Surface treatment method applied to titanium or titanium alloy dental implant

A technology for dental implants and surface treatment, applied in dentistry, dental implants, medical science, etc., can solve the problems of inability to completely remove residual particles, reduced biological activity of implants, strong sulfuric acid corrosion hazards, etc., to speed up the speed of osseointegration , the effect of promoting adhesion and improving surface bioactivity

Inactive Publication Date: 2019-11-29
GUANGZHOU HICARE DENTAL EQUIP & MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, during the sandblasting process, some sand particles will be embedded in titanium or titanium alloy. Even if acid etching is used in the later stage, the residual particles cannot be completely removed, which will reduce the biological activity of the implant.
On the other hand, the existing sandblasting and acid etching methods mostly use sulfuric acid, hydrochloric acid, and hydrofluoric acid as acid etching solutions, among which sulfuric acid corrosion is extremely harmful, hydrochloric acid is highly irritating to volatilization, and hydrofluoric acid is extremely toxic. The use does not meet the requirements of modern industrial cleanliness and safe production

Method used

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  • Surface treatment method applied to titanium or titanium alloy dental implant
  • Surface treatment method applied to titanium or titanium alloy dental implant
  • Surface treatment method applied to titanium or titanium alloy dental implant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A surface treatment method applied to a TC4 titanium alloy dental implant, comprising the steps of:

[0027] (1) Polishing treatment: Use 800#, 1000# emery paper to polish the surface of the TC4 titanium alloy dental implant to remove impurities on the surface of the implant;

[0028] (2) Sandblasting: Sandblasting is performed on the surface of the polished TC4 titanium alloy dental implant under a pressure of 0.3Mpa. After the sandblasting is completed, ultrasonic cleaning (45KHz) with deionized water is used to assist washing for 20 minutes;

[0029] (3) Acid etching treatment: Prepare a certain proportion of mixed acid solution (1 mol / L oxalic acid, 5 mol / L phosphoric acid), and perform acid etching treatment on the TC4 titanium alloy dental implant after sandblasting at 85°C for 30 minutes;

[0030] (4) Washing treatment: the TC4 titanium alloy dental implant after the acid etching treatment was placed in an ultrasonic machine (45KHz), and washed with deionized wat...

Embodiment 2

[0033] A surface treatment method applied to a TC4 titanium alloy dental implant, comprising the steps of:

[0034] (1) Polishing treatment: Use 800#, 1000# emery paper to polish the surface of the TC4 titanium alloy dental implant to remove impurities on the surface of the implant;

[0035] (2) Sandblasting: Sandblasting is performed on the surface of the polished TC4 titanium alloy dental implant under a pressure of 0.4Mpa. After the sandblasting is completed, ultrasonic cleaning (50KHz) with deionized water is used to assist washing for 20 minutes;

[0036] (3) Acid etching treatment: prepare a certain proportion of mixed acid solution (0.4mol / L oxalic acid, 1.5mol / L phosphoric acid), and perform acid etching treatment on the TC4 titanium alloy dental implant after sandblasting at 85°C for 30 minutes;

[0037] (4) Washing treatment: the TC4 titanium alloy dental implant after the acid etching treatment was placed in an ultrasonic machine (50KHz), and washed with deionized w...

Embodiment 3

[0040] A surface treatment method applied to a TC4 titanium alloy dental implant, comprising the steps of:

[0041] (1) Polishing treatment: Use 1000#, 2000# emery paper to polish the surface of the TC4 titanium alloy dental implant to remove impurities on the surface of the implant;

[0042] (2) Sandblasting: Sandblasting is performed on the surface of the polished TC4 titanium alloy dental implant under a pressure of 0.4Mpa. After the sandblasting is completed, use deionized water ultrasonic (65KHz) to assist washing for 20 minutes;

[0043] (3) Acid etching treatment: prepare a certain proportion of mixed acid solution (2.5 mol / L oxalic acid, 8.5 mol / L phosphoric acid), and perform acid etching treatment on the TC4 titanium alloy dental implant after sandblasting at 85°C for 30 minutes;

[0044] (4) Washing treatment: the TC4 titanium alloy dental implant after the acid etching treatment was placed in an ultrasonic machine (65KHz), and washed with deionized water for 30 min...

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Abstract

The invention relates to the dental implanting field, in particular to a surface treatment method applied to a titanium or titanium alloy dental implant. The surface treatment method comprises the following steps: performing sand spraying treatment on the titanium or titanium alloy dental implant; and using a phosphoric acid/oxalic acid mixed solution to perform acid etching treatment after sand spraying is accomplished, thereby obtaining the titanium or titanium alloy dental implant with a multistage hole structure. The surface treatment method has the advantages that the process is simple, is safe, is environmentally friendly and is beneficial for reducing cost. The implant treated by the process defines the multistage hole structure comprising 10-50-[mu]m large holes and 2-5-[mu]m smallholes, so that residual particles are greatly reduced (average particle residues smaller than 5/mm<2>), surface biological activity can be improved, adhesion, on the implant surface, of osteoblast ispromoted, bone combining speed is favorably increased, and success probability of dental implanting is improved.

Description

technical field [0001] The invention relates to the field of dental implants, in particular to a surface treatment method applied to titanium or titanium alloy dental implants. Background technique [0002] In the research and application of artificial implants, titanium and titanium alloy materials have attracted much attention because of their low density, low modulus, high strength, and corrosion resistance. However, untreated titanium materials have problems such as low osseointegration rate, long implant cycle, and unstable interface in oral implants. [0003] For the surface preparation of implants, the sandblasting-acid etching method is generally accepted: [0004] Patent CN 107854724 A discloses a method for constructing the active surface of an implant. After sandblasting, it is treated with "hydrochloric acid / hydrofluoric acid", followed by alkali heat treatment, and finally a silver-loaded polymer layer is introduced on the surface of the implant to improve anti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F1/26A61C8/00B24B27/033B24C1/00B24C11/00
CPCA61C8/00B24B27/033B24C1/00B24C11/00C23F1/26
Inventor 张德贵周兴旺霍进杰
Owner GUANGZHOU HICARE DENTAL EQUIP & MATERIAL CO LTD
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