The invention discloses a method for preparing a two-stage micron-submicron microstructure on the surface of a titanium alloy dental implant. The titanium alloy implant is activated, and is processed through surface modification such as direct current electrolytic etching and alternating current etching, so that a two-stage micron-submicron microstructure shape can be formed on the surface of the implant. The two-stage micron-submicron microstructure shape is prepared on the surface of the titanium alloy dental implant, so that the method achieves the property of guiding the adhesion of osteoblasts, can simulate natural histomorphology in vivo, can guide the bone matrix formation on the surface rapidly, and can promote the formation of good synosteosis. Therefore, the titanium alloy dental implant can promote the formation of new bones, can short the healing time, and can achieve the ideal effect that the titanium alloy dental implant can take on the recovery function as soon as being implanted further.

Method for preparing two-stage micron-submicron microstructure on surface of titanium alloy dental implant

The invention relates to the field of dental implant materials, and discloses a preparation method for a silver-carrying dental implant. The preparation method is characterized by comprising the following steps of: 1, selecting pure titanium or titanium alloy to be processed into an implant base, polishing the surface of the implant base, ultrasonically cleaning with acetone, absolute ethanol andde-ionized water in sequence, and then blow-drying; 2, preparing a titanium dioxide nanotube array layer on the outer surface of the implant base by using an anode oxidation process, cleaning with absolute ethanol and de-ionized water in sequence, and then annealing for 0.5-1.5 hours at the temperature of 150-250 DEG C; and 3, loading silver on the surface of the titanium dioxide nanotube array layer by using a plasma immersion type ion injection and deposition process to form a silver ion layer, then cleaning with de-ionized water, and drying to obtain the dental implant carrying silver withthe titanium dioxide nanotube array layer.

Preparation method for silver-carrying dental implant

The invention provides a preparation method of a titanium-based airtifical tooth with a poly L lactic acid (PLLA)/nano hydroxyapatite (nHA) surface active coating. The preparation method comprises the four steps of preparing a titanium artificial tooth blank, spraying a polyether ether ketone (PEEK) resin primer, preparing and coating a PLLA/nHA composite material and degrading the surface. According to the preparation method disclosed by the invention, PEEK resin is utilized as a fusing attachment medium, the PLLA/nHA composite material is utilized as a coating to be firmly sprayed on the surface of an implantation portion of the titanium artificial tooth blank, then poly L lactic acid on the surface of the coating is partially degraded through the characteristic that the poly L lactic acid is more quickly degraded than nano hydroxyapatite, nano hydroxyapatite particles on the surface of the coating are more exposed out, and bone induction and synosteosis are more facilitated. According to the artificial tooth prepared in the preparation method, excellent characteristics of the PLLA/nHA composite material can be fully given to play, degrading time conforms to a bone growth period, biocompatibility is good, bond inductivity is good, synosteosis strength is high, and a metal ion allergy phenomenon is prevented from being generated.

Preparation method of titanium-based artificial tooth with poly L lactic acid (PLLA)/nano hydroxyapatite (nHA) surface active coating

The invention relates to a dental implant and a preparation method thereof. The dental implant comprises a titanium substrate and a honeycomb nano titanium oxide film layer, wherein the honeycomb nano titanium oxide film layer is formed on the surface of the titanium substrate in situ to form a honeycomb nano shape on the surface of the dental implant; the oxygen content of the honeycomb nano titanium oxide film layer is reduced with increase in thickness of the film layer and is gradually transited to the titanium substrate. The honeycomb nano titanium oxide film layer is formed on the surface of the titanium substrate in situ so as to form the honeycomb nano shape on the surface of the dental implant, wherein the honeycomb nano titanium oxide film layer is thin, has better strength, is not obviously layered with the titanium substrate and is firm in combination, and the regular nanostructure can effectively reinforce the adhesion of mesenchymal stem cells to the surface of the implant and the expression of alkaline phosphatase activities and osteogenesis-related genes, and shows superior osteogenic differentiation induction capacity, so that the long-term stability and the success rate of the dental implant are improved.

Dental implant and preparation method thereof

The invention provides a surface treatment method of a titanium implant The surface treatment method comprises the following steps: step S1, forming holes in the surface of the titanium implant; step S2, carrying out the surface hydrophilic treatment on the titanium implant By utilizing the technical solution, after the implant with the hydrophilic surface can be rapidly immersed by blood and body liquid of the human being, after the titanium implant is planted, the auto-healing mechanism of the human body can be rapidly activated, namely, the bone restoration and formation are began, the implant-bone combination quality can be improved, and the restoration time of a wound can be shortened

Surface treatment method of titanium implant

The invention discloses a preparation method of a titanium dental implant, which includes the following steps: arranging the dental implant to be in spiral shape, increasing the initial contact area of the implant, improving the initial stability of the implant, increasing the surface area of the implant and improving the stress distribution at the bone interface; obtaining a rough surface through abrasive blasting; designing a porous structure on the surface of the implant through a laser etching method; preparing a porous TiO2 oxide film on the surface of the implant through an anodic oxidation method, wherein the oxide film has a rough surface and has round pits in different sizes at local parts; treating the anodized titanium surface through alkali liquor to form a titanium gel layer rich in Ti-OH groups which induce the production of calcium phosphate crystal nucleus to form an osteoid apatite layer. The invention processes the medical pure titanium to be in spiral shape and modifies the surface of the implant through a series of methods of abrasive blasting, laser etching and anodic oxidation so as to enhance the bonding strength of the implant and the bone and to improve the success rate of the repair of the implant.

Preparation method of titanium dental implant

A surface activation method of a dental implant comprises: putting a titanium implant in 1-3M of H2SO4 liquid, using the titanium or titanium alloy of the titanium implant as an anode and using a Pt material as a cathode to carry out anode oxidation by using an anode oxidation method, preparing an oxidation film with a three-dimensional spherical pore microstructure on a surface, and existing round pits in different sizes and with apertures of 100-200nm in local areas; and putting the titanium implant with the oxidized anode in 3-5M of NaOH alkali solution for processing and forming a titanium gel on the surface, wherein the enriched Ti-OH groups induce the generation of calcium phosphate crystal nucleuses to form a bone-like apatite layer. The invention uses the combination of the anode oxidation method and an alkali process method for preparing an active TiO2 coating layer on the surface of the titanium alloy, the implant processed by the anode oxidation method has good compatibility with bone, and bonding strength and bone sediment yield are both obviously higher than that of the unprocessed titanium, thereby greatly improving the clinic success ratio of the dental implant.

Jiao Jun

Papers

Preparation method of titanium dental implant

Surface activation method of dental implant