| 潘熙云,康鸣竹,张丹琦,战德松.不同金刚砂车针对两种氧化锆切削行为的研究[J].口腔材料器械杂志,2024,33(2):88-94. |
| 不同金刚砂车针对两种氧化锆切削行为的研究 |
| Research on the cutting behavior of two kinds of zirconia with different diamond bur |
| 投稿时间：2023-12-27 修订日期：2024-03-27 |
| DOI：10.11752/j.kqcl.2024.02.04 |
| 中文关键词: 固定义齿修复 氧化锆 切削效率 |
| 英文关键词:Fixed Partial Denture Zirconium oxide Cutting Efficiency |
| 基金项目: |
|
| 摘要点击次数: 267 |
| 全文下载次数: 205 |
| 中文摘要: |
| 目的 研究临床常见两种不同类型氧化锆材料的耐磨性和被切削表现以及不同金刚砂车针对两种氧化锆的切削效率。方法 使用 Mani 和 RAICH 金刚砂车针在匀速恒力状态下切削多色多层氧化锆（MY 锆）与超透氧化锆（ST锆），并且用 Micro-CT系统对体积损失部分进行扫描重建，计算两种氧化锆的体积损失，评价其耐磨性。用两种氧化锆材料的体积损失与车针质量损失之比来评价两种车针的切削效率。使用 SEM 观察切削前后的两种氧化锆材料和两种金刚砂车针的表面微观形貌。结果 多色多层氧化锆体积损失较超透氧化锆大，且随切削深度增加而减少。多色多层锆体积损失为 MY 1st=20.07 mm3，MY 2nd=16.73 mm3，MY 3rd=13.5 mm3。超透氧化锆体积损失为 ST=12.64 mm3。耐磨性排序：ST＞MY 3rd＞MY 2nd ＞MY 1st。RAICH车针平均切削效率为109.21；Mani车针的平均切削效率为110.59，经t检验，差异无统计学意义（P>0.05）。结论 多层多色氧化锆越靠近浅层越容易切削，比超透氧化锆更容易切削；两种车针的切削效率基本相等。 |
| 英文摘要: |
| Objective This study aims to investigate the abrasion resistance and behavior of two types of zirconia materials commonly used in clinical applications after being cut, and the cutting efficiency with different diamond bur. Method Multicolor multilayer zirconia and ultra-transparent zirconia were cut using Mani and RAICH diamond bur under a constant speed with a fixed force, respectively. A scanning reconstruction was performed with a micro-CT system to calculate the volume loss of both zirconias and evaluated the abrasion resistance. The cutting efficiency of the two burs was assessed using the ratio of volume loss of the zirconia materials to the mass loss of the burs. SEM was used to observe the micro-morphology of the surfaces of the two zirconia materials and the two diamond burs before and after cutting. Results The volume loss of multi-color multilayer zirconia decreased with the cutting depth, which was more significant than that of ultra-transparent zirconia. The volume loss of multicolor multilayer zirconium was MY 1st=20.07 mm3, MY 2nd=16.73 mm3, and MY 3rd=13.5 mm3. The volume loss of ultra-transparent zirconia (ST) was 12.64 mm3. The order of abrasion resistance was ST > MY 3rd > MY 2nd > MY 1st. The mean cutting efficiency of RAICH burs was 109.21, and that of Mani turning needles was 110.59; no statistically significant difference was observed by the t-test (P>0.05). Conclusion The multilayer multicolor zirconia is easier to cut as it is closer to the shallow layer, whereas it is easier to cut than the ultra-permeable zirconia; the cutting efficiencies of the two types of diamond burs are approximately the same. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|