Investigation of improving masticatory ability of denture wearer using Soft Lining Material

使用软衬材料提高义齿佩戴者咀嚼能力的研究

• 批准号: 14571838
• 负责人: MORIZAWA Masayuki
• 金额: $ 2.24万
• 依托单位: Tokyo Medical and Dental University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2004
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14571838/
• 关键词: Denture; Masticatory Ability; Soft Lining Material; Viscoelastic properties; Water sorption; Solubility; 吸収性; 溶解性

The cyclic loadings during mastication supposedly accelerate degradation of soft lining materials. The purpose of this study was to investigate the effects of the cyclic loadings on viscoelastic properties of soft lining materials. Two plasticized acrylics, two silicones and one isoprene-based monomer contained elastomer were selected. Cylindrical-shaped specimens, 10 mm X 10 mm Φ, were prepared. Twenty specimens were subjected to cyclic loading in a water bath at 37 ℃ ; other twenty specimens were without cyclic loading. The viscoelastic properties were measured by a creep-meter. The cyclic loading significantly decreased heights of two materials, the instantaneous elastic displacements of one acrylic liner and the viscous flows of three materials. The cyclic loading affected mainly delayed deformations. Therefore, the cyclic loading was useful evaluating method for durability of soft lining material.

咀嚼过程中的循环载荷可能会加速软衬材料的降解。本研究的目的是研究循环载荷对软衬材料粘弹性的影响。选择了两种增塑的丙烯酸酯、两种有机硅和一种含有弹性体的异戊二烯单体。制备了10 mm×10 mmΦ的圆柱形试件。20个试件在37℃的水浴中进行循环加载，另外20个试件没有循环加载。用蠕变仪测量了材料的粘弹性能。循环载荷显著降低了两种材料的高度、一种亚克力衬垫的瞬时弹性位移和三种材料的粘性流动。循环加载主要影响延迟变形。因此，循环荷载是评价软衬砌材料耐久性的有效方法。

项目成果

Effects of cyclic loading on viscoelastic properties of soft lining materials

循环荷载对软衬材料粘弹性能的影响

• 发表时间: 2003
• 期刊: 22
• 作者: Muraoka G;Takahashi H;Hayakawa I
• 通讯作者: Hayakawa I