了研究。分析了咀嚼运动和肌电放电情况。为检查咬合接触，对紧密咬合接触面积和咬合力进行了研究。将牙列缺损侧的结果与对侧的结果进行了比较。在所有受试者中，在牙列缺损侧咀嚼测试食物与在对侧咀嚼测试食物时，下颌运动参数没有显著差异。在7名受试者中的6名中，磨牙区牙列缺损侧与对侧之间的牙合间隙紧密咬合面积相差小于1.0毫米，且两者之间的咬合力相似。在7名受试者中的6名中，两侧的咀嚼感觉也相似。在下颌磨牙区接受单侧牙列缺损治疗的患者中，牙列缺损侧与对侧在下颌运动参数、咬合接触情况和咀嚼感觉方面没有显著差异。数据似乎表明，牙列缺损的咀嚼能力与天然牙列的咀嚼能力之间几乎没有差异。
