镍钛旋转根管器械循环疲劳抗性测试验证研究数据集（数据表1）

数据集获取（Figshare）

• 源站标题：Data_Sheet_1_Testing Cyclic Fatigue Resistance of Nickel Titanium Rotary Endodontic Instruments: A Validation Study for a Minimum Quality Criterion in a Standardized Environment.PDF
• DOI：10.3389/fdmed.2021.744809.s001
• 发布日期：2021-09-27
• 文件数：1 个
• 文件总体积：1.23 MB
• 源站页面：https://frontiersin.figshare.com/articles/dataset/Data_Sheet_1_Testing_Cyclic_Fatigue_Resistance_of_Nickel_Titanium_Rotary_Endodontic_Instruments_A_Validation_Study_for_a_Minimum_Quality_Criterion_in_a_Standardized_Environment_PDF/16684336

命令行下载

curl -L -o "Data_Sheet_1_Testing Cyclic Fatigue Resistance of Nickel Titanium Rotary Endodontic Instruments: A Validation Study for a Minimum Quality Criterion in.PDF" "https://ndownloader.figshare.com/files/30892414"

文件清单

• Data_Sheet_1_Testing Cyclic Fatigue Resistance of Nickel Titanium Rotary Endodontic Instruments: A Validation Study for a Minimum Quality Criterion in.PDF（1.23 MB）

文件总体积 1.23 MB（源站 API 实测）。

数据加载示例（图像类）

from PIL import Image
import glob, os

files = (glob.glob(os.path.join(path, "**", "*.png"), recursive=True)
       + glob.glob(os.path.join(path, "**", "*.jpg"), recursive=True)
       + glob.glob(os.path.join(path, "**", "*.tif"), recursive=True))
print("图像文件数:", len(files))
img = Image.open(files[0]); print("尺寸/模式:", img.size, img.mode)

# torchvision Dataset 方式:
# from torchvision import datasets
# ds = datasets.ImageFolder(path)  # 要求 子目录=类别

目录组织与标注格式以源站说明和下载后实际文件为准。

数据说明

Introduction: Cyclic fatigue resistance of rotary endodontic instruments has been extensively studied in the last two decades, yet with no standardization. While new low-cost instruments are now manufactured, a standard is lacking to guarantee a minimum quality. This study aimed to validate a new model for CF testing through a fixture proposed for ISO Specification 3630-1 and to establish a minimum quality standard based on testing conditions and material characteristics.
Materials and methods: Size 25/0.06 instruments of ProFile Vortex (PF) and Vortex Blue (VB) were run until failure in curved metallic fixtures (5 or 7.5 mm radius) built according to a proposal for an additional test for the ISO 3630-1 standard. High resolution videos were recorded, number of cycles to failure (NCF) registered and apical fragments measured with a digital caliper. Surface strain was determined from test dimensions and fragment lengths. Mean life, β and η parameters were calculated with Weibull analysis. NCF data were compared using student’'s t-tests and referenced to a minimum required cycles at fracture (Cmin) based on austenite finish temperatures, testing temperature and deformation.
Results: VB instruments were statistically more resistant than PF in both 7.5 mm radius curve (p = 0.001) and 5 mm radius curve (p = 0.002) simulated canals. Weibull probability plots showed higher mean life for VB than PV. NCF for both instruments were higher than Cmin.
Conclusions: The NCF results in this study support the findings of previous studies where VB and PF were compared. The novel test design appears a suitable addition to ISO 3630-1.

许可

CC BY 4.0

引用

学术使用请引用 DOI 10.3389/fdmed.2021.744809.s001（source: https://frontiersin.figshare.com/articles/dataset/Data_Sheet_1_Testing_Cyclic_Fatigue_Resistance_of_Nickel_Titanium_Rotary_Endodontic_Instruments_A_Validation_Study_for_a_Minimum_Quality_Criterion_in_a_Standardized_Environment_PDF/16684336）。