不同条件的表面喷砂对牙科氧化锆材料表面丧失的影响

›› 2017, Vol. 37 ›› Issue (1): 29-33.

不同条件的表面喷砂对牙科氧化锆材料表面丧失的影响

李新¹,苏乃川²,廖运茂²,刘文佳²,王航²

1. 四川省绵阳市中心医院
2. 四川大学华西口腔医学院

收稿日期:2015-09-23 修回日期:2015-12-07 出版日期:2017-01-28 发布日期:2017-01-17
通讯作者: 苏乃川 E-mail:812913072@qq.com

Effect of different conditions of sandblasting on surface loss of dental zirconia

Received:2015-09-23 Revised:2015-12-07 Online:2017-01-28 Published:2017-01-17
Contact: Nai-Chuan SU E-mail:812913072@qq.com

摘要/Abstract

摘要： 目的　探究不同喷砂压强、喷砂时间以及喷砂氧化铝颗粒大小对牙科氧化锆表面丧失量的影响。方法　250个氧化锆样本根据不同的喷砂压强（0.1 MPa、0.2 MPa、0.4 MPa、0.6 MPa）、喷砂时间（7 s、14 s、21 s）及喷砂氧化铝颗粒大小（50 μm、110 μm）随机分成25个组，对照组氧化锆不接受表面喷砂。喷砂后对每一组的体积平均丧失量、高度平均丧失量及粗糙度进行计算并比较。结果　随着喷砂时间及喷砂压强的增加，以及喷砂颗粒大小的减小，氧化锆表面丧失量增加（P均＜0.05）。随着喷砂时间、喷砂压强以及喷砂颗粒尺寸的增加，氧化锆表面粗糙度也增加（P均＜0.05）。结论　考虑到氧化锆表面丧失对适合性的影响以及粗糙度对粘结性能的影响，采用21 s、0.2 MPa及110 μm的喷砂条件对氧化锆进行喷砂最为适合。

关键词: 氧化锆, 喷砂, 表面丧失, 粗糙度

Abstract: Objective To evaluate the effect of different sandblasting conditions including sandblasting time, sandblasting pressure and sandblasting alumina powder size on surface loss of dental zirconia. Methods 250 zirconia bars were randomly divided into 25 groups according to different sandblasting pressures (0.1 MPa, 0.2 MPa, 0.4 MPa, 0.6 MPa), sandblasting times (7 s, 14 s and 21 s) and alumina powder sizes (50 μm and 110 μm). The control group did not receive sandblasting. The volume loss, height loss and roughness on zirconia surface after sandblasting were measured and compared for each group. Results The volume loss and height loss were increased with higher sandblasting pressure and longer sandblasting time, but they decreased with larger powder size (all P＜0.05). The surface roughness were increased with higher sandblasting pressure, longer sandblasting time and larger powder size (all P＜0.05). Conclusion Considering the clinical adaptation and surface roughness after sandblasting, sandblasting with alumina particles at 0.2 MPa, 21 s and the powder size of 110 μm is recommended for dental application.

Key words: zirconia, sandblasting, surface loss, roughness

中图分类号:

R783.1

李新苏乃川廖运茂刘文佳王航. 不同条件的表面喷砂对牙科氧化锆材料表面丧失的影响[J]. , 2017, 37(1): 29-33.

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