Z350复合树脂不同厚度组充填螺丝固位式种植修复体入路孔的实验研究  

Study on Filling Depth of Z350 Composite Resin in the Access Hole of Screw Retained Implant Denture

作　　者：秦云 钱梅 朱轶萍 

机构地区：[1]江苏张家港市中医医院口腔科江苏张家港215600

出　　处：《口腔医学研究》2015年第11期1081-1084,共4页Journal of Oral Science Research

摘　　要：目的：采用Z350复合树脂材料推测充填厚度对螺丝固位型种植义齿的入路孔周围瓷层的影响。方法：实验样品随机均分为3组;对颌用BEGO合金制作的金属联冠。将3组样品的入路孔用棉球填塞后分别留2.0mm、3.5mm和5mm的深度,按照预留深度充填Z350复合树脂后调、抛光,10个样品分别在0~100N,1Hz,20000次受到沿种植体长轴方向的力,加载完毕后在场发射电子显微镜下观察,计数在钉道口周围0.5 mm内的裂纹数量,将3组数据进行统计学分析。结果：对测得的实验数据进行统计学分析：Z350复合树脂3.5mm充填组和5.0mm充填组之间不存在统计学差异,2.0mm充填组与其他两组有统计学差异。结论：3.5mm厚度对表面瓷和树脂的受力后性能的改善明显,继续增加厚度对表面瓷和树脂的受力后性能的改善没有统计学意义。Objective：To speculate the influence of filling depth of Z350 composite resin on the porcelain surround the access hole of screw retained implant denture.Methods：The samples were randomly divided into three groups according to the depth of the access hole of the screw retained implant dentures,i.e.2.0mm,3.5mm and 5mm respectively after packing the cotton ball.The access holes were restored by Z350 composite resin.After occlusal adjustment and polishing,10 samples were loaded with 0~100Nand 1Hz force along the long axis of the implant for20000 times.The cracks in the area around 0.5mm from the access holes were observed with field emission electron microscope.The number of the cracks in three groups was counted.Results：There was no significant difference between 3.5mm group and 5.0mm group.However,there was significant difference between 2.0mm group and 3.5mm group as well as 5.0mm group.Conclusion：The depth of 3.5mm has obvious effect on the strength of porcelain and resin.Further increase of resin depth to 5mm is not meaningful.

关 键 词：螺丝固位 入路孔 充填 隐裂 

分 类 号：R783.6[医药卫生—口腔医学]