Description
TC4 Titanium rods is normally used in the processsing dental bases, abutment,and bridge during dental implant procedures. The key size, parameters, and some others of performances and propertities forASTM F136/67 TC4 Ti rods for dental bases Abutment &Bridge are as below description.
1. Size & specifications:
The size of dental titanium rods (ASTM F136/67 TC4 Ti rods for dental bases Abutment &Bridge) needs to match the processing equipment and clinical needs.
Common specifications are as follows:
|
Parameter |
range |
remarks |
|
Diameter mm |
3.0--30 |
6.0 8.0 10.0 normal use |
|
Length mm |
50--500 (customized 1000mm available) |
100mm/200mm sectional |
|
Tolerance mm |
0.05(High precision 0.02) |
Affects the assembly accuracy after cutting |
|
Surface |
polished |
Some require oxidation or passivation treatment |
Key Mechnical Properties
1. Core mechanical performance requirements
Dental titanium rods (ASTM F136/67 TC4 Ti rods for dental bases Abutment &Bridge) must meet the mechanical stability requirements in the long-term oral environment. The key indicators are as follows:
Static mechanical properties
|
Performance |
TC4 TI-AL-4V Value |
Gr2 pure titanium value |
Clinical |
|
Tensile strength (MPa) |
860 |
345 |
Ensure that the restoration can bear the bite force for a long time |
|
Yield strength (MPa) |
795 |
275 |
Prevent permanent deformation (such as bridge bending) |
|
Elongation (%) |
10 |
20 |
Pure titanium is easier to process,TC4 is more suitable for high stress scenes |
2. Dynamic mechanical properties
a:Fatigue resistance: Need to pass 10 cycle test (load simulates chewing force), TC4 is better (especially suitable for multi-unit implant bridges).
b:Elastic modulus: TC4: 110GPa, close to natural bone (reduces stress shielding effect).
3. Processing adaptability
a:Cutting performance: High-purity titanium (impurity Os0.18%) can reduce tool wear.
b:Weldability: Pure titanium is easier to laser weld, and TC4 requires protective gas (such as Baoqi) to match the platform.
Key Chemical Performance Requirements
Chemical properties directly affect biological safety and corrosion resistance:
Composition control (ASTM F67/F136) (ASTM F136/67 TC4 Ti rods for dental bases Abutment &Bridge)
|
Composition |
TC4 wt% |
Titanium % |
Risk point |
|
Al |
5.5--6.5 |
- |
Excessive AI may reduce biocompatibility |
|
V |
3.5--4.5 |
- |
Excessive V ions may cause cytotoxicity |
|
O |
≤0.13 |
≤0.25 |
High oxygen content reduces ductility |
|
Fe |
≤0.25 |
≤0.3 |
Impurities affect corrosion resistance |
a. Corrosion resistance for ASTM F136/67 TC4 Ti rods for dental bases Abutment &Bridge
Simulated oral test: Soaked in artificial saliva with pH = 2~9 for 30 days, the corrosion rate must be <0.001mm/year.
Passivation layer stability: The natural oxide film (Ti0:) must be intact and can be enhanced by anodic gasification.
b. Biocompatibility
Must pass IS010993-5 (cytotoxicity) and IS010993-10 (sensitization).
Core Concerns When Purchasing:
1. Qualifications and certifications
Required items: IS013485 quality management system, FDA/CE registration certificate, material composition report (SG5, etc.).
Bonus points: MDR (EU new medical device regulations) compliance, long-term clinical follow-up evidence.
2. Performance parameters
Directly request to provide mechanical properties test report (including fatigue data)
Preferentially choose low-oxygen titanium rods (such as Gr2ELI or TC4EL) to ensure the processing yield rate.
3. Supply chain stability
Diameter/tolerance needs to be supplied for a long time to avoid frequent adjustment of processing parameters.
Surface treatment (such as sandblasting, pickling) is better to clarify the process standards
4. Cost and delivery time
The price of large-diameter TC4 materials is higher, and customers may compare the cost-effectiveness of pure titanium and TC4.
For urgent orders, pay attention to the minimum order quantity (MOQ) and delivery cycle (usually 2-4 weeks)
Summary and Suggestions
TC4 titanium rod (ASTM F136/67 TC4 Ti rods for dental bases Abutment &Bridge): suitable for high-load field recording (such as full-mouth implant bridge), the composition and fatigue performance must be strictly controlled.
Pure titanium rod: suitable for economical single crown or removable denture, pay attention to oxygen content and ductility.
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