In clinical dental practice, high-speed dental burs serve as core instruments for tooth preparation and caries removal. The shank neck strength of a bur is a key indicator for evaluating product reliability and directly determines clinical safety. If a bur with insufficient neck strength fractures during use, it will not only interrupt treatment but also pose instrument-related risks — a primary concern for dentists when selecting dental burs.
To visually verify the mechanical performance of our products, Hanrui Medical Laboratory conducts comparative static bending tests on bur necks. The tests simulate complex stress conditions encountered in clinical settings and adopt objective quantitative data to validate the advantages of our structural design and material processing technology.
Based on principles of material and machine mechanics, professional mechanical testing equipment is used to perform synchronous static bending tests on Hanrui burs and competitor samples. The instrument captures real-time deformation, stress distribution and critical fracture values, and fully records all key parameters.
最大力(N) Max Force | 最大力点变形(N) Deflection at Max Force | 强度（MPa） Strength | |
瀚瑞车针 Hanrui Dental Bur | 136.34 | 0.88 | 10.86 |
其它品牌 Other Brand | 73.7 | 0.68 | 5.87 |
*以上数据，来源于瀚瑞实验室
Data sourced from Hanrui Laboratory
The test results clearly demonstrate that Hanrui dental burs outperform comparative samples across all mechanical indicators. Our burs withstand higher external loads and feature superior deformation resistance, greatly reducing the risk of neck fracture in clinical applications. Such outstanding neck strength is no random test outcome; it results from the synergistic optimization of material selection, grinding technology and blade-shank structural design.
Every set of test data forms a critical foundation for Hanrui’s product iteration. Through ongoing mechanical testing in the laboratory, we refine the screening criteria for tungsten carbide substrates, adjust grinding parameters and optimize the transition structure at the bur neck. While maintaining cutting sharpness, we enhance overall structural toughness to strike an optimal balance between cutting efficiency and structural strength.
A tiny dental bur embodies profound expertise in materials and manufacturing craftsmanship. From a clinical perspective, Hanrui continuously refines its products. Supported by experimental data and robust mechanical properties, we supply domestic medical-grade tungsten carbide dental burs with enhanced stability and reliability for dental practitioners.
Moving forward, Hanrui Medical will keep improving the product testing system, further explore material and processing technologies, and continuously upgrade the comprehensive performance of dental burs. With rigorous experiments and solid data, we develop domestically manufactured dental burs that stand the test of clinical practice.
