A denture glaze with excellent acid and alkali resistance and preparation method thereof

Abstract

The present invention discloses an acid- and alkali-resistant denture glaze and a preparation method thereof. The glaze comprises the following proportions: silicate: 40-60%; aluminum oxide: 10-20%; zirconium oxide: 15-25%; titanium oxide: 2-5%; magnesium oxide: 1-3%; calcium oxide: 3-5%; potassium oxide: 1-3%; and sodium oxide: 1-3%. The glaze can then be prepared and used by selecting, mixing, melting, cooling, crushing, screening, pulping, coating, and sintering. The present invention relates to the technical field of denture glazes, and the glaze, through its excellent proportioning and preparation method, has excellent acid- and alkali-resistant properties.

Description

Technical Field

[0001] The present invention relates to the technical field of denture glaze, in particular to a denture glaze with excellent acid and alkali resistance and a preparation method thereof. Background Art

[0002] Dentures are one of the important materials for oral restoration. Their main function is to replace missing natural teeth and restore the patient's chewing function and aesthetic appearance. However, during long-term use, dentures are often exposed to the complex oral environment, especially the erosion of acidic and alkaline foods and beverages, which can easily cause surface damage and corrosion. This not only affects the aesthetics and service life of the dentures, but may also lead to oral health problems. Therefore, improving the acid and alkali resistance of denture materials has become a focus of current research.

[0003] Traditional denture materials mainly include metal, resin and ceramic, each of which has its own advantages and disadvantages. Metal dentures have high mechanical strength and wear resistance, but they are prone to chemical reactions in the acidic and alkaline environment of the mouth, leading to corrosion and release of metal ions, which may cause oral discomfort or even allergic reactions. Resin dentures have good biocompatibility and aesthetics, but their wear resistance and chemical corrosion resistance are poor, and they are prone to aging and discoloration during use. Although ceramic dentures have excellent aesthetic effects and biocompatibility, they are relatively brittle and have poor impact resistance, and are prone to breakage during use.

[0004] In recent years, in order to improve the overall performance of dentures, researchers have begun to explore the application of glaze technology on the surface of dentures. Glaze is a material specially used for denture surface treatment. By coating the surface of dentures with a layer of glaze with excellent acid and alkali resistance, the corrosion resistance and aesthetics of dentures can be effectively improved. The application of glaze in dentures has the following advantages:

[0005] However, existing denture enamel materials still have some shortcomings during application, such as the acid and alkali resistance needs to be further improved, and the density and uniformity of the glaze layer need to be improved. In order to solve these problems, the present invention proposes a denture enamel with excellent acid and alkali resistance and a preparation method thereof. By optimizing the raw material ratio and improving the preparation process, the comprehensive performance of the denture enamel is significantly improved, providing a new technical approach for the development of denture materials. Summary of the Invention

[0006] In view of the above-mentioned deficiencies in the prior art, the present invention aims to provide a denture glaze with excellent acid and alkali resistance and a preparation method thereof.

[0007] The technical solution adopted by the present invention to achieve the above-mentioned object is: an acid and alkali resistant denture glaze, comprising the following raw material components in proportion by weight:

[0008] Silicate: 40-60%; Aluminum oxide: 10-20%; Zirconium oxide: 15-25%; Titanium oxide: 2-5%; Magnesium oxide: 1-3%; Calcium oxide: 3-5%; Potassium oxide: 1-3%; Sodium oxide: 1-3%.

[0009] In one embodiment, the acid- and alkali-resistant denture enamel comprises the following raw material components in proportion by weight:

[0010] Silicate: 50%; Aluminum oxide: 15%; Zirconium oxide: 20%; Titanium oxide: 3%; Magnesium oxide: 2%; Calcium oxide: 5%; Potassium oxide: 3%; Sodium oxide: 2%.

[0011] In one embodiment, the acid- and alkali-resistant denture enamel comprises the following raw material components in proportion by weight:

[0012] Silicate: 45%; Aluminum oxide: 18%; Zirconium oxide: 22%; Titanium oxide: 4%; Magnesium oxide: 3%; Calcium oxide: 4%; Potassium oxide: 2%; Sodium oxide: 2%.

[0013] In one embodiment, the acid- and alkali-resistant denture enamel comprises the following raw material components in proportion by weight:

[0014] Silicate: 55%; Aluminum oxide: 12%; Zirconium oxide: 18%; Titanium oxide: 5%; Magnesium oxide: 1%; Calcium oxide: 3%; Potassium oxide: 3%; Sodium oxide: 3%.

[0015] In one embodiment, the acid- and alkali-resistant denture enamel comprises the following raw material components in proportion by weight:

[0016] Silicate: 60%; Aluminum oxide: 10%; Zirconium oxide: 15%; Titanium oxide: 2%; Magnesium oxide: 2%; Calcium oxide: 4%; Potassium oxide: 3%; Sodium oxide: 4%.

[0017] The present invention also provides a method for preparing an acid- and alkali-resistant denture glaze, comprising the above-mentioned acid- and alkali-resistant denture glaze, comprising the following steps:

[0018] S1. Weigh the raw materials according to the following proportions:

[0019] Silicate: 40-60%; Aluminum oxide: 10-20%; Zirconia: 15-25%; Titanium oxide: 2-5%; Magnesium oxide: 1-3%; Calcium oxide: 3-5%; Potassium oxide: 1-3%; Sodium oxide: 1-3%;

[0020] S2, uniformly mixing the above raw materials;

[0021] S3. Place the mixed raw materials into a high-temperature furnace and melt them at 1400-1500°C to allow the raw materials to fully react to form a uniform glassy melt;

[0022] S4, quickly pouring the molten glass melt into a cooling medium and rapidly cooling it to form a glassy solid;

[0023] S5, crushing the cooled glassy solid to obtain a fine powder;

[0024] S6. Sieving the crushed powder to obtain glaze powder with a powder fineness of more than 200 mesh;

[0025] S7, mixing the obtained glaze powder with water to prepare a glazing slurry;

[0026] S8. Place the denture coated with glaze in a firing furnace at a firing temperature of 800-900° C. for 0.5-1 hour.

[0027] In one embodiment, the preparation of denture enamel comprises the following steps:

[0028] S1. Weigh the raw materials according to the following proportions:

[0029] Silicate: 50%; Aluminum oxide: 15%; Zirconium oxide: 20%; Titanium oxide: 3%; Magnesium oxide: 2%; Calcium oxide: 5%; Potassium oxide: 3%; Sodium oxide: 2%;

[0030] S2, the above raw materials are uniformly mixed using a ball mill;

[0031] S3. Place the mixed raw materials into a high-temperature furnace and melt them at 1450°C for 1.5 hours to allow the raw materials to fully react to form a uniform glassy melt;

[0032] S4, quickly pouring the molten glass melt into a metal mold and rapidly cooling it to form a glassy solid;

[0033] S5, crushing the cooled glassy solid to obtain a fine powder;

[0034] S6. Sieving the crushed powder to obtain glaze powder with a powder fineness of 200 mesh;

[0035] S7, mixing the obtained glaze powder with water to prepare a glazing slurry;

[0036] S8. Place the denture coated with glaze in a firing furnace at a firing temperature of 800° C. for 0.5 h.

[0037] In one embodiment, the preparation of denture enamel comprises the following steps:

[0038] S1. Weigh the raw materials according to the following proportions:

[0039] Silicate: 45%; Aluminum oxide: 18%; Zirconium oxide: 22%; Titanium oxide: 4%; Magnesium oxide: 3%; Calcium oxide: 4%; Potassium oxide: 2%; Sodium oxide: 2%;

[0040] S2, the above raw materials are uniformly mixed using a ball mill;

[0041] S3. Place the mixed raw materials into a high-temperature furnace and melt them at 1500°C for 1 hour to allow the raw materials to fully react and form a uniform glassy melt;

[0042] S4, quickly pouring the molten glass melt into a metal mold and rapidly cooling it to form a glassy solid;

[0043] S5, crushing the cooled glassy solid to obtain a fine powder;

[0044] S6. Sieving the crushed powder to obtain glaze powder with a powder fineness of 250 mesh;

[0045] S7, mixing the obtained glaze powder with water to prepare a glazing slurry;

[0046] S8. Place the denture coated with glaze in a firing furnace at a firing temperature of 850° C. for 1 hour.

[0047] In one embodiment, the preparation of denture enamel comprises the following steps:

[0048] S1. Weigh the raw materials according to the following proportions:

[0049] Silicate: 55%; Aluminum oxide: 12%; Zirconium oxide: 18%; Titanium oxide: 5%; Magnesium oxide: 1%; Calcium oxide: 3%; Potassium oxide: 3%; Sodium oxide: 3%;

[0050] S2, the above raw materials are uniformly mixed using a ball mill;

[0051] S3. Place the mixed raw materials into a high-temperature furnace and melt them at 1400°C for 2 hours to allow the raw materials to fully react and form a uniform glass melt;

[0052] S4, quickly pouring the molten glass melt into a metal mold and rapidly cooling it to form a glassy solid;

[0053] S5, crushing the cooled glassy solid to obtain a fine powder;

[0054] S6. Sieving the crushed powder to obtain glaze powder with a powder fineness of 300 mesh;

[0055] S7, mixing the obtained glaze powder with water to prepare a glazing slurry;

[0056] S8. Place the denture coated with glaze in a firing furnace at a firing temperature of 900° C. for 0.5 h.

[0057] In one embodiment, the preparation of denture enamel comprises the following steps:

[0058] S1. Weigh the raw materials according to the following proportions:

[0059] Silicate: 60%; Aluminum oxide: 10%; Zirconium oxide: 15%; Titanium oxide: 2%; Magnesium oxide: 2%; Calcium oxide: 4%; Potassium oxide: 3%; Sodium oxide: 4%;

[0060] S2, the above raw materials are uniformly mixed using a ball mill;

[0061] S3. Place the mixed raw materials into a high-temperature furnace and melt them at 1480°C for 1.5 hours to allow the raw materials to fully react and form a uniform glass melt;

[0062] S4, quickly pouring the molten glass melt into a metal mold and rapidly cooling it to form a glassy solid;

[0063] S5, crushing the cooled glassy solid to obtain a fine powder;

[0064] S6. Sieving the crushed powder to obtain glaze powder with a powder fineness of 250 mesh;

[0065] S7, mixing the obtained glaze powder with water to prepare a glazing slurry;

[0066] S8. Place the denture coated with glaze in a firing furnace at a firing temperature of 850° C. for 0.75 h.

[0067] Beneficial effects of the present invention:

[0068] 1. High chemical corrosion resistance: Silicate, alumina and zirconia materials are used. The glassy structure formed by these materials at high temperatures has strong chemical stability and can effectively resist corrosion in acidic and alkaline environments;

[0069] 2. Structural density: During the melting and firing process, the raw materials are treated at high temperatures to form a dense glaze structure, which reduces porosity and improves the acid and alkali resistance of the glaze layer;

[0070] 3. Composition optimization: The addition of titanium oxide, magnesium oxide, and calcium oxide not only increases the mechanical strength of the glaze layer, but also enhances its resistance to acid and alkali;

[0071] 4. High melting temperature: High melting temperature allows the components to fully react to form stable compounds, further improving acid and alkali resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0072] Figure 1 It is a structural schematic diagram of the present invention. DETAILED DESCRIPTION

[0073] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0074] Example 1

[0075] This embodiment provides an acid- and alkali-resistant denture enamel, which includes the following raw material components in proportion by weight:

[0076] Silicate: 40-60%; Aluminum oxide: 10-20%; Zirconia: 15-25%; Titanium oxide: 2-5%; Magnesium oxide: 1-3%; Calcium oxide: 3-5%; Potassium oxide: 1-3%; Sodium oxide: 1-3%;

[0077] Among them, silicate is the main component of glaze material, forming the basic skeleton of the material, improving the material's chemical corrosion resistance, forming a dense glassy structure, and enhancing the material's mechanical strength and wear resistance;

[0078] Alumina can enhance the hardness and wear resistance of the glaze layer and improve the mechanical strength of the material. Alumina can also increase the heat resistance and acid and alkali resistance of the material;

[0079] Zirconia is used to provide excellent wear resistance and impact resistance, enhance the strength and toughness of the material. Zirconia has good chemical stability, further improving the corrosion resistance of the material;

[0080] Titanium oxide improves the smoothness and aesthetics of the material and enhances the glossiness of the glaze. Titanium oxide also has antibacterial properties and can reduce the growth of bacteria in the mouth.

[0081] The application of magnesium oxide can improve the thermal expansion coefficient of the material, enhance the toughness of the material, and prevent the material from cracking during the firing process. Magnesium oxide can also improve the corrosion resistance of the material;

[0082] Furthermore, calcium oxide can enhance the mechanical strength and wear resistance of the material, increase the hardness of the material, and improve the sintering properties of the material and increase the density of the glaze layer.

[0083] In addition, the application of potassium oxide can lower the melting point of the material, promote the uniform melting of the glaze layer at high temperature, improve the uniformity and smoothness of the glaze layer, and potassium oxide also has a fluxing effect, enhancing the mechanical properties of the material;

[0084] Finally, sodium oxide is similar to potassium oxide. Sodium oxide can lower the melting point of the material, improve the melting properties of the glaze layer, and increase the transparency and gloss of the material. Sodium oxide can also improve the chemical stability of the material.

[0085] In summary, through the synergistic effect of the above components, acid- and alkali-resistant denture glaze materials have significant advantages in improving mechanical strength, chemical corrosion resistance, aesthetics and biocompatibility, thereby extending the service life of dentures and improving patients' oral health.

[0086] Example 2

[0087] See also Figure 1 This embodiment discloses a method for preparing an acid- and alkali-resistant denture enamel, which comprises the following steps:

[0088] S1. Weigh the raw materials according to the following proportions:

[0089] Silicate: 40-60%; Aluminum oxide: 10-20%; Zirconia: 15-25%; Titanium oxide: 2-5%; Magnesium oxide: 1-3%; Calcium oxide: 3-5%; Potassium oxide: 1-3%; Sodium oxide: 1-3%;

[0090] Among them, silicate is the main component, providing the basic acid resistance and chemical stability of the glaze;

[0091] Among them, alumina is used to improve the hardness and wear resistance of the glaze and enhance its resistance to chemical corrosion;

[0092] Among them, zirconium oxide is used to increase the mechanical strength and heat resistance of the glaze, significantly improving the acid and alkali resistance;

[0093] Among them, titanium oxide is used to improve the antioxidant properties of glaze and enhance its adaptability to acid and alkaline environments;

[0094] Among them, magnesium oxide is used to improve the fluidity and melting properties of the glaze and increase acid and alkali resistance;

[0095] Among them, calcium oxide is used to improve the mechanical strength and hardness of the glaze and enhance its corrosion resistance;

[0096] Among them, potassium oxide and sodium oxide are used to improve the fusibility and glass-forming ability of the glaze and improve the chemical corrosion resistance;

[0097] S2. Evenly mix the above raw materials to ensure uniform distribution of the components, avoid unstable performance caused by uneven components, and improve the consistency and reliability of the glaze;

[0098] S3. Place the mixed raw materials into a high-temperature furnace and melt them at 1400-1500° C. to allow the raw materials to fully react and form a uniform glass melt, that is, to allow the raw materials to fully react and form a uniform glass melt, thereby ensuring the density and chemical stability of the glaze, while also improving the mechanical strength and acid and alkali resistance of the glaze, reducing the porosity, and preventing the penetration of acid and alkali liquids;

[0099] S4. The molten glass melt is quickly poured into a cooling medium and rapidly cooled to form a glassy solid, thereby preventing crystal formation, ensuring that the glaze maintains a glassy structure, and improving the density and chemical corrosion resistance of the glaze;

[0100] S5. Grinding the cooled glassy solid to obtain a fine powder to increase the specific surface area of ​​the glaze and enhance its adhesion and uniformity during the coating process;

[0101] S6. Sieving the crushed powder to obtain glaze powder with a powder fineness of more than 200 meshes, thereby ensuring the uniformity and fineness of the glaze powder and improving the quality of the glaze coating and the surface finish;

[0102] S7, mixing the obtained glaze powder with water to prepare a glazing slurry, so as to facilitate the glaze to be evenly coated on the surface of the denture to ensure the uniformity and density of the glaze layer;

[0103] S8. Place the denture coated with glaze in a firing furnace with a firing temperature of 800-900℃ and a firing time of 0.5-1h. Temperature control ensures that the glaze is sintered at an appropriate temperature to form a dense and smooth glaze layer, thereby improving acid and alkali resistance and surface finish. Time control ensures that the glaze is fully solidified, avoiding glaze layer defects caused by over-firing or under-firing, and ensuring the mechanical strength and durability of the glaze layer.

[0104] Overall, through a rational raw material ratio and optimized preparation process, the acid and alkali resistance and mechanical strength of denture glazes have been significantly improved. Precise control of each step ensures the glaze's uniformity, density, and chemical stability, making it suitable for a variety of complex acid and alkali environments, providing excellent protection and a long service life for dentures.

[0105] Example 3

[0106] See also Figure 1 This embodiment discloses a method for preparing an acid- and alkali-resistant denture enamel, which comprises the following steps:

[0107] S1. Weigh the raw materials according to the following proportions:

[0108] Silicate: 50%; Aluminum oxide: 15%; Zirconium oxide: 20%; Titanium oxide: 3%; Magnesium oxide: 2%; Calcium oxide: 5%; Potassium oxide: 3%; Sodium oxide: 2%;

[0109] S2, the above raw materials are uniformly mixed using a ball mill;

[0110] S3. Place the mixed raw materials into a high-temperature furnace and melt them at 1450°C for 1.5 hours to allow the raw materials to fully react to form a uniform glassy melt;

[0111] S4, quickly pouring the molten glass melt into a metal mold and rapidly cooling it to form a glassy solid;

[0112] S5, crushing the cooled glassy solid to obtain a fine powder;

[0113] S6. Sieving the crushed powder to obtain glaze powder with a powder fineness of 200 mesh;

[0114] S7, mixing the obtained glaze powder with water to prepare a glazing slurry;

[0115] S8. Place the denture coated with glaze in a firing furnace at a firing temperature of 800° C. for 0.5 h.

[0116] Example 4

[0117] See also Figure 1 This embodiment discloses a method for preparing an acid- and alkali-resistant denture enamel, which comprises the following steps:

[0118] S1. Weigh the raw materials according to the following proportions:

[0119] Silicate: 45%; Aluminum oxide: 18%; Zirconium oxide: 22%; Titanium oxide: 4%; Magnesium oxide: 3%; Calcium oxide: 4%; Potassium oxide: 2%; Sodium oxide: 2%;

[0120] S2, the above raw materials are uniformly mixed using a ball mill;

[0121] S3. Place the mixed raw materials into a high-temperature furnace and melt them at 1500°C for 1 hour to allow the raw materials to fully react and form a uniform glassy melt;

[0122] S4, quickly pouring the molten glass melt into a metal mold and rapidly cooling it to form a glassy solid;

[0123] S5, crushing the cooled glassy solid to obtain a fine powder;

[0124] S6. Sieving the crushed powder to obtain glaze powder with a powder fineness of 250 mesh;

[0125] S7, mixing the obtained glaze powder with water to prepare a glazing slurry;

[0126] S8. Place the denture coated with glaze in a firing furnace at a firing temperature of 850° C. for 1 hour.

[0127] Example 5

[0128] See also Figure 1 This embodiment discloses a method for preparing an acid- and alkali-resistant denture enamel, which comprises the following steps:

[0129] S1. Weigh the raw materials according to the following proportions:

[0130] Silicate: 55%; Aluminum oxide: 12%; Zirconium oxide: 18%; Titanium oxide: 5%; Magnesium oxide: 1%; Calcium oxide: 3%; Potassium oxide: 3%; Sodium oxide: 3%;

[0131] S2, the above raw materials are uniformly mixed using a ball mill;

[0132] S3. Place the mixed raw materials into a high-temperature furnace and melt them at 1400°C for 2 hours to allow the raw materials to fully react and form a uniform glass melt;

[0133] S4, quickly pouring the molten glass melt into a metal mold and rapidly cooling it to form a glassy solid;

[0134] S5, crushing the cooled glassy solid to obtain a fine powder;

[0135] S6. Sieving the crushed powder to obtain glaze powder with a powder fineness of 300 mesh;

[0136] S7, mixing the obtained glaze powder with water to prepare a glazing slurry;

[0137] S8. Place the denture coated with glaze in a firing furnace at a firing temperature of 900° C. for 0.5 h.

[0138] Example 6

[0139] See also Figure 1 This embodiment discloses a method for preparing an acid- and alkali-resistant denture enamel, which comprises the following steps:

[0140] S1. Weigh the raw materials according to the following proportions:

[0141] Silicate: 60%; Aluminum oxide: 10%; Zirconium oxide: 15%; Titanium oxide: 2%; Magnesium oxide: 2%; Calcium oxide: 4%; Potassium oxide: 3%; Sodium oxide: 4%;

[0142] S2, the above raw materials are uniformly mixed using a ball mill;

[0143] S3. Place the mixed raw materials into a high-temperature furnace and melt them at 1480°C for 1.5 hours to allow the raw materials to fully react and form a uniform glass melt;

[0144] S4, quickly pouring the molten glass melt into a metal mold and rapidly cooling it to form a glassy solid;

[0145] S5, crushing the cooled glassy solid to obtain a fine powder;

[0146] S6. Sieving the crushed powder to obtain glaze powder with a powder fineness of 250 mesh;

[0147] S7, mixing the obtained glaze powder with water to prepare a glazing slurry;

[0148] S8. Place the denture coated with glaze in a firing furnace at a firing temperature of 850° C. for 0.75 h.

[0149] Comprehensive Example 3-Example 6, the comparison results are:

[0150]

[0151]

[0152] In summary, Example 5 performs best in terms of acid and alkali resistance and is suitable for applications requiring high acid and alkali resistance.

[0153] Example 4 also performs well in terms of chemical corrosion resistance and is suitable for applications in harsh environments;

[0154] Examples 3 and 6 have good comprehensive performance and are suitable for use in common acid and alkaline environments.

[0155] In general, the most suitable formula and process can be selected according to the specific application scenario to achieve the best acid and alkali resistance effect.

[0156] The dentures without enamel (Sample A) were compared with those coated with a conventional enamel (composed of silicon dioxide, aluminum oxide, sodium oxide, potassium oxide, etc.) (Sample B), and the dentures coated with the enamel of Example 3 (Sample C).

[0157] Comparison items A sample Sample B C sample Aesthetic performance 85％ 90％ 95％ Bending strength 60MPa 90MPa 120MPa Compressive strength 300MPa 500MPa 700MPa Wear volume <![CDATA[2.0mm 3 ]]> <![CDATA[1.0mm 3 ]]> <![CDATA[0.5mm 3 ]]> Acid and base tolerance Low medium Higher Coefficient of thermal expansion 12x10^-6 / ℃ 10x10^-6 / ℃ 8x10^-6 / ℃

[0158] In summary;

[0159] 1. Color matching:

[0160] Sample A: Dentures without enamel coating have poor color matching due to the lack of protective layer and color adjustment, and cannot be well coordinated with the color of natural teeth;

[0161] Sample B: After applying traditional enamel, the color match is improved, but there is still a certain gap with natural teeth;

[0162] Sample C: The high transparency and improved formula of the new method glaze make the color of the finished denture highly match the natural tooth, reaching an excellent level;

[0163] 2. Bending strength:

[0164] Sample A: The denture without enamel coating has the lowest bending strength and is easily damaged;

[0165] Sample B: After applying the traditional glaze, the bending strength was significantly improved;

[0166] Sample C: The new method glaze further improved the bending strength and significantly enhanced the durability of the denture;

[0167] 3. Compressive strength:

[0168] Sample A: Dentures without enamel coating have low compressive strength and insufficient ability to withstand pressure;

[0169] Sample B: After applying the traditional glaze, the compressive strength increased;

[0170] Sample C: The new method glaze achieves the highest compressive strength, ensuring the stability and durability of the denture during use;

[0171] 4. Wear volume:

[0172] Sample A: The denture without enamel coating has the largest wear volume and the worst wear resistance;

[0173] Sample B: After applying the traditional glaze, the wear resistance has been improved to a certain extent;

[0174] Sample C: The new method enamel has the smallest wear volume, the best wear resistance, and the longest denture service life;

[0175] 5. Acid and alkali tolerance:

[0176] Sample A: Dentures not coated with enamel have low chemical stability and are easily corroded by acid and alkali environments;

[0177] Sample B: Dentures coated with traditional enamel have medium chemical stability and can withstand general acid and alkaline environments;

[0178] Sample C: The new method glaze has the highest chemical stability and can effectively resist corrosion from various acid and alkaline environments in the oral cavity;

[0179] 6. Thermal expansion coefficient:

[0180] Sample A: The denture without enamel has the largest thermal expansion coefficient and is prone to stress when the temperature changes;

[0181] Sample B: After applying the traditional glaze, the thermal expansion coefficient was reduced, and the dimensional change of the denture when the temperature changed was reduced;

[0182] Sample C: The glaze paste produced by the new method has the lowest thermal expansion coefficient, and the denture maintains the best dimensional stability when the temperature changes;

[0183] Therefore, sample C, the denture coated with the new glaze, is superior to samples A and B in all performance indicators, especially in aesthetic performance, mechanical strength, wear resistance, biocompatibility and chemical stability, and is very suitable as a high-performance denture material.

[0184] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0185] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An acid and alkali resistant denture enamel, characterized in that: The invention comprises the following raw material components in proportion by weight: Silicate: 40-60%; Alumina: 10-20%; Zirconia: 15-25%; Titanium oxide: 2-5%; Magnesium oxide: 1-3%; Calcium oxide: 3-5%; Potassium oxide: 1-3%; Sodium oxide: 1-3%.

2. The acid- and alkali-resistant denture enamel according to claim 1, characterized in that: The invention comprises the following raw material components in proportion by weight: Silicate: 50%; Alumina: 15%; Zirconia: 20%; Titanium oxide: 3%; Magnesium oxide: 2%; Calcium oxide: 5%; Potassium oxide: 3%; Sodium oxide: 2%.

3. The acid- and alkali-resistant denture enamel according to claim 1, characterized in that: The invention comprises the following raw material components in proportion by weight: Silicate: 45%; Aluminum oxide: 18%; Zirconium oxide: 22%; Titanium oxide: 4%; Magnesium oxide: 3%; Calcium oxide: 4%; Potassium oxide: 2%; Sodium oxide: 2%.

4. The acid- and alkali-resistant denture enamel according to claim 1, characterized in that: The invention comprises the following raw material components in proportion by weight: Silicate: 55%; Alumina: 12%; Zirconia: 18%; Titanium oxide: 5%; Magnesium oxide: 1%; calcium oxide: 3%; potassium oxide: 3%; sodium oxide: 3%.

5. The acid- and alkali-resistant denture enamel according to claim 1, characterized in that: The invention comprises the following raw material components in proportion by weight: Silicate: 60%; Aluminum oxide: 10%; Zirconium oxide: 15%; Titanium oxide: 2%; Magnesium oxide: 2%; Calcium oxide: 4%; Potassium oxide: 3%; Sodium oxide: 4%.

6. A method for preparing an acid- and alkali-resistant denture glaze, comprising the acid- and alkali-resistant denture glaze according to claim 1, wherein: The steps include: S1. Weigh the raw materials according to the following proportions: Silicate: 40-60%; Alumina: 10-20%; Zirconia: 15-25%; Titanium oxide: 2-5%; Magnesium oxide: 1-3%; Calcium oxide: 3-5%; Potassium oxide: 1-3%; Sodium oxide: 1-3%; S2, uniformly mixing the above raw materials; S3. Place the mixed raw materials into a high-temperature furnace and melt them at 1400-1500°C to allow the raw materials to fully react to form a uniform glassy melt; S4, quickly pouring the molten glass melt into a cooling medium and rapidly cooling it to form a glassy solid; S5, crushing the cooled glassy solid to obtain a fine powder; S6. Sieving the crushed powder to obtain glaze powder with a powder fineness of more than 200 mesh; S7, mixing the obtained glaze powder with water to prepare a glazing slurry; S8. Place the denture coated with glaze in a firing furnace at a firing temperature of 800-900° C. for 0.5-1 hour.

7. The method for preparing an acid- and alkali-resistant denture enamel according to claim 6, characterized in that: The steps include: S1. Weigh the raw materials according to the following proportions: Silicate: 50%; Alumina: 15%; Zirconia: 20%; Titanium oxide: 3%; Magnesium oxide: 2%; Calcium oxide: 5%; Potassium oxide: 3%; Sodium oxide: 2%; S2, the above raw materials are uniformly mixed using a ball mill; S3. Place the mixed raw materials into a high-temperature furnace and melt them at 1450°C for 1.5 hours to allow the raw materials to fully react to form a uniform glassy melt; S4, quickly pouring the molten glass melt into a metal mold and rapidly cooling it to form a glassy solid; S5, crushing the cooled glassy solid to obtain a fine powder; S6. Sieving the crushed powder to obtain glaze powder with a powder fineness of 200 mesh; S7, mixing the obtained glaze powder with water to prepare a glazing slurry; S8. Place the denture coated with glaze in a firing furnace at a firing temperature of 800° C. for 0.5 h.

8. The method for preparing an acid- and alkali-resistant denture enamel according to claim 6, characterized in that: The steps include: S1. Weigh the raw materials according to the following proportions: Silicate: 45%; Alumina: 18%; Zirconium oxide: 22%; Titanium oxide: 4%; Magnesium oxide: 3%; Calcium oxide: 4%; Potassium oxide: 2%; Sodium oxide: 2%; S2, the above raw materials are uniformly mixed using a ball mill; S3. Place the mixed raw materials into a high-temperature furnace and melt them at 1500°C for 1 hour to allow the raw materials to fully react and form a uniform glassy melt; S4, quickly pouring the molten glass melt into a metal mold and rapidly cooling it to form a glassy solid; S5, crushing the cooled glassy solid to obtain a fine powder; S6. Sieving the crushed powder to obtain glaze powder with a powder fineness of 250 mesh; S7, mixing the obtained glaze powder with water to prepare a glazing slurry; S8. Place the denture coated with glaze in a firing furnace at a firing temperature of 850° C. for 1 hour.

9. The method for preparing an acid- and alkali-resistant denture enamel according to claim 6, wherein: The steps include: S1. Weigh the raw materials according to the following proportions: Silicate: 55%; Alumina: 12%; Zirconia: 18%; Titanium oxide: 5%; Magnesium oxide: 1%; calcium oxide: 3%; Potassium oxide: 3%; Sodium oxide: 3%; S2, the above raw materials are uniformly mixed using a ball mill; S3. Place the mixed raw materials into a high-temperature furnace and melt them at 1400°C for 2 hours to allow the raw materials to fully react and form a uniform glass melt; S4, quickly pouring the molten glass melt into a metal mold and rapidly cooling it to form a glassy solid; S5, crushing the cooled glassy solid to obtain a fine powder; S6. Sieving the crushed powder to obtain glaze powder with a powder fineness of 300 mesh; S7, mixing the obtained glaze powder with water to prepare a glazing slurry; S8. Place the denture coated with glaze in a firing furnace at a firing temperature of 900° C. for 0.5 h.

10. The method for preparing an acid- and alkali-resistant denture enamel according to claim 6, characterized in that: The steps include: S1. Weigh the raw materials according to the following proportions: Silicate: 60%; Alumina: 10%; Zirconia: 15%; Titanium oxide: 2%; Magnesium oxide: 2%; Calcium oxide: 4%; Potassium oxide: 3%; Sodium oxide: 4%; S2, the above raw materials are uniformly mixed using a ball mill; S3. Place the mixed raw materials into a high-temperature furnace and melt them at 1480°C for 1.5 hours to allow the raw materials to fully react and form a uniform glass melt; S4, quickly pouring the molten glass melt into a metal mold and rapidly cooling it to form a glassy solid; S5, crushing the cooled glassy solid to obtain a fine powder; S6. Sieving the crushed powder to obtain glaze powder with a powder fineness of 250 mesh; S7, mixing the obtained glaze powder with water to prepare a glazing slurry; S8. Place the denture coated with glaze in a firing furnace at a firing temperature of 850° C. for 0.75 h.

Images