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对比预结晶或后结晶调整对二酸盐基陶疲劳行为的影响
Abdel Rahim Mohamad Abdel Salam Suleiman1, Luiza Freitas Brum Souza2, Vinícius Felipe Wandscher3
1MSciD Post-Graduate Program in Health and Life Sciences, Franciscan University, Santa Maria, Rio Grande do Sul State, Brazil.
概括
在结晶之前调整脱酸陶可以保持其疲劳强度,而结晶后的调整可以减少疲劳强度. 不同的陶材料也表现出不同的耐疲劳性.
科学领域:
- 牙科材料科学 牙科材料科学
- 生物材料工程 生物材料工程
- 陶工程 陶工程
背景情况:
- 基于二酸盐的陶广泛用于牙科修复.
- 了解加工后调整对陶性能的影响对于临床寿命至关重要.
研究的目的:
- 评估调整时间如何影响离陶的屈曲疲劳行为和表面特征.
- 根据调整时间,比较四种不同的离材料的疲劳性能和表面粗度.
主要方法:
- 测试了四种类型的脱酸盐陶.
- 标本被分为三个组:对照组 (没有调整),结晶前调整和结晶后调整.
- 循环疲劳双轴活塞三球曲测试进行,以确定疲劳曲强度 (FFS) 和疲劳失败周期 (CFF).
- 测量了表面粗度,并进行了断层和地形分析.
主要成果:
- 调整时间和材料类型都对FFS和CFF产生了重大影响.
- 结晶前调整并没有对疲劳行为产生负面影响,但增加了表面粗度.
- 结晶后调整显著降低了曲疲劳强度.
- 与T-CAD,IPS e.max CAD和Goozir二酸盐相比,Rosetta SM的性能较低.
结论:
- 应在结晶前对脱酸陶进行调整,以保持最佳的疲劳强度.
- 结晶后的调整对这些陶的屈曲疲劳性能不利.
- 材料的选择很重要,因为不同的脱酸陶表现出不同的疲劳行为.
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