Association between occlusal curvature and food comminution and mixing in human young adults with permanent dentitions
Association between occlusal curvature and food comminution and mixing in human young adults with permanent dentitions
复制标题
DOI：
10.1016/j.archoralbio.2012.06.006
复制
发表时间：
2013-04-01
影响因子：
3
通讯作者：
Igarashi, Y.
中科院分区：
文献类型：
--
作者：
Fueki, K.;Yoshida, E.;Igarashi, Y.
目的：研究成人牙列的Spee曲线、Wilson曲线、Monsons球面等咬合曲率，为修复修复和正畸治疗提供临床指导。然而，咬合曲率和咀嚼功能之间的关联尚不清楚。本研究的目的是调查具有恒牙列的年轻人的咬合曲率与食物粉碎和食物混合能力之间的关联。设计：50 名具有完整牙列的年轻人（平均年龄，25.0 岁）参与了这项研究。根据 Broadrick 旗标法，通过对下颌弓进行三维分析来确定咬合曲率。使用花生作为测试食物的咀嚼性能测试来评估食物粉碎能力，并以中值粒度进行评分。使用双色蜡块进行混合能力测试来评估食物混合能力，并将其评分为混合能力指数。结果：线性回归分析确定，在控制最大咬合力后，咬合曲率的球体半径是中值颗粒尺寸和混合能力指数的显着预测因子（P < 0.001）。这些结果表明，下颌弓曲率较平坦（球体较大）的受试者表现出更好的食物粉碎和混合能力。与中值颗粒大小和混合能力指数相关的咬合曲率决定系数（R-2）与最大咬合力相当。结论：咬合曲率似乎与恒牙列青年人的食物粉碎和混合能力相关。 (C) 2012 Elsevier Ltd. 保留所有权利。
Objective: Occlusal curvatures in human adult dentition such as the curve of Spee, curve of Wilson and Monsons's sphere provide clinical guidance for prosthetic rehabilitation and orthodontic treatment. However, association between occlusal curvature and masticatory function is not known. The aim of this study was to investigate the association between occlusal curvature and food comminuting and food mixing ability in human young adults with permanent dentitions.Design: Fifty young adults with complete dentitions (mean age, 25.0 years) participated in the study. Occlusal curvature was determined by a three-dimensional analysis of the mandibular arch according to the Broadrick flag method. Food comminuting ability was assessed using a masticatory performance test with peanuts as test food and it was scored as median particle size. Food mixing ability was assessed using a mixing ability test with a two-coloured wax cube and it was scored as mixing ability index.Results: A linear regression analysis identified the sphere radius of occlusal curvature as significant predictor for both median particle size and mixing ability index after controlling for maximum bite force (P < 0.001). These results indicated that subjects with a flatter curvature (larger sphere) in the mandibular arch showed better food comminuting and mixing ability. Coefficient of determination (R-2) of occlusal curvature related to median particle size and mixing ability index was comparable to that of maximum bite force.Conclusion: Occlusal curvature seems to be associated with food comminuting and mixing ability in human young adults with permanent dentitions. (C) 2012 Elsevier Ltd. All rights reserved.