Medical titanium alloy special for implant capable of being immediately implanted and preparation method of medical titanium alloy
The technology of titanium alloy and implant is applied in the field of special medical titanium alloy for immediate implantation and its preparation, which can solve the problems of affecting immediate implantation ability, affecting implant biocompatibility, etc. Effect
Active Publication Date: 2019-08-23
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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Problems solved by technology
Although titanium alloys such as Ti-6Al-4V and Ti-6Al-7Nb have higher strength than CP Ti, both alloys contain Al, which will affect the biocompatibility of implants to a certain extent. Immediate Planting Ability
Method used
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Embodiment
[0025] Embodiments: Examples 1-6 are medical material titanium alloys containing Cu element, and its chemical composition is shown in Table 1. Controlled smelting is carried out according to the chemical composition range of the present invention. And after the following heat treatment and thermal processing process:
[0026] First heat treatment: after billet forging, before rolling into bars, keep it warm in an environment of 900-1200°C for 0.5-6h, and water-cool to room temperature.
[0027] The second hot processing: rolling in the environment of 720 ~ 850 ℃, the strain rate is greater than 0.1s -1 , the bars obtained after rolling are used for subsequent implant processing.
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The invention relates to the field of medical titanium alloys, in particular to a medical titanium alloy special for a narrow-diameter high-strength implant capable of being immediately implanted anda preparation method of the medical titanium alloy. The medical titanium alloy is prepared from, by weight percent, 14%-17% of Zr, 3.0%-10% of Cu and the balance Ti. The preparation method of the medical titanium alloy comprises the steps that after cogging and forging and before rolling, heat preservation is carried out for 0.5-6 hours at the temperature of 900 DEG C to 1200 DEG C, and water cooling is carried out to reach the room temperature; and rolling is carried out at the temperature of 720 DEG C to 850 DEG C, the strain rate is larger than 0.1 s<1>, and a bar obtained after rolling iscarried out is used for subsequent implant processing. According to the medical titanium alloy special for the narrow-diameter high-strength implant capable of being immediately implanted, immediate planting can be achieved without any surface treatment, and firm combination of the implant and bone tissue is achieved. According to the preparation method of the medical titanium alloy, the implant narrow in diameter (3.0-3.5 mm) can be prepared and is high in strength, and the aim of firm implanting on the narrow edentulous gum is achieved.
Description
technical field [0001] The invention relates to the field of titanium alloy materials, in particular to a special medical titanium alloy for immediate implantation and a preparation method thereof. Background technique [0002] Dental implant is the biggest research progress in stomatology in the 20th century, and it has become the first choice for the treatment of dentition defect / loss and has been widely used. Dental implants are considered the third set of teeth for humans. The number of patients with dentition defects in my country accounts for 20-30% of the total number, and the growth rate of China's current implant market exceeds 30%. The key to the success of an implant is its solid integration with the bone tissue. Professor Branemark, the father of modern dental implants, pioneered the concept of osseointegration, which refers to the firm, lasting and direct combination between the living bone tissue of the human body and the titanium implant, that is, the surfac...
Claims
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Login to View More IPC IPC(8): C22C14/00C22F1/18A61L27/50A61L27/06
CPCC22C14/00C22F1/183A61L27/06A61L27/50A61L2430/12A61L27/047
Inventor 张书源王海任玲可力杨柯孙子晴
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI