用于近端釉质间磨削的机械振荡带系统的摩擦和磨损行为:扫描电子显微镜的定量和定性评估。

Francesca Gazzani, Denise Bellisario, Laura Fazi, Alessia Balboni, Silvia Licoccia, Chiara Pavoni, Paola Cozza, Roberta Lione
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引用次数: 0

摘要

目的评估摆动条的磨损和摩擦特性,以验证标准化的近端釉质间磨削(IPR)序列对保持其效率和使用寿命的重要性:通过摩擦学测试(线性往复摩擦仪,C.S.M. Instruments, Peseaux, Switzerland)对 15 个完整的摆动式 IPR 序列进行了测试。15 个 0.2 毫米的单个金属带经过 240 分钟的长时间连续循环。通过接触探针表面轮廓仪 (TalySurf CLI 2000; Taylor Hobson, Leicester, UK) 和 TayMap 软件对带材表面粗糙度和波纹度进行测量。统计分析采用独立样本 t 检验。显著性水平为 P < .05。使用 FEI Quanta 200 (Hillsboro, Ore) 在 30.00 kV 的高真空条件下对带材表面进行扫描电子显微镜分析:结果:树脂带材的表面粗糙度(Ra、Rt、RDq)明显降低,波状参数(Wa、Wt)明显增加。使用金属带后,Rt 和 RDq 值明显下降。只有 0.2 毫米的金属带的 Wa 值(+ 2.84 微米)和 Wt 值(+ 0.1 微米)明显增加。在对金属带进行单个测试而不是整个序列测试时,可以观察到更高的摩擦值。当 0.2 毫米金属带的测试时间长达 240 分钟时,Ra 和 Rt 值较低:结论:采用标准化的摆动序列可提高金属带的磨损性能,对其磨蚀力和使用寿命有显著影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Friction and wear behavior of a mechanical oscillating strip system used for interproximal enamel reduction: a quantitative and qualitative scanning electronic microscope evaluation.

Objectives: To evaluate wear and friction properties of oscillating strips in order to validate the importance of a standardized interproximal enamel reduction (IPR) sequence to preserve their efficiency and lifetime.

Materials and methods: Fifteen complete oscillating IPR sequences were tested by means of tribological tests (Linear Reciprocating Tribometer, C.S.M. Instruments, Peseaux, Switzerland). Fifteen single 0.2-mm metallic strips underwent a long continuous cycle of 240 minutes. Strip surface roughness and waviness measurements were assessed by means of a contact probe surface profiler (TalySurf CLI 2000; Taylor Hobson, Leicester, UK) and TayMap software. Statistical analysis was performed with independent-samples t-test. Significance was at the P < .05 level. Scanning electronic microscopy analysis of strip surfaces was conducted with an FEI Quanta 200 (Hillsboro, Ore) in high vacuum at 30.00 kV.

Results: Resin strips revealed a significant reduction in surface roughness (Ra, Rt, RDq) and a significant increase in waviness parameters (Wa, Wt). Rt and RDq values significantly decreased upon use of the metallic strips. Significantly higher values of Wa (+ 2.84 µm) and Wt (+0.1 µm) were observed only for the 0.2-mm metallic strips. Higher friction values were observed when the metallic strips were tested singularly rather than within the entire sequence. Lower Ra and Rt values were revealed when 0.2-mm metallic strips were tested up to 240 minutes.

Conclusions: The application of a standardized oscillating sequence allows for more efficient wear performance of the strips with a significant impact on their abrasive power and lifetime.

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