Effect of face form on maximal molar bite force with natural dentition
Effect of face form on maximal molar bite force with natural dentition
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DOI：
10.1016/j.archoralbio.2008.11.009
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发表时间：
2009-03-01
影响因子：
3
通讯作者：
Askari, Masood
中科院分区：
文献类型：
--
作者：
Bonakdarchian, Mortaza;Askari, Navid;Askari, Masood
目的：本研究的目的是确定成人正常牙合的平均最大咬合力，并评价面形对其的影响。设计：正常牙列的20名男性和20名女性学生，年龄在19 - 27岁之间。一个应变式力传感器的开发，以测量咬合力，并与已知的负载进行校准。在第一磨牙区域的牙列的每一侧上进行三次测量，并将平均值用于分析。面形定义为方形、锥形、方形锥形或椭圆形，并使用数码照片确定。采用双因素方差分析和邓肯检验分析性别和面型对咬合力的影响。在样本群体中为64.4（24.0）公斤（kg）。男性平均体重为73.6（23.8）kg，高于女性（53.0（19.6）kg）（P < 0.05）。方脸者的平均最大咬合力为93.7kg，显著高于其他脸型者（P < 0.05）。方脸形状可能有助于更高的咬合力值保持较高的机械优势的咀嚼肌。(c)2008爱思唯尔有限公司保留所有权利。
Objective: The purpose of this study was to determine mean maximum bite force in adults with normal occlusion and to evaluate effect of face form on it.Design: Twenty male and 20 female students with normal dentitions and between the ages of 19 and 27 participated in the study. A strain-gauge force transducer was developed to measure bite force and was calibrated with known loads. Three measurements were performed on each side of the dentition in the first molar region and mean values used for analysis. Face form was defined as square, tapering, square-tapering or oval and determined using digital photographs. Effect of gender and face form on bite force was statistically analysed using two-way ANOVA and Duncan tests.Results: Mean maximum bite force and standard deviation (S.D.) in the sample population was 64.4 (24.0) kilograms (kg). In men, the mean was 73.6 (23.8) which was statistically higher than in women (53.0 (19.6) kg) (P < 0.05). Mean maximum bite force in subjects with square face form was 93.7 kg, which was significantly higher than in subjects with other facial forms (P < 0.05).Conclusion: The results showed higher bite force in men and those with square face form. Square face form may contribute to higher bite force values by maintaining a higher mechanical advantage for muscles of mastication. (c) 2008 Elsevier Ltd. All rights reserved.