KR20230100614A - Hybrid ceramic prosthesis - Google Patents

Abstract

The present invention relates to a hybrid ceramic prosthesis, which has a color and light transmittance aesthetically similar to natural teeth by using a hybrid ceramic prosthesis of a new material, can minimize the amount of tooth removal during treatment, and uses a snap-fit fastening method. By fundamentally combining the prosthetic appliance and teeth, it reduces the burden of re-treatment due to prosthetic removal, and it can be applied relatively conveniently compared to existing materials, enabling one day-one stop prosthetic treatment, thereby reducing the burden of dental treatment on patients. Disclosed is a hybrid ceramic prosthesis useful as a ready-made crown, such as a primary crown, which can be reduced.

Description

Hybrid ceramic prosthesis {HYBRID CERAMIC PROSTHESIS}

The present invention relates to a hybrid ceramic prosthesis, which has color and light transmittance aesthetically similar to natural teeth, and minimizes the amount of tooth removal during treatment to reduce the burden of dental treatment with one day-one stop treatment, enabling rapid implantation. A hybrid ceramic prosthesis is provided.

In humans, blue-white baby teeth grow from around 6 to 8 months after birth. Generally, they occur in the order of central incisor, lateral incisor, first primary molar, canine, and second primary molar, and a total of 20 primary teeth emerge by 2-3 years old do. From around the age of 7, the first tooth is naturally extracted and replaced with the permanent tooth.

However, compared to permanent teeth, baby teeth have a wider contact surface and more space between teeth, so they are very vulnerable to caries. When permanent teeth grow, the existing baby teeth serve as a guide, so in the case of tooth decay, partial removal rather than extraction and replacement with a prosthesis, or in severe cases, a space maintainer is inserted after extraction to secure space for permanent teeth to come out. Artificial crowns that restore deleted primary teeth are called primary crowns, and ready-made crowns manufactured by size are mainly used.

Various primary crown products are used by material, but the most commonly used product is SSC (Stainless Steel Crown). Stainless steel is chemically stable, so there is little risk of corrosion or discoloration, and it is inexpensive, so it is the most demanded product in the market. am. However, it has a disadvantage in that it is aesthetically weak due to the color difference with the surrounding teeth and can be used limitedly only in the posterior teeth.

In addition, there are Resin Veneered SSC, which overlays composite resin on metal, and Composite Strip Crown, which is used by filling resin cement in a transparent polymer tube of a tooth model, but these also have limitations in terms of aesthetic or functional use.

Recently, white dental crowns using zirconia material, which is similar in color to teeth and has high strength, have been widely used to compensate for these aesthetic disadvantages. However, it has a disadvantage in that it shows an opaque appearance compared to existing teeth when light is shined due to low light transmittance, and because of its high strength, a large amount of tooth removal is required to stably apply, which can be a burden to young patients.

On the other hand, US Patent Registration No. 8,651,867 discloses a dental crown made of thermoplastic polymer material that can be installed quickly, can be easily removed or replaced, can be mass-produced, and can also be used as a crown for infants.

US Patent No. 8,651,867 (2014.02.18.)

An object of the present invention is to provide a hybrid ceramic prosthesis that can be rapidly implanted, which has a similar color and light transmittance to natural teeth, has esthetic properties, and enables a one-day-one-stop prosthetic procedure by minimizing the amount of tooth removal during treatment.

The present invention provides a hybrid ceramic prosthesis comprising a thermoplastic polymer matrix and ceramic particles dispersed within the matrix.

In the hybrid ceramic prosthesis according to one embodiment of the present invention, the thermoplastic polymer matrix is polyether ether ketone (PEEK), polyphenylsulfone (PPSU), polyamide-imide (PAI), It may include at least one selected from super engineering plastics composed of polyphenylene sulfide (PPS), polysulfone (PSU), and polyether sulfone (PES).

In the hybrid ceramic prosthesis according to a preferred embodiment of the present invention, the thermoplastic polymer matrix may include polyphenylsulfone (PPSU).

In the hybrid ceramic prosthesis according to a preferred embodiment of the present invention, the ceramic particles may be included in an amount of 3 to 50 parts by weight based on 100 parts by weight of the thermoplastic polymer matrix.

In the hybrid ceramic prosthesis according to a preferred embodiment of the present invention, the ceramic particles may be silicate-based glass ceramic particles, and specifically, the silicate-based glass ceramic particles may be lithium disilicate glass ceramic particles or barium silicate glass ceramic particles. .

The hybrid ceramic prosthesis according to an embodiment of the present invention may also include a white pigment, and in a specific example, the white pigment is titanium dioxide (TiO ₂ ), zinc oxide (ZnO), and zinc phosphate (Zn ₃ (PO ₄ ) ₂ ), and may include at least one selected from the group consisting of, and in a preferred embodiment, the white pigment may include titanium dioxide (TiO ₂ ).

In the hybrid ceramic prosthesis according to a preferred embodiment, the white pigment may be included in an amount of 0.05 to 1.0 parts by weight based on 100 parts by weight of the thermoplastic polymer matrix.

A hybrid ceramic prosthesis according to a preferred embodiment may be an injection molding product containing 3.0 to 50.0 parts by weight of barium silicate and 0.05 to 1.0 parts by weight of titanium dioxide (TiO ₂ ) based on 100 parts by weight of polyphenylsulfone (PPSU). there is.

According to a preferred embodiment of the present invention, the prosthesis may be a primary canal.

Particularly preferably, the prosthesis may be coupled to the prepared tooth by a snap-fit fastening method.

The hybrid ceramic prosthesis of the present invention has a color and light transmittance aesthetically similar to that of natural teeth, and has appropriate strength, thereby minimizing the amount of tooth removal during dental treatment, and restoring strength and deformation capable of withstanding the material deformation step. It reduces the burden of re-procedure due to the prosthesis falling off and can be applied relatively conveniently compared to existing materials By enabling one day-one stop prosthetic treatment, the burden of dental treatment can be reduced for patients, especially young patients who may have fear in the dental treatment environment.

Figure 1 is a photograph of the exterior of a specimen compounded with a PPSU polymer alone, a polymer mixed with ceramic particles, and a polymer mixed with ceramic particles and a white pigment.
FIG. 2 is a photograph (a) of a state in which a hybrid ceramic prosthesis injection-molded using a pellet manufactured in the form of (e) in the embodiment of FIG. 1 is combined with a tooth model (Snap-fit On) and a ceramic prosthesis from the tooth model Photograph of the state (Snap-fit off) after separating (b).
Figure 3 is a graph of hardness (Shore hardness) and wear resistance (wear resistance) measurement results of the injection-molded hybrid ceramic prosthesis.
Figure 4 is a schematic diagram of a device for measuring wear resistance.

Hereinafter, embodiments of the present invention will be described in detail so that those skilled in the art can easily understand and reproduce them. However, the following examples are provided to those skilled in the art to sufficiently understand the present invention, and may be modified in many different forms, and the scope of the present invention is not limited thereto.

As used herein, the singular form may include the plural form unless the context clearly indicates otherwise. Also, when used herein, "comprise" and/or "comprising" specifies the presence of the recited shapes, numbers, steps, operations, elements, elements, and/or groups thereof. and does not exclude the presence or addition of one or more other shapes, numbers, operations, elements, elements and/or groups.

Originally, ceramics have been used as dental restorative materials for a long time because of their excellent biocompatibility, good chemical durability and color stability, and similar transparency to natural teeth. However, ceramic blocks have a problem in that they are easily fractured due to their higher flexural strength and lower elasticity than natural teeth.

In other words, since the occlusal relationship in the oral cavity is affected not only by vertical load but also by lateral pressure, the process of repairing fractures of the prosthesis due to various intraoral kinematic situations, personal abnormal habits or eating habits is an essential process. Recently, the CAD/CAM system has appeared and the time required for clinical trials has decreased significantly, but it is still a burden to patients if they visit the dentist several times for reoperation, especially compared to adults, who may have a lot of fear of dental treatment. If children are the target, the burden will be great.

Therefore, an object of the present invention is to provide a prosthesis that can be quickly clinically performed on the spot without a separate cutting process by turning it into an off-the-shelf product in a standardized form rather than customized to the patient.

In this respect, the hybrid ceramic prosthesis according to the present invention may be a primary canal in particular.

In the present invention, the hybrid ceramic prosthesis applies a snap-fit fastening method to fundamentally achieve physical bonding between the prosthetic appliance and teeth, and additionally achieves strong bonding in parallel with chemical bonding between the prosthetic appliance and teeth, thereby eliminating the prosthesis. We want to reduce the burden of reoperation. If the snap-fit method is applied, it can be applied relatively conveniently compared to existing materials because it only needs to be inserted into the tooth during clinical practice.

Snap-fit coupling is a fastening method that can simply fasten two parts without additional components or fasteners. It is defined as a fastening method in which the prosthesis itself is physically combined with the teeth through the steps of deformation → fixation → restoration without any fasteners or fasteners.

In implementing the snap-fit fastening method, even a simple method of undercutting the side part where the prosthesis is fastened with the prepared tooth can realize the snap-fit fastening method with the tooth due to the strength and elastic properties of the prosthetic material. Of course you can.

In order to achieve a snap-fit connection, a material that has both strength to withstand the deformation stage of the part and elasticity to recover after deformation is essential. In general, when the strength of a material increases, its elasticity decreases and it tends to break or break due to a certain amount of stress, so a material that can satisfy both physical properties in a balanced manner is required.

In this aspect, the hybrid ceramic prosthesis of the present invention includes a thermoplastic polymer matrix and ceramic particles dispersed in the matrix.

Conventionally, photocurable urethane acrylate has been used as a dental restorative or prosthetic material, which has the advantage of photocurability to speed up treatment or prosthesis manufacturing and to satisfy physical properties as a tooth substitute, but urethane acrylate When applied to a snap-fit prosthesis with polymer, it is expected to have good strength, but problems such as poor elasticity and poor deformation response. Therefore, the polymer matrix of the present invention preferably comprises a thermoplastic polymer, particularly a super engineering plastic.

Super engineering plastic is a high-performance plastic that can replace metal. It has good strength and elasticity, and is a highly heat-resistant material that can be used permanently at temperatures ranging from 150℃ to 300℃ or higher depending on the usage environment. It also has excellent properties such as weight savings and chemical resistance.

In the hybrid ceramic prosthesis according to the present invention, the thermoplastic polymer matrix is such a super engineering plastic, more specifically, polyether ether ketone (PEEK), polyphenylsulfone (PPSU, polyphenylsulfone), polyamideimide (PAI, Polyamide-imide), polyphenylene sulfide (PPS), polysulfone (PSU, Polysulfone), or polyether sulfone (PES, Polyether sulfone).

Medical PEEK is a high-performance material that maintains excellent mechanical properties at high temperatures of 100 ° C or higher among polyether ether ketone (PEEK) materials, and has excellent resistance to general sterilization methods. That is, even if sterilization is performed for 1,500 cycles or more, the mechanical properties are not greatly deteriorated, and phenomena such as discoloration or discoloration (yellowing) and calcification are not observed.

In addition, it provides the highest safety in medical applications along with excellent chemical resistance, and is widely used in joint restoration, surgical instruments in traumatology and orthopedics, dental markets and other fields.

Therefore, when the polymer matrix of the hybrid ceramic prosthesis includes PEEK, the physical properties can be maintained even when heat treated at high temperature during the manufacturing process of the dental prosthesis, and the chemical resistance and biocompatibility are excellent, and it does not discolor or discolor, which is aesthetically pleasing. Excellent dental prostheses can be obtained.

On the other hand, polyphenylsulfone (PPSU) material is an amorphous plastic with a high glass transition temperature and low water absorption, and even in the polysulfone product family, it has higher impact strength than polysulfone (PSU, Polysulfone) or polyethersulfone (PES, Polyether sulfone). It has excellent chemical resistance and high modulus of elasticity. In addition, it is widely applied in the medical field because it has excellent resistance to high-temperature steam sterilization and detergents and disinfectants compared to other product groups, and is also widely used as a baby bottle material that requires high heat resistance and high durability.

Table 1 below shows the results that PPSU can be sterilized by all kinds of sterilization methods compared to other polysulfone products.

steam
(up to 134℃ for 18 minutes) ethylene oxide Hydrogen Perox Gamma Radiation 10 cycles 100 cycles 1,000 cycles 100 cycles 200 cycles 40 kGy PPSU ∨ ∨ ∨ ∨ ∨ ∨ PES ∨ X X ∨ ∨ ∨ PSU ∨ ∨ X ∨ ∨ ∨

* ∨ mark can be sterilized

Moreover, PPSU has been certified as a stable material in cytotoxicity, hypersensitivity reaction, dermal toxicity, acute systemic toxicity, etc., and is used in various applications such as joints, trauma and spine, as surgical tools, handles, knee, hip, shoulder replacement and tibial elements. In addition, it is a material whose biocompatibility has been verified, such as being mainly used for sterilization trays and test implants.

That is, since PPSU has high strength and elastic modulus, and is excellent in biocompatibility and high heat resistance, it may be most preferable as a polymer matrix material for the hybrid ceramic according to the present invention.

In particular, the PPSU polymer constituting the polymer matrix in the hybrid ceramic prosthesis of the present invention shows a light transmittance of at least 75% within a thickness of 2 mm based on the thickness of the film, and the haze is maximum, considering the aesthetic properties of the prosthesis. 5.1%, and it may be preferable that the yellowness index (Yellowness Index) satisfies within 28. In addition, the PPSU polymer has a tensile strength of 68 to 72 MPa, a tensile modulus of 2.0 to 2.4 GPa, a tensile elongation at break of 60 to 120%, and a flexural strength of 68 to 72 MPa, considering the mechanical properties of the prosthesis and its function as a snap-fit prosthesis. It may be desirable to satisfy strength of 88 to 95 MPa, and impact strength (Izod impact, notched) of 680 to 700 J/m.

According to the present invention, when a hybrid ceramic is manufactured using PEEK or PPSU material as described above as a base polymer, it is possible to manufacture a biocompatible dental prosthesis advantageous to snap-fit coupling by balancing elasticity and strength. In addition, the hybrid ceramic prosthesis of the present invention may include PAI, PPS, PSU, or PES as a polymer matrix, and these materials may be included alone or in the form of a mixture.

Meanwhile, the hybrid ceramic prosthesis according to the present invention may include ceramic particles dispersed in a polymer matrix, and it may be preferable that the ceramic particles include silicate-based glass ceramic particles. In particular, barium silicate glass ceramic particles or lithium silicate glass ceramic particles exhibit physical properties suitable as dental prosthetic materials and can be applied to permanent tooth prostheses. Among them, lithium disilicate glass ceramic particles have good light transmittance and are aesthetically pleasing It can be applied directly to the anterior area without the need to treat the tooth surface with a separate material. In addition, since the flexural strength is over 400 MPa, it can resist occlusal force in the posterior teeth, and acid corrosion by HF and silane treatment are possible to obtain strong bonding strength with polymers and less wear on opposing teeth.

As described above, the hybrid ceramic prosthesis including the thermoplastic polymer matrix and the ceramic particles has appropriate light transmittance that is not opaque compared to conventional teeth when exposed to light, and has a color similar to that of natural teeth.

According to the present invention, a hybrid ceramic prosthesis including a thermoplastic polymer matrix and ceramic particles dispersed in the matrix may have different mechanical properties or aesthetics depending on the type of the thermoplastic polymer matrix and/or the type of ceramic particles, as described above. In addition, the content of ceramic particles dispersed in the thermoplastic polymer matrix can have a significant effect on the expression of optimal physical properties for realizing snap-fit. Preferably, the ceramic particles may be included within 50 parts by weight, preferably 3 to 50 parts by weight, more preferably 10.0 to 40.0 parts by weight, based on 100 parts by weight of the thermoplastic polymer matrix.

The hybrid ceramic prosthesis according to the present invention has both the advantages of ceramics having excellent properties such as wear resistance, color reproducibility, and color stability, and the advantages of polymers such as strong bonding strength with resin cement and excellent processability.

In addition, the existing ceramic prosthesis has too high strength, so it is difficult for young patients to apply it stably because the amount of tooth removal in clinical practice increases and the treatment takes a long time. However, the hybrid ceramic prosthesis according to the present invention has appropriate strength and The amount of removal can be minimized, and the burden on the patient can be reduced because it can be quickly combined according to the snap-fit fastening method.

Meanwhile, the hybrid ceramic prosthesis according to the present invention may further include a white pigment to improve aesthetics.

When the white pigment is included, the amount thereof is preferably 0.05 to 1.0 parts by weight based on 100 parts by weight of the polymer matrix. For example, when the polymer matrix of the hybrid ceramic prosthesis is PPSU, since the color of the PPSU material is yellow, it may be desirable to appropriately mix a white pigment to produce a color similar to that of natural teeth.

Examples of the white pigment include titanium dioxide (TiO ₂ ), zinc oxide (ZnO), and zinc phosphate (Zn ₃ (PO ₄ ) ₂ ), but are not limited thereto.

Titanium dioxide (TiO ₂ ) is a representative white pigment and is an inorganic compound widely used in real life such as plastics, rubbers, and paints. It has the highest level of refractive index among white pigments and has accurate particle size and dispersibility, so it has excellent hiding power and coloring power, and is chemically and physically very stable.

Zinc oxide (ZnO) is a white pigment used as a sunscreen because it has high blocking power against ultraviolet rays. It has high heat capacity and thermal conductivity, so it is added to materials such as rubber and glass to increase durability against heat. It is also added to ceramics to make products resistant to heat and shock.

Zinc phosphate (Zn ₃ (PO ₄ ) ₂ ) is a white pigment that has good storage stability and can be applied to water-soluble and emulsion paints as well as enamel. In particular, zinc phosphate has been widely used as a dental cement, mainly for bonding inlays, crowns, and other oral appliances. Because it has a long lifespan, it can be used as a permanent adhesive, and it has a thermal conductivity similar to that of dentin, so it is widely used in clinical practice.

In addition, various pigments may be used, but are not limited thereto.

In order to facilitate the understanding of the present invention, specimens containing a thermoplastic matrix alone, specimens containing a thermoplastic polymer matrix and ceramic particles dispersed in the thermoplastic polymer matrix, and specimens further containing a white pigment were prepared, and color and transparency were visually inspected. As a result of checking, the photograph is shown in FIG. 1 .

The fabrication of the specimen was obtained by compounding and extruding considering the thermal characteristics of PPSU for each material.

In the case of FIG. 1 (a), a photograph of a sample made of only PPSU as a polymer material, it was confirmed that the original color of PPSU was strongly yellow.

On the other hand, in the case of FIG. 1 (b), a specimen made of PPSU and barium silicate is photographed without a white pigment, and the left side is a mixture of 5.0 parts by weight of barium silicate based on 100 parts by weight of PPSU, and the right side is a mixture of 10.0 parts by weight of barium silicate. As the content of barium silicate increased, it could be confirmed that the color became slightly lighter, but it was still difficult to see that it was close to the color of natural teeth.

1(c) is a photograph of a specimen prepared by mixing PPSU and titanium dioxide (TiO ₂ ) as a white pigment without mixing of ceramic materials, and the left side is a photograph of titanium dioxide (TiO ₂ ) with respect to 100 parts by weight of PPSU 0.3 parts by weight of mixture, the right side is a mixture of 0.5 parts by weight of titanium dioxide (TiO ₂ ).

Again, it was confirmed that as the pigment content increased, it became a little closer to white, but it was confirmed that the texture of the surface such as transparency was quite different from that of natural teeth by excluding ceramic materials.

Finally, FIG. 1 (d) is a photograph of samples in which PPSU, barium silicate, and titanium dioxide are all mixed. In the case of the left side, 5.0 parts by weight of barium silicate and 0.3 part by weight of TiO ₂ were mixed with respect to 100 parts by weight of PPSU. The obtained specimen, and the right side is a specimen obtained by mixing 10.0 parts by weight of barium silicate and 0.3 parts by weight of titanium dioxide (TiO ₂ ) with respect to 100 parts by weight of PPSU.

The left and right sides show slightly different colors, but natural teeth have various colors, so it was confirmed that the color and surface texture are suitable for all teeth application materials, and using this, as shown in FIG. 5.0 parts by weight of barium silicate and titanium dioxide (TiO ₂ ) based on 100 parts by weight of PPSU Pellets for injection molding containing 0.3 parts by weight could be prepared.

Meanwhile, the present invention may be processed into a final prosthesis shape through injection molding rather than CAD/CAM processing. In the case of CAD/CAM machining, many blocks were discarded because the block was cut into the required shape. However, when the final product is formed through injection molding as in the present invention, there is no separate cutting step, so there is no wasted material. In addition, since the post-processing step is minimized, it can be applied conveniently in the clinic and can improve the satisfaction of clinicians, patients, and guardians.

Since the present invention also aims to make a hybrid ceramic prosthesis into an off-the-shelf product and mass-produce it so that it can be quickly implanted without a separate process during dental treatment, an injection molding method is preferable.

At this time, injection molding is a manufacturing process for making a part by injecting a molten material into a mold. It is the most common way to mold and produce plastic products. Usually, thermoplastic resin is heated and melted, then pushed into a mold and cooled to process and produce plastic products. This injection molding method is preferable for mass production of ready-made products because it continues to produce products while automatically repeating the same operation.

However, of course, it is not excluded that the prosthesis is manufactured through mechanical processing, that is, processing into a block shape and then milling.

For the same reason as above, the final product of the hybrid ceramic prosthesis according to the present invention may be manufactured by 3D-printing.

In addition, when the hybrid ceramic according to the present invention is manufactured in a thermosetting type using polymeric oligomers or monomers generally used in dentistry, instead of a polymer matrix, it is possible to manufacture a prosthesis having precise fit through injection molding, In the case of manufacturing by fire molding, manufacturing advantages can be expected through a fast curing method, and it will be applicable to molding through 3D-Printing, which is in the spotlight recently.

FIG. 2 is a final prototype of a hybrid ceramic prosthesis manufactured by injection molding using the pellet manufactured in the form of FIG. 1(e), and then using the pellet manufactured in the form of (e) Photo (a) of the injection-molded hybrid ceramic prosthesis combined with the tooth model (Snap-fit On) and (b) after separating the ceramic prosthesis from the tooth model (Snap-fit off), which are mechanically stable. It was confirmed that the snap-fit operation was performed and that it had sufficient bonding strength.

On the other hand, in order to check the physical properties according to the content of ceramic particles in the hybrid ceramic prosthesis according to the present invention, the content of barium silicate ceramic particles was varied to 3, 15, and 25 parts by weight with respect to 100 parts by weight of PPSU, respectively, and compounded to obtain 3 A modified material was prepared, and specimens were prepared through injection molding, and shore hardness and wear resistance were evaluated as follows. Of course, all the materials include 0.3 parts by weight of TiO ₂ as a white pigment based on 100 parts by weight of PPSU. The results are shown in FIG. 3 .

(1) Shore hardness (durometer)

Shore hardness was measured at 5 random points for each specimen of the three compositions, and the hardness value was obtained as an average value of each specimen.

(2) Wear resistance

Using the device shown in the schematic diagram of FIG. 4, #1200 SiC sandpaper is placed as an abrasive on a rotating plate, a specimen (block-shaped body) is fixed so that it comes into contact with the abrasive, and a load of 250 g is applied on the specimen while rotating for 10 minutes. (Rotation speed of the rotating plate is 500 rpm) and the weight of the worn specimen was measured, and the wear resistance (%) was calculated therefrom. For each specimen of the three compositions according to the same evaluation method, a total of three specimens were prepared and the wear resistance was calculated, and the results of FIG. 3 are shown as the average value of these values.

As shown in the results of FIG. 3 , in the case of the hybrid ceramic prosthesis according to the present invention, it can be seen that the hardness value increases and the wear resistance increases as the content of the ceramic particles increases. However, if the content of ceramic particles becomes excessive, aesthetics may be impaired and it may be undesirable in realizing snap-fit characteristics, so it is preferable to include them within a maximum of 50 parts by weight based on 100 parts by weight of the polymer matrix. can do.

As described above, the configuration of the present invention and its unique effects have been described in detail through preferred embodiments, etc., and for those skilled in the art, these specific techniques are only preferred embodiments, and thereby the present invention It will be clear that the scope is not limiting. Accordingly, the substantial scope of the present invention will be defined by the appended claims and their equivalents.

Claims (14)

A hybrid ceramic prosthesis comprising a thermoplastic polymer matrix and ceramic particles dispersed within the matrix.
The method of claim 1, wherein the thermoplastic polymer matrix is polyether ether ketone (PEEK), polyphenylsulfone (PPSU, polyphenylsulfone), polyamide-imide (PAI), polyphenylene sulfide (PPS, Polyphenylene sulfide), polysulfone (PSU, Polysulfone) and polyethersulfone (PES, Polyether sulfone) characterized in that it comprises at least one selected from super engineering plastics, a hybrid ceramic prosthesis.
The hybrid ceramic prosthesis according to claim 1, wherein the thermoplastic polymer matrix comprises polyphenylsulfone (PPSU).
The hybrid ceramic prosthesis according to claim 1, wherein the ceramic particles are included in an amount of 3 to 50 parts by weight based on 100 parts by weight of the thermoplastic polymer matrix.
The hybrid ceramic prosthesis according to claim 1, wherein the ceramic particles include silicate-based glass ceramic particles.
[6] The hybrid ceramic prosthesis according to claim 5, wherein the silicate-based glass ceramic particles are lithium disilicate glass ceramic particles.
[6] The hybrid ceramic prosthesis according to claim 5, wherein the silicate-based glass ceramic particles are barium silicate glass ceramic particles.
The hybrid ceramic prosthesis according to claim 1 , characterized in that it comprises a white pigment.
The method of claim 8, wherein the white pigment comprises at least one selected from the group consisting of titanium dioxide (TiO ₂ ), zinc oxide (ZnO) and zinc phosphate (Zn ₃ (PO ₄ ) ₂ ). , hybrid ceramic prostheses.
The hybrid ceramic prosthesis according to claim 8, wherein the white pigment comprises titanium dioxide (TiO ₂ ).
The hybrid ceramic prosthesis according to claim 10, wherein the white pigment is included in an amount of 0.05 to 1.0 parts by weight based on 100 parts by weight of the thermoplastic polymer matrix.
According to claim 1, Polyphenylsulfone (PPSU, Polyphenylsulfone) 3.0 to 50.0 parts by weight of barium silicate based on 100 parts by weight, and titanium dioxide (TiO ₂ ) Characterized in that the injection molding comprising 0.05 to 1.0 parts by weight, hybrid, characterized in that ceramic prosthesis. The hybrid ceramic prosthesis according to claim 1, wherein the prosthesis is a primary crown.
The hybrid ceramic prosthesis according to claim 1, characterized in that the prosthesis is coupled to the prepared tooth by a snap-fit fastening method.

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