Dynamic viscoelasticity of soft liners and masticatory function.
Dynamic viscoelasticity of soft liners and masticatory function.
复制标题
软衬垫的动态粘弹性和咀嚼功能。
DOI：
10.1177/154405910208100208
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发表时间：
2002
影响因子：
7.6
通讯作者：
J. F. McCabe
中科院分区：
文献类型：
--
作者：
Hiroshi Murata;N. Taguchi;T. Hamada;M. Kawamura;J. F. McCabe
义齿软衬用于无牙患者以缓冲功能性力。我们假设，具有粘弹性的软衬垫的应用将导致最显着的改善咀嚼功能。通过动态粘弹性仪测定了6种材料的剪切储能模量（G '）、剪切损耗模量（G“）和损耗角正切（tan δ）。咀嚼功能的10名受试者进行了评估，通过测量最大咬合力和咀嚼时间和频率的2个食物样品，并通过使用视觉模拟量表。丙烯酸材料表现出粘弹性行为，而有机硅表现出弹性行为。与硬树脂相比，咀嚼功能的改善顺序为：丙烯酸永久材料>硅树脂>丙烯酸临时材料。结果表明，对于需要在义齿上提供软衬的患者，使用具有较高tan δ和G'的材料可提供最佳的咀嚼功能。
Soft denture liners are used for edentulous patients to cushion functional forces. We hypothesized that the application of soft liners having viscoelastic properties would lead to the most marked improvement in masticatory function. The shear storage modulus (G'), shear loss modulus (G''), and loss tangent (tan delta) were determined for 6 materials by means of a dynamic viscoelastometer. Masticatory function of ten subjects was evaluated by measurements of maximum bite forces and chewing times and frequencies for 2 food samples, and by the use of visual analogue scales. The acrylic materials exhibited viscoelastic behavior, while the silicones exhibited elastic behavior. The improvement in masticatory function compared with hard resin was found to be in the order: acrylic permanent materials > silicone > acrylic temporary materials. The results suggest that the use of materials with higher tan delta and G' provides the most optimum masticatory function for patients requiring the provision of soft liners on their dentures.