Development of dental composition resin utilizing low shiriening and low viscous urethane monomears

利用低光泽和低粘度聚氨酯单体开发牙科组合物树脂

基本信息

批准号：
15592074
负责人：
OKAMURA Hiroyuki
金额：
$ 1.6万
依托单位：
The Nipponn 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：
2003
资助国家：
日本
起止时间：
2003 至 2006
项目状态：
已结题

项目摘要

To evaluate the application of the new low viscosity monomeric mixture, in which newly developed four-functional urethane-acrylate monomer was used as the base material, its mechanical and physical properties were investigated focusing on lowering the viscosity of monomer, and the following conclusions were obtained comparing with CR produced using bis-GMA monomeric mixture :The new monomeric mixtures showed relatively lower viscosity of 300-600 mPa-s in comparison with the bis-GMA-TEGDMA monomer system of 10,000 mPa-s.1) The mechanical strength of polymers obtained from new monomeric mixtures without fillers was similar to those of bis-GMA based polymers.2) The composites consisting of new monomeric mixtures possessed similar compressive strength to the bis-GMA based composites, although the viscosity of composite pastes even in high filler contents was markedly lower than that of bis-GMA based composites. The compressive strength of the composites increased with the filler content.3) The diametral tensile strength of the composite consisting of a new monomeric mixture was significantly smaller than those of other monomeric systems. Diametral tensile strength increased with the filler content.4) The bending strength of the composites increased with the filler content, although the composite consisted of a new monomeric system showed a different bending strength tendency.5) The setting shrinkage of the composites consisting of new monomeric mixtures were significantly smaller than those of the bis-GMA based composites. The setting shrinkage decreased with an increase of the filler contents.6) The setting shrinkage of the composites considerd of new monomer mixtures wear significantly smaller then that of the. bis-GMA based composite The setting shrinkage increased with the decrease of the filler contents.

为了评估新的低粘度单体混合物的应用，其中新开发的四官能尿电烷 - 丙烯酸酯单体被用作基础材料，研究了其机械和物理特性，重点是降低单体的粘度，并使用以下结论与使用BIS-GMA单组混合物相比，获得了以下结论：与BIS-GMA单位混合物进行比较： MPA-S与BIS-GMA-TEGDMA单体系统相比，为10,000 MPa-S.1）1）从没有填充的新的单体混合物中获得的聚合物的机械强度相似，与基于BIS-GMA的聚合物的聚合物相似。2）与BIS-GMA的聚合物相似。2）复合材料的复合材料，包括新单体混合物的组合，即使是基于BIS-GMA的组合，虽然较高的组合均具有相似的构图，虽然是bis-gma compos的组合，虽然是基于BIS-GMA的组合，但也是如此明显低于基于BIS-GMA的复合材料。复合材料的抗压强度随填充物含量而增加。3）由新单体混合物组成的复合材料的直径拉伸强度明显小于其他单体系统的直径。 4）复合材料的弯曲强度随填充含量的增加而增加，尽管复合材料由新的单体系统组成，显示出不同的弯曲强度趋势。5）5）由新单体混合物组成的复合材料的设置收缩量明显小于BIS-GMA Composes的组合。设置收缩随着填充物含量的增加而降低。6）复合材料的设置收缩考虑新单体混合物的磨损要比其磨损明显小。基于BIS-GMA的复合材料的设置收缩随着填充物含量的减少而增加。