ProGlider、Edge Glide Path和R-Pilot根管治疗器械循环疲劳强度的多方法评估
Multimethod Assessment of the Cyclic Fatigue Strength of ProGlider, Edge Glide Path and R-Pilot Endodontic Instruments.
作者信息
Martins Jorge N R, Marques Duarte, Vasconcelos Isabel, Arantes-Oliveira Sofia, Caramês João, Braz Fernandes Francisco Manuel
机构信息
Faculdade de Medicina Dentária, Universidade de Lisboa, 1600-277 Lisboa, Portugal.
Centro de Estudo de Medicina Dentária Baseada na Evidência (CEMDBE), 1600-277 Lisboa, Portugal.
出版信息
Dent J (Basel). 2022 Feb 17;10(2):30. doi: 10.3390/dj10020030.
BACKGROUND
The aim of this study was to comprehensively evaluate the cyclic fatigue strength of ProGlider, Edge Glide Path, and R-Pilot instruments.
METHODS
Sixty-three instruments were submitted to a multimethod evaluation. Their design was analyzed by stereomicroscopy and scanning electron microscopy, including the number of blades, helical angle means, cross-sectional design, surface finishing, and symmetry. Energy-dispersive X-ray spectroscopy was used determine the nickel/titanium elements ratio, and differential scanning calorimetry determined the instruments' phase transformation temperatures. The cyclic fatigue tests were conducted in an artificial canal with a 6 mm radius and 86 degrees of curvature. The Mood's median test and one-way ANOVA were used to determine differences, with the significance level set at 0.05.
RESULTS
The ProGlider presented the highest number of blades ( = 21), while R-Pilot had the highest helical angles (26.4°). Differences were noted in the instruments' cross-sections and surface finishing. The ProGlider and R-Pilot showed some similarities regarding the phase transformation temperatures but differed from the Edge Glide Path. All alloys showed an almost equiatomic nickel/titanium ratio. The R-Pilot instruments showed a significantly higher ( < 0.05) time to fracture than both the other files.
CONCLUSION
Reciprocating R-Pilot instruments showed a higher cyclic fatigue time to fracture than the ProGlider and Edge Glide Path rotary files.
背景
本研究的目的是全面评估ProGlider、Edge Glide Path和R-Pilot器械的循环疲劳强度。
方法
对63件器械进行多方法评估。通过体视显微镜和扫描电子显微镜分析其设计，包括刀片数量、螺旋角均值、横截面设计、表面光洁度和对称性。使用能量色散X射线光谱法测定镍/钛元素比例，差示扫描量热法测定器械的相变温度。在半径为6 mm、曲率为86度的人工根管中进行循环疲劳试验。采用Mood中位数检验和单因素方差分析确定差异，显著性水平设定为0.05。
结果
ProGlider的刀片数量最多(=21)，而R-Pilot的螺旋角最大(26.4°)。器械的横截面和表面光洁度存在差异。ProGlider和R-Pilot在相变温度方面表现出一些相似性，但与Edge Glide Path不同。所有合金的镍/钛比例几乎为等原子比。R-Pilot器械的断裂时间显著高于其他两种锉( < 0.05)。
结论
往复式R-Pilot器械的循环疲劳断裂时间高于ProGlider和Edge Glide Path旋转锉。
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