Method for treating surface of implant by laser processing

Abstract

The present invention relates to a method for treating the surface of an implant by means of laser processing, and more specifically, to a method for treating the surface of an implant by means of laser processing, whereby the surface of a dental implant is repeatedly formed into an identical pattern having excellent synostosis, and thus the quality of the implant surface treatment can be greatly improved. The success rate of synostosis is improved.

Description

Technical Field

[0001] The present invention relates to a surface treatment method for an implant, and more specifically, to a surface treatment method for an implant that can utilize laser processing to repeatedly form the surface of a dental implant into the same pattern with excellent bone integration, thereby significantly improving the quality of the implant surface treatment and the success rate of bone integration. Background Art

[0002] Implant is a dental treatment method that is performed after tooth extraction as the last option for treating decayed or winded teeth.

[0003] Generally, during implantation, a screw-shaped implant body is implanted into the jawbone, an abutment is connected thereto, and then an artificial tooth, namely a crown, is placed over the abutment.

[0004] Different from the conventional method of manufacturing bridge prostheses, the present invention has the following advantages: the function and aesthetics of the teeth can be restored without damaging the adjacent intact teeth.

[0005] In particular, when multiple molars are lost, only partial dentures are available. However, using implants eliminates the need for partial dentures. Furthermore, the gums and jawbone in the area where the teeth were lost will gradually resorb and shrink over time, but implant treatment can prevent these problems.

[0006] On the other hand, the most important thing in implant treatment is to integrate the implant into the jawbone after implantation. If the bone integration of the implant cannot be achieved well, the implant will shake in the jawbone and cause inflammation, and the bite force (the force of chewing food) cannot be restored. In severe cases, the side effect of implant falling off will occur.

[0007] In the past, in order to improve the bone integration of implants, the surface of implants was treated by physical and chemical methods such as SLA (sandblasted, large-grit, acid-etched), RBM (Resorbable Blast Media), anodizing, and etching. Such surface treatment methods involve sandblasting by rapidly spraying multiple beads to form an arbitrary pattern, cleaning, and adjusting the average surface roughness (Ra).

[0008] On the other hand, such surface treatment methods all include an acid pickling process, and in order to remove residual acid on the surface, a cleaning process is required. At this time, if residual acid exists on the surface due to problems such as the operator's inattention to adjusting the concentration of the cleaning solution, it may cause serious problems such as corrosion of the surrounding bones or inflammatory reactions after the implant is implanted, thereby causing the implant to fail.

[0009] Furthermore, conventional physical and chemical surface treatments arbitrarily create porosity and roughness on the implant surface, making it difficult to form the same pattern under the same conditions. This results in a limited degree of improvement in osseointegration. Summary of the Invention

[0010] Problems to be solved by the invention

[0011] The present invention has been developed to solve the above-mentioned problems, and an object of the present invention is to provide a surface treatment method for an implant in which the pattern on the implant surface is repeatedly formed into the same pattern that is excellent in osseointegration, thereby maximizing the osseointegration effect.

[0012] In addition, the present invention aims to provide a surface treatment method for an implant that can fundamentally solve the problem of residual acid on the implant surface, thereby preventing the residual acid from corroding the surrounding bone or causing inflammation.

[0013] In addition, another object of the present invention is to provide a surface treatment method for an implant as follows: no surface treatment is performed on the portion of the surface thread of the implant that is directly inserted into the jawbone, thereby minimizing the frictional heat generated during implantation and preventing wounds on the bone, thereby improving the success rate of the implant surgery.

[0014] Means for solving problems

[0015] In order to solve the above-mentioned purpose, the present invention provides a surface treatment method of an implant using laser processing, which is characterized in that it includes the following steps: performing physical and chemical treatment on the surfaces of multiple implants, and changing the treatment conditions to perform surface treatment in a manner to form different porosities and roughnesses; photographing the surface patterns of the surface-treated implants; performing clinical operations on the surface-treated implants to screen the implants with the best bone integration; and laser processing the surfaces of the implants that have not been surface-treated into the surface patterns of the screened implants to complete the surface treatment of the implants.

[0016] In a preferred embodiment, the above-mentioned physical and chemical treatment conditions include the size of the beads, the injection pressure and injection time of the beads in the sandblasting process, and the type of acid and cleaning time in the pickling process.

[0017] In a preferred embodiment, among the threads on the surface of the implant, except for the portion inserted into the bone, the above-mentioned laser processing is performed only on the threads and the thread valleys of the portion not inserted into the bone.

[0018] In addition, the present invention also provides an implant surface-treated by the above surface treatment method.

[0019] Effects of the Invention

[0020] The present invention has the following excellent effects.

[0021] First, according to the surface treatment method of the implant of the present invention, the surface pattern most conducive to bone fusion can be repeatedly formed on the implant through laser processing, which can fundamentally avoid the problem of residual acid left on the implant.

[0022] In addition, according to the surface treatment method of the implant of the present invention, no rough part is formed on the threaded portion that is directly in contact with the jawbone during implantation, which can reduce the heat and trauma generated in the bone during implantation and greatly improve the success rate of bone fusion. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 1 is a flowchart illustrating a surface treatment method of an implant according to an embodiment of the present invention.

[0024] Figure 2 These are diagrams for explaining a portion where a pattern is formed on the outer surface of an implant and a portion where a pattern is not formed in a surface treatment method of an implant according to an embodiment of the present invention.

[0025] (Explanation of Symbols)

[0026] 100: Implants

[0027] 100a: The part of the thread that inserts into the bone

[0028] 100b: The portion of the thread that is not inserted into the bone

[0029] 100c: thread bottom DETAILED DESCRIPTION

[0030] Regarding the terms used in the present invention, general terms that are currently widely used have been selected as much as possible. In specific cases, there are also terms that are arbitrarily selected by the applicant. In such cases, the meaning of the term should not be considered simply from the name of the term, but should be understood by considering the meaning recorded or used in the detailed description of the invention.

[0031] Hereinafter, the technical structure of the present invention will be described in detail with reference to preferred embodiments shown in the accompanying drawings.

[0032] However, the present invention is not limited to the embodiments described herein, and may be embodied in other forms. Throughout the specification, the same reference numerals denote the same components.

[0033] Figure 1 1 is a flowchart illustrating a surface treatment method of an implant according to an embodiment of the present invention.

[0034] Reference Figure 1 The surface treatment method of an implant according to one embodiment of the present invention is a method capable of repeatedly forming the same pattern with good bone integration on the surface of the implant.

[0035] First, the implants 10, 20, and 30 that have not been subjected to surface treatment are prepared (S1000).

[0036] The implant is made of titanium and has threads formed on the outer surface as an implant body to be implanted into the jawbone.

[0037] However, the material of the above-mentioned implant is not limited to titanium.

[0038] Then, the implants 10, 20, and 30 are subjected to physical and chemical treatments respectively (S2000).

[0039] Here, the physical and chemical treatment refers to SLA (sandblasted, largegrit, acid-etched, sandblasting-large particle-acid etching surface treatment), RBM (Resorbable Blast Media, absorbable abrasive media surface treatment), anodizing, etching and other treatments. In particular, SLA refers to a surface treatment method in which a sand blaster 40 is used to spray beads 41 onto the surface of the implant 10 to impart porosity, and the porous implant 11 is treated with acid 50 to adjust the surface roughness Ra.

[0040] In addition, the above-mentioned implants 10 , 20 , and 30 are surface-treated according to different physical and chemical surface treatment conditions.

[0041] In addition, the above-mentioned processing conditions include the size of the beads in the above-mentioned sandblasting process, the injection pressure and injection time of the beads, and the type of acid (nitric acid, sulfuric acid, hydrochloric acid, etc.) and cleaning time in the pickling process.

[0042] That is, implants that have been physicochemically treated under different treatment conditions are manufactured.

[0043] Then, the surface patterns P1, P2, and P3 of the implants 10a, 20a, and 30a having different surface patterns are imaged (S3000).

[0044] Then, the implants 10a, 20a, and 30a are implanted in a patient to perform clinical work and select the implant 10a with the best bone integration (S4000).

[0045] That is, it is determined which surface pattern P1 provides the best bone integration.

[0046] Then, the surface of the implant 100 that has not been surface-treated is processed into a pattern P1 that is optimal for bone integration using the laser processing device 60 to complete the surface treatment ( S5000 ).

[0047] In the case of previous physical and chemical surface treatment, patterns were formed arbitrarily and only the average surface roughness Ra was adjusted, so the pattern with the best bone integration could not be repeatedly formed on the implant. The surface treatment method of the present invention can repeatedly form the pattern P1 with the best bone integration, and therefore has the advantage of greatly improving the success rate of bone integration.

[0048] In addition, in the case of conventional physical and chemical surface treatment methods, rough portions are formed in both the threads and the thread valleys of the implant. Therefore, when the implant is implanted, severe heat is generated in the thread portion that is in direct contact with the jawbone, causing trauma to the bone and inducing inflammation, thereby reducing the success rate of bone integration.

[0049] Below, refer to Figure 2 To explain more specifically, Figure 2 These are diagrams for explaining a portion where a pattern is formed on the outer surface of an implant and a portion where a pattern is not formed in a surface treatment method of an implant according to one embodiment of the present invention.

[0050] As described above, the implant 100 is divided into the threaded portion 100a that directly digs into the bone when implanted into the bone 1, the threaded portion 100b that is not directly inserted into the bone, and the thread valley 100c.

[0051] That is, in the case of the previous physical and chemical surface treatment, a rough portion is also formed on the threaded portion 100a inserted into the bone 1. Therefore, when the implant 100 is rotated and inserted into the bone 1, a large amount of frictional heat is generated, causing trauma to the bone, thereby causing inflammation and making it difficult to achieve bone integration.

[0052] However, in the case of the implant surface treatment method of the present invention, when performing laser processing, only the threaded portion 100b and the thread valley portion 100c that are not inserted into the bone 1 are laser processed as the processing area a into the selected surface pattern P1, thereby reducing the frictional heat and trauma generated when the implant is implanted, thereby greatly improving the success rate of bone integration.

[0053] Therefore, the surface treatment method of the implant according to the present invention can reduce the heat and trauma generated in the bone during implantation, and can repeatedly form the surface pattern that is most conducive to bone fusion on the surface of the implant, thereby greatly improving the success rate of implant surgery.

[0054] As described above, the present invention has been illustrated and described with reference to preferred embodiments. However, the present invention is not limited to the above embodiments, and various changes and modifications can be made by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A method for surface treatment of an implant using laser processing, characterized in that: The steps include: Physically and chemically treating the surfaces of multiple implants, and varying the treatment conditions to form surfaces with different porosities and roughness; Photographing the surface pattern of the implant after surface treatment; Perform clinical work on surface-treated implants to select implants with the best bone integration; and The surface of the implant that has not been surface treated is laser processed into the surface pattern of the screened implant to complete the surface treatment of the implant.

2. The surface treatment method of an implant using laser processing according to claim 1, characterized in that: The above-mentioned physical and chemical treatment conditions include the size of the sand beads in the sandblasting process, the injection pressure and injection time of the sand beads, and the type of acid and cleaning time in the pickling process.

3. The surface treatment method of an implant using laser processing according to claim 2, characterized in that: Among the threads on the surface of the implant, except for the portion inserted into the bone, the above-mentioned laser processing is performed only on the threads and the thread valleys of the portion not inserted into the bone. 4 . An implant, the surface of which is treated by the surface treatment method according to claim 1 .

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