KR102082885B1 - Abutment for implant - Google Patents

Abstract

The present invention relates to abutments for implants. Implant abutment according to an embodiment of the present invention is an implant abutment for connecting the crown and fixture, the abutment is composed of any one selected from the group consisting of metal, zirconia and mixtures thereof, The abutment made of the metal material relates to an implant abutment having a matte surface to prevent reflection of light during scanning.

Description

Abutments for implants {ABUTMENT FOR IMPLANT}

The present invention relates to abutments for implants. More specifically, the present invention relates to an implant abutment for matting a surface of an implant abutment made of a metal material or modifying the surface to suppress reflection of light.

The implant is a biocompatible implant body (fixture) in the jawbone that has been enlarged so that it can be sufficiently wrapped through additional surgery such as bone graft and bone elongation to the jawbone where the tooth is missing or the tooth is pulled out. It is a dental treatment to restore the function of natural teeth by planting.

The implant undergoes bone reconstruction of the jaw bone around the implant after osseointegration, a morphological, physiological and direct coupling between the jawbone where the normal function is maintained and the surface of the implant body. There are many kinds of such implants, but recently, intraosseous implants of the screw type are mainly used.

The implant is largely composed of fixtures, abutments and crowns. The fixtures are the roots of the teeth, mainly made of titanium, and the abutments are The part that connects the fixtures corresponds to the neck of the natural tooth, and the crown is the upper prosthesis of the implant, which corresponds to the head of the tooth in the natural tooth, and considers gold or ceramic materials in consideration of the position or condition of the tooth. Use

The implant first checks the position of the implant and drills to create a hole in the jawbone to accommodate the implant body. In other words, drill several times until the size is suitable for the diameter of the implant body, and then carefully implant the implant body (fixture). When satisfactory bone adhesion is achieved in the planted fixture, the process of connecting the abutment to create an artificial dental prosthesis (crown) is performed.

The artificial prosthesis makes an impression of the patient's tooth implanted with a fixture, creates a dental model based on the impression, and then models the prosthesis suitable for the patient's tooth shape based on the scan data obtained by scanning the dental model. Produced through the process of generating.

However, this method has a complicated problem of making an impression and making a model based on the impression. In consideration of this problem, it may be considered to insert the abutment model directly into the patient's mouth and scan.

At this time, in order to generate a model of the prosthesis suitable for the shape of the patient's teeth, the scan data obtained by scanning the tooth model should include accurate scan data (center coordinates and direction information of the screw holes of the fixture).

However, in the case of acquiring the scan data of the dental model using an optical scanner, the scan data can be acquired within a relatively short time. However, the exact fixture is accurate for the scanned data of the dental model acquired using the optical scanner. There is a problem that no scan data is included.

In addition, since the scan area is not exposed to the gum after being coupled to the fixture embedded in the gum of the patient, it is difficult to obtain scan data of the abutment model suitable for the tooth shape of the patient.

In the above scan method, there are two methods using a laser and a photographic method. The laser method is sensitive to reflection of light, so that the scan body of the conventional abutment model made of metal is not accurately scanned.

Thus, a method of reducing the reflection of light by spraying the abutment model may be considered, but there is a problem that a large data error may occur depending on the spraying method.

In addition, it is possible to consider a method of painting the abutment model using a pen, such as Korean Patent Publication No. 10-2013-0050021. However, a typical product of such a conventional pen, in particular, a pen having a liquid therein may be a correction pen. In the case of a correction pen containing a liquid correction liquid therein, it is sufficiently shaken before use for proper mixing of the correction liquid. There is a problem that it is difficult to control the appropriate amount of correction fluid to meet the user's needs, and if the ball at the end that controls the discharge of the correction liquid discharged from the correction pen falls out, the correction liquid flows out and damages other writing instruments or surroundings. It has been pointed out.

Therefore, it is necessary to develop an implant abutment that can be directly scanned in the oral cavity without making an impression or making a model based on the impression.

KR 10-2013-0050021 A

An object of the present invention by using an optical scanner to prevent the reflection of light when acquiring the scan data of the tooth model, to obtain a matte implant abutment that can ensure more accurate scan data of the tooth model To provide.

Another object of the present invention is to provide an implant abutment having a matte surface by increasing the surface roughness and inducing diffuse reflection of light through the surface treatment of the implant abutment made of a metal material.

In order to achieve the above object, the implant abutment according to an embodiment of the present invention is an implant abutment for connecting the crown and fixture, the abutment is a group consisting of metal, zirconia and mixtures thereof It is composed of any one selected from, the abutment induces diffuse reflection of light, the surface is matte.

The surface roughness Rz of the said abutment is 2.0 micrometers or less.

The abutment has a reflectance of 1% or less in the wavelength region of 380 to 780 nm.

The abutment has a gloss at 3.0 degrees or less at 3.0 or less.

The abutment may be formed with a plurality of fine irregularities of the surface.

The fine unevenness may be formed by applying mechanical processing of shot blasting or sand blasting.

The metal material is titanium material, chromium material, cobalt material, platinum, gold or alloy materials thereof.

Hereinafter, the present invention will be described in more detail.

Implant of the present invention refers to a bio-medical medical device that is buried in the living body exhibits the desired function, the dental implant is placed in or on the jaw bone for the purpose of supporting the prosthesis for the restoration of the missing dental plaque (gum and It is meant to include all the fixtures (planted between the gum bones).

The implant generally consists of a fixture, abutment and crown portion. Implant of the present invention refers to the concept including the fixture, abutment and crown.

An implant abutment according to an embodiment of the present invention is an implant abutment for connecting a crown and a fixture, and the abutment induces diffuse reflection of light, characterized in that the surface is matte.

The abutment may be a metal material, a zirconia material or an inorganic material having a hardness enough to be used as an abutment, and other nonmetal materials.

On the other hand, but not limited to, preferably the abutment may be to use a metal material. If the abutment is manufactured from a metal material, there is a problem in that accurate data cannot be obtained due to reflection of light during scanning. In the present invention, there is a problem due to the glossiness of the metal material, so that the problem can be solved, it relates to an abutment composed of a metal material having a matte surface by inducing diffuse reflection of light on the surface of the abutment.

The abutment is not limited to being coupled to form a straight line with the fixture, and includes being coupled to form a fixed angle with the fixture. In addition, the abutment can be applied to the present invention regardless of its shape.

The diffuse reflection of the light is reflection of light reflected in multiple directions when light is reflected. In contrast to specular reflection reflected in only one direction. Light may be reflected in multiple directions, thus exhibiting a matte property, unlike specular reflection.

The present invention is characterized by inducing diffuse reflection of light on the surface of the abutment made of a metal material, the surface is matte, wherein, in order to induce diffuse reflection of light, the surface roughness Rz is 2.0㎛ or less, preferably It is 0.5-1.8 micrometers, More preferably, it is 0.5-1.5 micrometers, but is not limited to the said illustration.

The surface roughness Rz refers to the surface roughness of the abutment, and Rz is the ten point average roughness of the surface irregularities, and the ten point average roughness is the average value of the five highest height peaks and the five lowest valleys within the measurement length in the surface unevenness curve. Means the difference. The surface roughness Rz is the surface roughness of the abutment. The surface is not uniform, and irregularities are formed. By the unevenness, when light is incident and reflected, the reflection of the abutment is induced without being reflected at a constant reflection angle, so that the surface of the abutment exhibits a matte appearance.

The surface roughness of the abutment may be formed by applying a mechanical process of a short blast (Shot Blast) or sand blasting (Sand Blast) processing abutment made of a metal material to form a plurality of fine irregularities. Thereafter, a heat treatment process for generating a surface oxide film is performed.

The shot blast is a step of surface-treating the fine particles, called shots or grit, by rotating them at a high speed of about 2,000 revolutions per minute onto the casting.

The sand blasting is a process of blowing sand with compressed air.

Both the short blast or sand blasting process is a mechanical process for the surface treatment of the abutment made of a metal material, it is possible to form a plurality of irregularities on the surface through mechanical processing.

By the above mechanical processing, a plurality of fine unevennesses may be formed on the surface of the abutment, and such fine unevennesses may have a surface roughness Rz of 2.0 μm or less, and thus may be manufactured to a matte surface.

Abutment according to an embodiment of the present invention is composed of a metal material, the metal material is titanium material, chromium material, cobalt material, platinum, gold or alloys thereof.

The metal material may generally react with oxygen in the air to form an oxide film. For example, when the abutment is made of titanium, titanium reacts with oxygen or moisture in the air to form an oxide film of Ti0 ₂ .

At this time, a TiO ₂ oxide film of several nm is formed, and this oxide film can prevent further corrosion. However, the oxide film formed by reacting with oxygen or moisture in the air is too thin in thickness, and the composition is heterogeneous, which may still cause problems in corrosion resistance and biocompatibility.

According to the present invention, the surface of the abutment is subjected to mechanical processing for surface treatment. At this time, the oxide film may be formed to a depth deeper than that of the naturally occurring oxide film by heat generated by the mechanical processing.

That is, during the blasting process, the blasting particles generate heat due to the impact on the surface of the metal material, and the oxide film may be formed by the heat. As the oxide film is formed by heat, the oxide film may be formed deeper than the naturally occurring oxide film, thereby improving corrosion resistance and biocompatibility.

In addition to the mechanical processing, the heat treatment process is carried out, the temperature is raised to 50 to 100 ℃ per minute, and the heat treatment for 1000 hours, pure oxygen atmosphere for 1 hour 30 minutes to 2 hours, then cooled to a temperature of 30 to 40 ℃ per minute And rapid cooling to -20 占 폚.

Due to the heat treatment, an oxide film layer may be formed on the surface of the abutment made of a metal material, and the durability of the abutment may be further improved by the oxide film layer.

When the surface roughness Rz exceeds 2.0㎛, the matte effect is excellent, but when the crown is fastened with the crown, metal particles may be generated in the abutment and may enter into the mouth. The problem is that they reflect light when scanning.

In general, the implant first checks the position of the implant and drills to create a hole for the implant body to enter the jawbone. In other words, drill several times until the size is suitable for the diameter of the implant body, and then carefully implant the implant body (fixture). When satisfactory bone adhesion is achieved in the planted fixture, the process of connecting the abutment to create an artificial dental prosthesis (crown) is performed.

The artificial prosthesis makes an impression of the patient's tooth implanted with a fixture, creates a dental model based on the impression, and then models the prosthesis suitable for the patient's tooth shape based on the scan data obtained by scanning the dental model. Produced through the process of generating.

In order to obtain the scan data, the wavelength of light generated when scanning the tooth model is generally in the visible region and the infrared region. Therefore, in the present invention, the reflectance of light in the wavelength range is 1% or less, and more specifically, the reflectance in the wavelength range of 380 to 780nm is 1% or less.

When the reflectance exceeds 1%, a problem of inaccurate scan data may be generated due to the reflection of light, so that the reflectance in the wavelength region of the generated light may be maintained at 1% or less during scanning. .

In addition, the abutment of the present invention has a glossiness (Gloss) at 60 degrees of 3.0 or less, preferably 2.0 or less, and more preferably 1.5 or less. When the glossiness is greater than 3.0, it means that the reflection of light occurs due to the gloss, and the abutment according to the embodiment of the present invention is characterized in that the glossiness is 3.0 or less.

The matte implant abutment includes a hydrophobic coating layer on the surface, the hydrophobic coating layer may be formed of a hydrophobic coating composition.

In accordance with an embodiment of the present invention, the abutment includes a plurality of fine irregularities on the surface, characterized in that the surface is matte by the fine irregularities. It may further comprise a hydrophobic coating layer. The hydrophobic coating layer is finely formed to a thickness of 0.1 to 0.5㎛, prevents the reflection of light on the abutment surface and at the same time gives antibacterial.

When the hydrophobic coating layer is formed to less than 0.1㎛, there is a problem that the antimicrobial effect is insufficient, when formed to more than 0.5㎛, the coating layer fills the space between the fine irregularities on the abutment surface, the emission of light by the fine irregularities The effect of preventing can be lowered. That is, the hydrophobic coating layer is formed on the surface of the abutment, and is intended to increase the matte effect due to fine unevenness, and the coating layer alone has a problem of inferior matte effect. Therefore, when the thickness of the hydrophobic coating layer is formed to exceed 0.5㎛, according to the formation of a thick coating layer on the surface of the abutment, there is a problem that the anti-reflection effect due to fine unevenness is reduced.

The hydrophobic coating composition may include any one selected from the group consisting of fluorine-based high molecular compounds, silicon dioxide compounds, ceramic powders and mixtures thereof.

More specifically, the hydrophobic coating composition comprises a solvent selected from the group consisting of toluene, methyl ethyl ketone, and mixtures thereof, based on 100 parts by weight of the solvent, fluorine-based 5 to 30 parts by weight of the polymer compound; 5 to 10 parts by weight of the filler; 5 to 10 parts by weight of the ceramic powder and 1 to 10 parts by weight of the antimicrobial material may be included:

[Formula 1]

(Where n is an integer of 2 to 100, R ₁ and R ₂ are the same as or different from each other, and each independently hydrogen, deuterium, a halogen group, a hydroxyl group, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, substituted or unsubstituted) It is selected from the group consisting of an alkenyl group having 2 to 10 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 10 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 10 carbon atoms, and a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, The substituted alkyl group, substituted alkenyl group, substituted alkynyl group, substituted cycloalkyl group and substituted aryl group are substituted with one or more substituents selected from the group consisting of deuterium, halogen group, cyano group, nitro group and hydroxy group, and a plurality of When substituted with two substituents, they are the same as or different from each other.)

The fluorine-based polymer compound represented by Formula 1 is preferably a fluorine-based compound represented by Formula 2 or Formula 3 below, but is not limited thereto.

[Formula 2]

[Formula 3]

(Wherein n is an integer of 2 to 100 and R ₂ is an alkyl group having 1 to 10 carbon atoms substituted with a halogen group).

The fluorine-based polymer compound may exhibit hydrophobicity in the surface coating layer of the implant abutment made of a metal material. A large number of -F groups contained in the fluorine-based high molecular compound may be included, and may exhibit hydrophobicity by H ₂ O and the repulsive force.

The fluorine-based polymer compound and the filler may be included in a weight ratio of 1: 1 to 6: 1. Preferably, the fluorine-based polymer compound and the filler may be included in a weight ratio of 3: 1 to 5: 1. When the fluorine-based polymer compound and the filler is included less than 1: 1, there is a problem that the hydrophobicity is lowered. When the fluorine-based polymer compound is included in excess of 5: 1, the abutment composed of a metal material is included in excess of the fluorine-based polymer compound. There is a problem that the adhesive strength with the drop.

Fillers may be included to prevent reflection of physical properties and light of the coating layer. The filler is selected from the group consisting of sand, silica, talc, alumina, potassium carbonate, calcium carbonate, aluminum hydroxide, titanium oxide and carbon black, preferably silica, but not limited to the above examples.

Preferably, the silica is a porous particle, a mixture of the first silica and the second silica is included in the coating composition. The first silica has an average diameter of particles of 2.5 to 5 μm, and the second silica has an average diameter of particles of 1 to 1.5 μm. As the silica particles having different average diameters are mixed and used, when the coating layer is formed on the surface of the abutment using the hydrophobic coating composition according to an embodiment of the present invention, light may be configured to have a low refractive index. Can prevent the reflection. In addition, by including the first silica having an average diameter of 2.5 to 5㎛, it is possible to enhance the physical properties of the coating layer. When the crown is attached to the abutment or after bonding, it is possible to prevent a problem that the coating layer is easily broken by an external impact. More specifically, when the average diameter is less than 2.5㎛, there is a problem that the physical properties strengthening effect is inadequate, and when the average diameter is more than 5㎛, there is a problem that the light reflection effect is inferior.

Preferably, the silicon dioxide compound may be colloidal silica. In the case of using colloidal silica, the silica particles having colloidal properties may penetrate into the porous layer and be evenly coated, thereby greatly increasing the matt effect of the abutment. Furthermore, when the colloidal silica is formed, the coating layer formed is very thin, but can be very strongly attached to the surface of the abutment, and thus, the coating layer is not easily peeled off even by mechanical wear. In particular, since it exhibits excellent non-glossiness with low reflectance in addition to high durability, the effect aimed at in the present invention can be enhanced.

More specifically, by forming a coating layer with a hydrophobic coating composition including silica as a fluorine-based compound and a filler represented by the formula (1), it is possible to implement a high transmittance and a low reflectance, it is possible to implement an excellent reduced reflectance.

The antimicrobial material is isopropyl methyl phenol (Isopropyl methyl phenol), phenoxyethanol (Phenoxyethanol), chloroxylenol (Chloroxylenol), ethylhexylglycerin (Ethylhexylglycerin), glyceryl caprylate (Thymol) , Calcium phosphate-silver compound complex (Calcium phosphate-silver compound complex) and silver ion-silicate complex (Silver ion-silicate complex) can be selected from the group consisting of.

In the case of abutments, the risk of bacterial infection is high because they are exposed to the outside of the gums in the oral cavity.If the area around the implant is infected with bacteria, the loss of implants occurs due to the failure of osteointefration due to the deterioration of the alveolar bone. Implant treatment itself may be impossible, so it is important to prevent infection of the tissues around the implant.

In one embodiment of the present invention, by including the antimicrobial material, eluted to the area around the implant to act as an antibacterial against the bacteria of the tissue around the implant can prevent the adhesion failure of the implant due to bacterial infection.

More specifically, the calcium phosphate-silver compound complex means a silver compound coating of calcium phosphate, obtained by supporting a silver compound on calcium phosphate. The calcium phosphate-silver compound may include, for example, a Tricalcium Phosphate-silver compound complex.

In addition, the silver ion-silicate complex means glass, that is, a complex in which silver ions in the structure of the silicate are physically contained or bound, and silver ions are released from the complex to exhibit an antimicrobial effect.

Preferably, the antimicrobial material may be mixed with the natural antimicrobial material to maximize the antimicrobial properties. The natural antimicrobial material may be selected from the group consisting of garlic oil, rosemary oil, jojoba oil and carrot seed oil.

More preferably, the carrot seed oil is mixed with the calcium phosphate-silver compound complex or the silver ion-silicate complex, and the calcium phosphate-silver compound complex or the silver ion-silicate complex and the carrot seed oil are 1: 0.25 to 1: 0.6. When mixed in a weight ratio, the antimicrobial effect can be maximized. If the calcium phosphate-silver compound complex or silver ions-silicate complex containing carrot seed oil less than 0.25 and greater than 0.6, there is a problem that the antibacterial effect is inferior. By using a natural antimicrobial material mixed with the synthetic antimicrobial material, it is possible to further improve the antimicrobial effect.

In addition to the antimicrobial material, the ceramic powder is included to further enhance the antimicrobial properties, by releasing far infrared rays and anions, it is possible to maximize the antimicrobial effect of the tissue surrounding the implant. More specifically, it is selected from the group consisting of quartz, monzonite, gneiss, rhyolite tuff strontium, vanadium, zirconium, cerium, neodymium, lanthanum, barium, rubidium, cesium and gallium, but is not limited to the above examples.

The ceramic powder is contained in 5 to 10 parts by weight of the ceramic powder with respect to 100 parts by weight of the solvent, if less than 5 parts by weight of far infrared rays and anion release effect is inferior antimicrobial effect, economical when exceeding 10 parts by weight Falls.

The ceramic powder has an average diameter of 0.5 to 1.5 mu m, but is not limited to the above examples. If the average diameter of the particles is less than 0.5㎛, the problem of insufficient far infrared and anion release effect occurs, if it is more than 1.5㎛, included in the coating layer, there is a problem that the physical properties are lowered.

The surface treatment of the implant abutment of the present invention increases the surface roughness, induces diffuse reflection of light, and thus the surface is matte, thus reflecting light when acquiring scan data of a tooth model using an optical scanner. It is possible to obtain more accurate scan data of the dental model.

The implant abutment of the present invention has antimicrobial properties and can prevent bacterial infection problems that may occur due to the implant procedure.

Hereinafter, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.

Production Example 1: Preparation of abutment in which fine irregularities were formed

The abutment consisting of titanium was processed with a shot blast to form fine irregularities on the surface. More specifically, using alumina powder having a diameter of 20 to 60㎛, the process was performed at a distance of 1cm under 10bar conditions.

After the shot blasting process, the heat treatment process is carried out, the temperature is raised to 50 to 100 ℃ per minute, and the heat treatment for 1 hour 30 minutes to 2 hours at 1000 ℃, pure oxygen atmosphere, and then cooled to a temperature of 30 to 40 ℃ per minute And rapid cooling to -20 ° C.

Fine unevenness formed on the surface of the abutment was distinguished by measuring the surface roughness Rz, and the surface roughness of the more specific abutment is shown in Table 1 below.

The surface roughness was measured in accordance with JISB 0601-1994.

TR 1 TR 2 TR 3 TR 4 TR 5 TR 6 TR 7 Surface roughness (Rz) 2.0 1.8 1.5 1.0 0.5 0.1 3.0

Experimental Example 1: Measurement of Average Reflectance by Different Surface Roughness]

The average reflectance was measured using a Sol idSpec 3700 manufactured by SHIMADZU. More specifically, after fixing the measurement conditions with sampling inverval 1 nm, time constant 0.1 sec, slit width 20 nm, medium scanning speed, 100T mode was applied to measure the light in the wavelength range of 380nm to 780nm at room temperature. The results are shown in Table 2 below.

Experiment number reflectivity(%) TR 1 0.7 TR 2 0.88 TR 3 0.9 TR 4 0.91 TR 5 One TR 6 3 TR 7 0.67

According to Table 2, the higher the surface roughness, the lower the reflectance, it was confirmed that the matt effect is excellent. In other words, the smaller the reflectance, the better the matt effect.

Experimental Example 2: Measurement of Glossiness by Difference in Surface Roughness]

Using gloss meters (BYK, gloss meter), gloss at 60 degrees of the experiment Nos. TR1 to 7 abutments was measured. The results are shown in Table 3 below.

Experiment number Glossiness TR 1 1.2 TR 2 1.2 TR 3 1.3 TR 4 1.4 TR 5 1.5 TR 6 3.4 TR 7 1.0

According to Table 3, as the surface roughness increases, the glossiness is decreased, and the smaller the glossiness, the better the matte effect.

Experimental Example 3: Measurement of Physical Properties by Difference in Surface Roughness]

Pencil hardness was measured to evaluate scratch resistance, the pencil hardness was measured according to JIS K5600-5-4KS. Here, the pencil hardness was measured sequentially from 9B to 9H, the closer to 9B the hardness is weaker and the closer to 9H the hardness is stronger. The results are shown in Table 4 below.

Experiment number Scratch resistance TR 1 1H TR 2 2H TR 3 2H TR 4 4H TR 5 4H TR 6 6H TR 7 2B

According to Table 4, TR1, TR2 and TR7 was confirmed that the scratch resistance is lower than, compared to TR 2 to 6. However, when the reflectance and glossiness measurement results of Experimental Examples 1 and 2 were combined, TR 7 was excellent in reflectance and glossiness, but scratch resistance was poor, and thus it was not suitable for use as an implant abutment. Although scratch resistance is relatively excellent, reflectance and gloss are low, so that the probability of obtaining inaccurate data may be increased due to the reflection of light in a scanning process for obtaining a tooth shape.

As a result, abutments having a surface roughness of TR 1 to TR 5 are most suitable for use as abutments for implants, and more specifically, abutments of TR 3 to TR 5 will be most suitable.

Preparation Example 2: Preparation of Hydrophobic Coating Composition

To prepare a coating composition by mixing the components in accordance with the composition shown in Table 1 below. More specifically, the fluorine-based polymer compound was used a compound represented by the following formula (4):

[Formula 4]

(Where n is an integer from 2 to 100).

Experiment number menstruum Fluorinated Polymer Resin Silica Colloidal silica Ceramic powder Antimicrobial A Antibacterial substance B Antimicrobial C TN 1 100 5 5 - 5 5 - 5 TN 2 100 10 10 - 5 5 - 5 TN 3 100 15 5 - 5 5 - 5 TN 4 100 20 5 - 5 5 - 5 TN 5 100 30 5 - 5 5 - 5 TN 6 100 5 5 - 5 - 5 5 TW 1 100 0.5 One - 5 5 - 5 TW 2 100 40 5 - 5 5 - 5 TW 3 100 40 15 - 5 5 - 5 TW 4 100 5 15 - 5 5 - 5 TW 5 100 5 5 - 5 10 - - TW 6 100 5 5 - 5 - 10 - TC 1 100 5 - 5 5 5 - 5 TC 2 100 10 - 10 5 5 - 5 TS 1 100 20 - - - - - - TS 2 100 - 20 - - - - - TS 3 100 - - 20 - - - - TS 4 100 - - - 20 - - -

(Unit weight part)

Solvent: methyl ethyl ketone

Silica: mixing the first silica having an average diameter of 3 μm and the second silica having an average diameter of 1 μm in a ratio of 1: 1

Ceramic powder: a mixture of monzonite and rubidium

Colloidal silica: having a particle diameter of 1 to 100 nm and a SiO ₂ content of less than 30 w%

Antibacterial A: Calcium Phosphate-Silver Compound Complex

Antimicrobial material B: silver ion-silicate complex

-Antimicrobial C: Carrot Seed Oil

The components of the coating composition are the same as in Example 1 of Table 1 above, but different from the average diameter of the silica particles, to prepare a coating composition according to the composition of Table 6.

Experiment number Average diameter of silica particles 0.5 μm 1㎛ 1.5 μm 2㎛ 2.5 μm 3㎛ 5㎛ 6 μm TN 1 - 2.5 - - - 2.5 - - TN 7 - - 2.5 - - 2.5 - - TN 8 - 2.5 - - 2.5 - - - TN 9 - 2.5 - - - - 2.5 - TW 7 2.5 - - - - 2.5 - - TW 8 - - - 2.5 - 2.5 - - TW 9 - 2.5 - 2.5 - - - - TW 10 - 2.5 - - - - - 2.5

(Unit weight part)

Production Example 3: Production of abutment having a coating layer formed on the surface thereof

The coating composition of Experiment Nos. TN 1 to 9 and TW 1 to 8 was coated on the surface of Experiment No. TR 5, which had the best evaluation in reflectance, glossiness, and scratch resistance due to the difference in surface roughness, and 0.1 to 0.5 μm. The coating layer was formed to a thickness of.

[Experiment No. TW 11]

A coating layer was formed using the coating composition of TC 1 except that the thickness of the coating layer was formed to 1 μm.

Experimental Example 4: Evaluation of Physical Properties by Difference in Components of Coating Composition

100 pieces of the coated specimens were cut by a cutter to have a horizontal and vertical size of 1 mm, and 3M tape was attached and then removed to evaluate adhesion of the coating film. The evaluation result was evaluated by the following method.

◎: No abnormality.

(Circle): It is eliminated within ten.

(Triangle | delta): Eliminated within 50 pieces.

X: Completely eliminated.

Adhesion TN 1 ◎ TN 2 ◎ TN 3 ◎ TN 4 ○ TN 5 ◎ TN 6 ○ TN 7 ○ TN 8 ○ TN 9 ◎ TW 1 X TW 2 △ TW 3 X TW 4 △ TW 5 X TW 6 △ TW 7 X TW 8 X TW 9 X TW 10 △ TW 11 ○ TC 1 ◎ TC 2 ◎ TS 1 △ TS 2 X TS 3 ○ TS 4 X

Referring to Table 7, the test numbers TS 1 to 4 shows that the wear resistance and adhesion are low except for TS, and when the composition alone, TS 3 is relatively excellent in wear resistance and adhesion. You can see that.

On the other hand, in the case of Experiment Nos. TN 1 to 9 which proceeded to confirm the synergistic effect of each mixture as a mixed composition, it was confirmed that the scratch resistance and adhesion. On the other hand, in the case of the experiment numbers TW 1 to 10, it was confirmed through the experimental results that the scratch resistance and adhesion is reduced compared to the experimental examples classified as the TN.

On the other hand, referring to the experiment number TC 1 and TC 2, it can be seen that the use of colloidal silica instead of silica powder significantly increases the scratch resistance and adhesion. In particular, in the case of TC 1 and TC 2, not only the physical properties are remarkably excellent, but the coating layer itself is actually thin. Therefore, in the case of using colloidal silica such as TC 1 and TC 2, it can be used as a coating composition with excellent physical properties such as scratch resistance and adhesion, while having almost no problems such as error formation and heterogeneity depending on the coating layer formation as a thin coating layer. I can see the fact.

Experimental Example 5: Evaluation of the Antimicrobial Effect by the Component Difference of Coating Composition

E. coli was inoculated into the abutment formed with a coating layer with the coating composition of the experiment No. TN 1, TN 6, TW 5, TW 6, TC 1 and the concentration of the bacteria was measured after 24 hours, and the results are shown in the following table. 8 is shown.

Initial concentration (CFU / mL) Log (CFU / mL) after 24 hours Bacterial Reduction (%) TN 1 1.00ⅹ10 ⁵ 0 100 TN 6 1.00ⅹ10 ⁵ 0 100 TW 5 1.00ⅹ10 ⁵ 2.82 90.5 TW 6 1.00ⅹ10 ⁵ 2.60 92 TC 1 1.00ⅹ10 ⁵ 0 100

(CFU is a conceptual representation of the number of bacteria)

Referring to the experimental results according to Table 8, although the experiment No. TW 5 and Comparative Example 6 includes only the antimicrobial substances known to be excellent antimicrobial effect, as in Experiment No. TN 1 and TN 6, additionally natural oil When included, it was confirmed that excellent antimicrobial effect of the bacteria reduction rate is 100%. In addition, it can be confirmed that TC 1 also shows an excellent antibacterial effect.

Experimental Example 6: Evaluation of Gloss by Component Difference of Coating Composition

Using gloss meters (BYK Co., Ltd., gloss meter), the glossiness at the 60 degree angle of Experiment Nos. TN 1 to 9, TW 1 to 11, TC 1 and TC 2 abutment was measured. The results are shown in Table 9 below.

Experiment number Glossiness TN 1 2.0 TN 2 1.9 TN 3 2.0 TN 4 2.0 TN 5 3.0 TN 6 2.8 TN 7 2.7 TN 8 2.3 TN 9 2 TW 1 4 TW 2 6 TW 3 5 TW 4 4.8 TW 5 5.1 TW 6 5.5 TW 7 6 TW 8 5.7 TW 9 7 TW 10 7.8 TW 11 5 TC 1 1.0 TC 2 1.1

Referring to the above [Table 5], as a result of measuring the gloss, the lower the value means a matte. Experimental numbers TN 1 to 9 represent matte, whereas Experimental numbers TN 1 to 10 represent relatively gloss. It was confirmed that reflection of light may occur. On the other hand, the TC 1 and TC 2 can be seen that the matte effect is the best. Therefore, it can be seen that the composition according to TC 1 and TC 2 is excellent in physical properties and the coating layer is thinly formed and the matteness is greatly improved.

Although the preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

Claims (7)

Implant abutments for connecting crowns and fixtures,
The abutment is composed of any one selected from the group consisting of metal materials, zirconia materials and mixtures thereof, and in the abutment for implants having a matte surface,
The abutment includes a hydrophobic coating layer on the surface,
The hydrophobic coating layer is formed of a hydrophobic coating composition,
The hydrophobic coating composition comprises a fluorine-based high molecular compound, colloidal silica and ceramic powder represented by the formula
Abutments for implants:
[Formula 1]

here,
n is an integer from 2 to 100,
R ₁ and R ₂ are the same as or different from each other, and each independently hydrogen, deuterium, a halogen group, a hydroxyl group, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 10 carbon atoms, a substituted or unsubstituted group It is selected from the group consisting of a C 2-10 alkynyl group of a ring, a substituted or unsubstituted cycloalkyl group of 3 to 10 carbon atoms, and a substituted or unsubstituted aryl group of 6 to 30 carbon atoms,
The substituted alkyl group, substituted alkenyl group, substituted alkynyl group, substituted cycloalkyl group and substituted aryl group are substituted with one or more substituents selected from the group consisting of deuterium, halogen group, cyano group, nitro group and hydroxy group, and a plurality of When substituted with two substituents, they are the same as or different from each other. The method of claim 1,
The abutment has a surface roughness Rz of 2.0 µm or less.
Abutments for implants. The method of claim 1,
The abutment has a reflectance of 1% or less in the wavelength region of 380 to 780 nm.
Abutments for implants. The method of claim 1,
The abutment has a glossiness of less than 3.0 at 60 degrees.
Abutments for implants. The method of claim 1,
The abutment is formed with a plurality of fine irregularities of the surface
Abutments for implants. The method of claim 5,
The fine irregularities are formed by applying mechanical processing of shot blasting or sand blasting processing.
Abutments for implants. The method of claim 1,
The metal material is titanium, chromium, cobalt, platinum, gold or alloys thereof
Abutments for implants.