• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The Journal of Prosthetic Dentistry >Influence of oscillating and rotary cutting instruments with electric and turbine handpieces on tooth preparation surfaces
【24h】

Influence of oscillating and rotary cutting instruments with electric and turbine handpieces on tooth preparation surfaces

机译：带有电动和涡轮机头的摆动和旋转切割器械对牙齿准备表面的影响

获取原文
获取原文并翻译 | 示例
       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Statement of the problem Rotary and nonrotary cutting instruments are used to produce specific characteristics on the axial and marginal surfaces of teeth being prepared for fixed restorations. Oscillating instruments have been suggested for tooth preparation, but no comparative surface roughness data are available. Purpose To compare the surface roughness of simulated tooth preparations produced by oscillating instruments versus rotary cutting instruments with turbine and electric handpieces. Material and methods Different grit rotary cutting instruments were used to prepare Macor specimens (n=36) with 2 handpieces. The surface roughness obtained with rotary cutting instruments was compared with that produced by oscillating cutting instruments. The instruments used were as follows: coarse, then fine-grit rotary cutting instruments with a turbine (group CFT) or an electric handpiece (group CFE); coarse, then medium-grit rotary cutting instruments with a turbine (group CMT) or an electric handpiece (group CME); coarse-grit rotary cutting instruments with a turbine handpiece and oscillating instruments at a low-power (group CSL) or high-power setting (group CSH). A custom testing apparatus was used to test all instruments. The average roughness was measured for each specimen with a 3-dimensional optical surface profiler and compared with 1-way ANOVA and the Tukey honestly significant difference post hoc test for multiple comparisons (α=.05). Results Oscillating cutting instruments produced surface roughness values similar to those produced by similar grit rotary cutting instruments with a turbine handpiece. The electric handpiece produced smoother surfaces than the turbine regardless of rotary cutting instrument grit. Conclusion Rotary cutting instruments with electric handpieces produced the smoothest surface, whereas the same instruments used with a turbine and oscillating instruments achieved similar surface roughness.
机译：问题的说明旋转和非旋转切割工具用于在准备进行固定修复的牙齿的轴向和边缘表面上产生特定的特征。已经提出了用于牙齿准备的振荡仪器，但是没有可比较的表面粗糙度数据。目的比较由振动器械与带有涡轮机和电动手机的旋转切割器械生产的模拟牙齿制备物的表面粗糙度。材料和方法使用不同的砂砾旋转切割仪器制备带有2个手机的Macor标本（n = 36）。将用旋转切割仪器获得的表面粗糙度与通过振动切割仪器产生的表面粗糙度进行比较。所使用的仪器如下：粗磨，然后是细磨的带有涡轮机（CFT组）或电动手机（CFE组）的旋转式切割工具;带有涡轮机（CMT组）或电动手机（CME组）的粗粒，中粒度旋转切削刀具;低功率（CSL组）或大功率设定（CSH组）的带有砂轮机头的粗砂轮切割工具和振动工具。使用定制的测试仪器测试所有仪器。使用3维光学表面轮廓仪测量每个样品的平均粗糙度，并与1次方差分析和Tukey事后检验的诚实的显着差异进行比较，以进行多次比较（α= .05）。结果振动切削刀具产生的表面粗糙度值类似于具有涡轮机头的类似砂砾旋转切削刀具产生的表面粗糙度值。无论旋转切割器械的粒度如何，电动手机的表面均比涡轮机光滑。结论带有电动手机的旋转切割仪器可产生最光滑的表面，而与涡轮机和振动仪器一起使用的相同仪器可获得相似的表面粗糙度。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号