Views: 23 Author: Site Editor Publish Time: 2026-06-09 Origin: Site
With the continuous advancement of modern medical technology, medical devices, especially implant components for human body, have extremely high requirements on raw materials in terms of biosafety, mechanical properties, corrosion resistance and machining accuracy. Thanks to its comprehensive performance advantages, titanium alloy has become the preferred material for high-end implantable medical devices. Among all grades, Grade 5 Titanium Alloy (Ti-6Al-4V) is widely used in dentistry, orthopedics and minimally invasive instruments. This article introduces the core advantages, material selection principles and machining requirements of medical-grade titanium alloy, and shares a practical case of customized Grade 5 titanium self-tapping screws for dental use completed by our company.
Medical-grade titanium alloy features stable chemical properties, non-toxicity and low sensitization. It will not cause rejection reaction with human soft tissues, bones and body fluids, and can be implanted in the human body for a long time. It effectively reduces the risks of postoperative inflammation and allergy, and fully complies with safety standards for implant materials.
Human body fluids and saliva contain various acidic and alkaline substances. Titanium alloy resists oxidation, rust and corrosion in such complex environments. Its dimension and performance remain stable during long-term service, ensuring reliable operation of medical devices.
Titanium alloy combines high strength, good toughness and excellent fatigue resistance. It can withstand long-term repeated force, extrusion and torsion without deformation or fracture, making it ideal for load-bearing medical fasteners and structural parts.
Compared with traditional metals such as stainless steel and carbon steel, titanium alloy has a lower density. Implant parts made of titanium alloy are lightweight, which reduces foreign body sensation for patients and improves comfort.
Titanium alloy is non-magnetic and will not interfere with medical imaging equipment and precision diagnostic instruments, so it is applicable to a wide range of clinical scenarios.
Medical titanium materials are mainly divided into commercially pure titanium and titanium alloys.
Commercially pure titanium (Grade 1 / Grade 2) is relatively soft with limited strength, which is mostly used for non-load-bearing thin parts and protective housings.
Grade 5 Titanium Alloy (Ti-6Al-4V) is the most widely used grade in the medical industry. Its strength is greatly improved after alloy optimization with excellent overall mechanical properties. It is specially designed for load-bearing, locking and anti-torsion implant fasteners, and has become the standard material for dental and orthopedic screws.
For miniature implant fasteners, Grade 5 titanium alloy has obvious advantages over stainless steel and pure titanium. Compared with stainless steel, it is lighter, more biocompatible and more corrosion-resistant. Compared with pure titanium, it has higher strength, hardness and deformation resistance to meet the strict requirements of self-tapping locking and long-term stress bearing. For dental self-tapping screws and other stressed implant parts, Grade 5 titanium alloy is the best choice in terms of overall performance and safety.
Titanium alloy has special material properties and is more difficult to machine than ordinary steel. Combined with the standards of medical devices, multiple details must be strictly controlled during production.
First of all, titanium alloy has low thermal conductivity, so heat tends to accumulate during cutting. Professional cutting tools and reasonable cutting parameters are adopted to avoid thermal deformation and ensure dimensional accuracy.
Secondly, most medical accessories are micro precision parts with strict standards for dimensional tolerance, thread shape and surface finish. All threads shall be well formed with smooth and burr-free surface. Special-shaped structures and angled grooves must be machined with high precision to guarantee assembly and service performance.
Finally, finished products need to go through medical-grade surface treatment including precision polishing and passivation to remove surface impurities and ensure material cleanliness for human implantation. We only adopt regular medical-grade raw materials with traceability, and complete material inspection reports can be provided for each batch.
The product in this project is Grade 5 titanium dental self-tapping screw, which is applied to dental orthodontics and oral implant restoration as an implantable fixing fastener for long-term intraoral use. The client required qualified material, precise dimension, good self-tapping performance and anti-rotation structure to prevent loosening during long-term service, meeting all clinical demands.
All dimensions are measured in millimeters (mm):
Maximum outer diameter: 4.00 mm
Key shank diameters: 2.00 mm, 1.50 mm, 1.90 mm, 1.40 mm
Total length: 10.00 mm
Thread section length: 2.50 mm
Thread pitch: 1.45 mm
Thread depth: 0.50 mm
Anti-rotation depth: 0.75 mm
Groove depth: 0.2 mm
Structural angle: 84°
Screw cavity length: 6.00 mm
The product consists of three core structures: smooth shank, standard self-tapping thread and anti-rotation groove. It is fully functional and compatible with mainstream dental equipment systems.
According to the service conditions, Grade 5 titanium alloy was selected for this product. Its high strength can withstand daily occlusal force in oral cavity to prevent thread slipping and fracture. Excellent corrosion resistance resists long-term erosion by saliva. Reliable biocompatibility ensures implantation safety, fully meeting all requirements of dental implant parts.
The product is fully processed by high-precision CNC machining. The tiny structures, precision threads, 84° special angle and anti-rotation grooves are integrally formed. Dimensional tolerance is strictly controlled to comply with drawing standards.
The threads are specially optimized with regular tooth profile and strong gripping force for smooth self-tapping insertion. After machining, all products are treated with medical-grade precision polishing and passivation to achieve clean and smooth surface without tool marks or burrs.
Full dimensional sampling inspection and material re-inspection are implemented for every batch. Strict quality control is carried out from raw materials to finished products.
High dimensional accuracy for perfect matching with various supporting dental devices and smooth assembly;
Stable self-tapping thread performance simplifies surgical operation and improves diagnosis and treatment efficiency;
Built-in anti-rotation structure effectively prevents loosening during long-term use;
Safe and corrosion-resistant material with good fatigue resistance, suitable for long-term intraoral implantation.
We specialize in customized processing of medical-grade titanium alloy precision parts. We produce various Grade 5 titanium dental screws, orthopedic fasteners and miniature implant components. We accept customized drawings and non-standard product development, and support small-batch prototyping and mass production.
We provide one-stop services including raw material procurement, precision machining, surface treatment and quality inspection. Material certificates and dimensional inspection documents can be provided on request. We deliver stable and high-quality component solutions for medical device brands and dental equipment suppliers at home and abroad.
With the rapid development of medical industry, titanium alloy has become an indispensable core material for implantable medical devices. As a high-performance grade, Grade 5 titanium alloy dominates the market of medical fasteners. Medical accessories are closely related to human health. Only proper material selection, precision machining and strict quality control can produce safe and reliable products. We will continue to focus on precision machining of medical titanium alloy, and boost the development of medical industry with professional technology and high-quality services.
We provide fast quotations, detailed DFM feedback, and precision machining services for both prototypes and production.
Please send us your detail inquiry:
- 2D or 3D drawing or Sample
- quantity
- surface finish requirement
Anna Zhong
JV Precision Manufacturing Co.,Ltd.
DongGuan JIECHEN Precision Hardware Manufacturing Co.,Ltd.
TEL: +86-153-3836-0970 (whatsapp, wechat)
E-mail: anna.zhong@jvprecisionmfg.com
Website: www.jvprecisionmfg.com
