A dental silicone rubber bite recording material

Abstract

The invention relates to a dental silicone rubber bite recording material, comprising vinyl silicone oil, silicone resin, dispersant, first reinforcing filler, hydrogen-containing silicone oil, inhibitor, auxiliary agent, and platinum catalyst; the first reinforcing filler is a flaky powder; the flaky powder is selected from one or two of mica powder, talcum powder, and graphite; based on the total weight of the dental silicone rubber bite recording material, the content of the flaky powder is 5-25wt%. The dental silicone rubber bite recording material of the invention comprises a vinyl organopolysiloxane with a special group and a two-component room temperature vulcanized silicone rubber with a special powder, the special groups can enhance the hardness, mechanical strength, and heat resistance stability of the material, and the addition of a large-particle-size flaky structure and a powder with a spherical surface further improves the hardness of the silicone rubber bite recording, and at the same time, improves the processing performance of the bite recording material and the flowability of the material.

Description

Technical Field

[0001] The invention relates to a dental material, in particular to a dental silicone rubber occlusal recording material. Background Art

[0002] An impression is a negative mold used to record or reproduce the shape of an object. The material used to make an impression is called an impression material. In clinical oral medicine, dental impression materials not only play an important role in accurately replicating oral tissue and making models, but also need to record the matching of the occlusal process. The occlusal recording material needs to have sufficient hardness, detail reproducibility and dimensional stability, and have a suitable and sufficient operating time and solidification time.

[0003] In dental medicine and dental technology, properties with high final hardness and low elastic deformability are used for fixation, positioning, restoration, transfer, reinstallation and bite registration. Especially in bite registration, where the positional relationship of the two jaws relative to each other must be precisely fixed in the bite material, the final hardness of the material is essential for its good machinability with cutting and polishing materials, and the low elasticity guarantees good dimensional stability. In addition to the foregoing, these materials must show a minimum percentage shrinkage during the curing process to ensure accurate reproduction of the jaw relationship. In addition, the material must show a minimum setting time to avoid deviations due to relative movements of the jaws in the patient's mouth. On the other hand, the processing time must be at least 15 to 30 seconds in order to allow the dentist to apply the material to the occlusal surface of the mandible.

[0004] Existing dental bite record materials have the following problems:

[0005] 1) The hardness is low. The hardness of ordinary silicone rubber is 10-20 Shore D hardness. After adding powder, the hardness does not exceed 30; it cannot meet the occlusal record of the occlusal stress-bearing parts;

[0006] 2) The dimensional stability is relatively poor. The bite record needs to be polished and trimmed. General rubber materials cannot meet the requirements of precise polishing and trimming. When using high-speed polishing equipment for precise polishing, it is easy to destroy its own dimensional accuracy;

[0007] 3) The fluidity is general. If too much powder is added to the superhard silicone rubber material, the fluidity of the liquid silicone rubber cannot be guaranteed. Summary of the invention

[0008] The present invention aims to solve at least one of the problems of the prior art.

[0009] The present invention unexpectedly discovered that flaky powders, especially one or two of mica powder, talc powder and graphite, can significantly increase the hardness of dental silicone rubber bite registration materials.

[0010] The invention provides a dental silicone rubber bite recording material, comprising: vinyl silicone oil, silicone resin, dispersant, a first reinforcing filler, hydrogen-containing silicone oil, inhibitor, auxiliary agent, and platinum catalyst; wherein the first reinforcing filler is a flaky powder; the flaky powder is selected from one or two of mica powder, talcum powder, and graphite; and the content of the flaky powder is 5-25wt% based on the total weight of the dental silicone rubber bite recording material.

[0011] In some embodiments of the present invention, the content of the flaky powder is 10-20 wt %, based on the total weight of the dental silicone rubber bite registration material.

[0012] In some embodiments of the present invention, based on the total weight of the dental silicone rubber bite recording material, the content of the flaky powder is 5wt%, 6wt%, 7wt%, 8wt%, 9wt%, 10wt%, 11wt%, 12wt%, 13wt%, 14wt%, 15wt%, 16wt%, 17wt%, 18wt%, 19wt%, or 20wt%.

[0013] In some embodiments of the present invention, based on the total weight of the dental silicone rubber bite registration material, the material contains 8-9 wt % of mica powder and 2-11 wt % of talc powder.

[0014] As a preferred embodiment of the present invention, the dental silicone rubber bite recording material further comprises modified vinyl silicone oil. Studies have shown that the combined effect of the flaky powder and modified vinyl silicone oil can further increase the hardness of the dental silicone rubber bite recording material and significantly reduce the roughness.

[0015] In some embodiments of the present invention, based on the total weight of the dental silicone rubber bite registration material, the content of the modified vinyl silicone oil is 0-20wt%, for example greater than 0 and less than or equal to 20wt%, preferably 10-20wt%.

[0016] In some specific embodiments, based on the total weight of the dental silicone rubber bite recording material, the content of the modified vinyl silicone oil is 0.5wt%, 1wt%, 2wt%, 3wt%, 4wt%, 5wt%, 6wt%, 7wt%, 8wt%, 9wt%, 10wt%, 11wt%, 12wt%, 13wt%, 14wt%, 15wt%, 16wt%, 17wt%, 18wt%, 19wt%, or 20wt%.

[0017] In some embodiments of the present invention, the dental silicone rubber bite registration material is composed or made of raw materials including vinyl silicone oil, silicone resin, dispersant, reinforcing filler, hydrogen-containing silicone oil, inhibitor, auxiliary agent, platinum catalyst, and preferably also modified vinyl silicone oil. Specifically, the general method in the art can be used, and the present invention is not particularly limited.

[0018] As a preferred embodiment of the present invention, the dental silicone rubber bite recording material contains the following components or is made of the following components as raw materials, based on the total weight of the dental silicone rubber bite recording material:

[0019] Vinyl silicone oil 0-30wt%, or greater than 0 and less than or equal to 30wt%, for example 10-15wt%;

[0020] Modified vinyl silicone oil 0-20wt%, or greater than 0 and less than or equal to 20wt%, for example 10-20wt%;

[0021] Silicone resin 0-20wt%, or greater than 0 and less than or equal to 20wt%, for example 5-15wt%;

[0022] Dispersant 0-10wt%, or greater than 0 and less than or equal to 10wt%, for example 0.1-3.5wt%;

[0023] First reinforcing filler 5-25wt%, for example 10-20wt%;

[0024] The second reinforcing filler 5-60wt%, for example 20-40wt%;

[0025] 0.5-10wt% of hydrogen-containing silicone oil, for example 0.5-6wt%;

[0026] Inhibitor 0-2.5wt%, or greater than 0, less than or equal to 2.5wt%, such as 0.1-0.5wt%;

[0027] The additive is 0-5wt%, or greater than 0 and less than or equal to 5wt%, for example, 0.1-1wt%;

[0028] Platinum catalyst 0.01-10wt%, for example 2-5wt%.

[0029] In some embodiments of the present invention, in the dental silicone rubber bite registration material, the vinyl silicone oil, modified vinyl silicone oil and silicone resin are not zero at the same time.

[0030] In some embodiments of the present invention, the dental silicone rubber bite registration material is composed or made of components or raw materials including a matrix and a catalyst system, wherein:

[0031] The matrix includes: vinyl silicone oil, modified vinyl silicone oil, silicone resin, dispersant, reinforcing filler, hydrogen-containing silicone oil, inhibitor, and auxiliary agent;

[0032] The catalyst system comprises: vinyl silicone oil, modified vinyl silicone oil, silicone resin, dispersant, reinforcing filler, auxiliary agent, and platinum catalyst.

[0033] In some embodiments of the present invention, the matrix contains, based on the total weight of the matrix:

[0034] Vinyl silicone oil 0-30wt%, or greater than 0 and less than or equal to 30wt%, for example 10-15wt%;

[0035] Modified vinyl silicone oil 0-20wt%, or greater than 0 and less than or equal to 20wt%, for example 10-20wt%;

[0036] Silicone resin 0-20wt%, or greater than 0 and less than or equal to 20wt%, for example 5-15wt%;

[0037] Dispersant 0-10wt%, or greater than 0 and less than or equal to 10wt%, for example 0.1-3.5wt%;

[0038] First reinforcing filler 5-25wt%, for example 10-20wt%;

[0039] The second reinforcing filler 5-60wt%, for example 20-40wt%;

[0040] 1-20wt% of hydrogen-containing silicone oil, for example 1-12wt%;

[0041] Inhibitor 0-5wt%, or greater than 0, less than or equal to 5wt%, such as 0.2-1wt%;

[0042] The additive is 0-5wt%, or greater than 0 and less than or equal to 5wt%, for example, 0.1-1wt%.

[0043] In some embodiments of the present invention, the catalyst system comprises, based on the total weight of the catalyst system:

[0044] Vinyl silicone oil 0-30wt%, or greater than 0 and less than or equal to 30wt%, for example 10-15wt%;

[0045] Modified vinyl silicone oil 0-20wt%, or greater than 0 and less than or equal to 20wt%, for example 10-20wt%;

[0046] Silicone resin 0-20wt%, or greater than 0 and less than or equal to 20wt%, for example 5-15wt%;

[0047] Dispersant 0-10wt%, or greater than 0 and less than or equal to 10wt%, for example 0.1-3.5wt%;

[0048] First reinforcing filler 5-25wt%, for example 10-20wt%;

[0049] The second reinforcing filler 5-60wt%, for example 20-40wt%;

[0050] The additive is 0-5wt%, or greater than 0 and less than or equal to 5wt%, for example, 0.1-1wt%;

[0051] Platinum catalyst 0.01-10wt%, for example 2-10wt%.

[0052] In some embodiments of the present invention, the matrix and the catalyst system are mixed and kneaded in a certain ratio, such as a weight ratio of (2-1):(1-2), specifically 1:1, to obtain a dental silicone rubber bite recording material.

[0053] In some embodiments of the present invention, the dental silicone rubber bite recording material contains a vinyl organopolysiloxane with special groups and a two-component room temperature vulcanized silicone rubber with special powders. These special groups can enhance the hardness, mechanical strength, and heat resistance stability of the material. At the same time, the addition of large-particle flake structures and powders with spherical surfaces further improves the hardness of the silicone rubber bite recording material and improves the processing performance of the bite recording material and the flowability of the material.

[0054] In some embodiments of the present invention, the vinyl silicone oil is selected from one or more of methyl vinyl siloxane, poly-terminated vinyl polydimethyl siloxane (as shown in Formula I), and side-chain vinyl polydimethyl siloxane (as shown in Formula II).

[0055] In some embodiments of the present invention, vinyl silicone oils with different viscosities and vinyl contents may be selected as needed.

[0056] In some embodiments of the present invention, the viscosity of the vinyl silicone oil is 10mPa.s-100000mPa.s, preferably 50-500mPa.s with a lower viscosity. Studies have shown that the use of the vinyl silicone oil with a lower viscosity allows for the addition of more powder.

[0057] In some embodiments of the present invention, the vinyl content of the vinyl silicone oil is 0.0005 mol / mg-1 mol / mg.

[0058]

[0059] In formula I, n is 1-100 (natural number).

[0060]

[0061] In formula II, n is 1-50 (natural number), and m is 1-50 (natural number).

[0062] In some embodiments of the present invention, the modified vinyl silicone oil is selected from one or more of a low molecular chain siloxane whose side chain is substituted by a benzene ring group (as shown in Formula III), a low molecular chain siloxane whose silicon side chain is substituted by two benzene ring groups (as shown in Formula IV), a high molecular weight siloxane whose methyl group is replaced by a benzene ring group on the siloxane segment (as shown in Formula V), and a high molecular weight siloxane whose methyl group in each siloxane segment is replaced by a benzene ring (as shown in Formula VI).

[0063]

[0064] In formula V, n is 1-50 (natural number), and m is 1-50 (natural number).

[0065]

[0066] In formula VI, n is 1-50 (natural number).

[0067] In some embodiments of the present invention, the silicone resin adopts MQ resin; when all R are methyl, it is called methyl MQ silicone resin or MQ silicone resin for short; when part of R is H, it is called methyl hydrogenated MQ silicone resin; there are also methyl phenyl MQ silicone resin, vinyl MQ silicone resin, phenyl MQ silicone resin, fluorine-containing MQ silicone resin, MDQ, MTQ silicone resin, etc. In some embodiments of the present invention, the silicone resin is selected from one or more of methyl vinyl MQ silicone resin and vinyl MQ silicone resin. The performance and application range of MQ silicone resin mainly depend on its synthesis process conditions and the type and number of organic groups in the molecule, that is, the ratio of the number of M segments to Q segments; the organic group R mainly increases the compatibility with other components to play a viscosity-increasing role, and the SiO4 / 2 segment mainly improves the strength of the composite material to play a reinforcing role.

[0068] In some embodiments of the present invention, the dispersant is mainly a nonionic surfactant, which can be one or more of a polyether dispersant, a stearic acid dispersant, trioctylphosphine oxide, a dicarboxylic acid modifier, a silane coupling agent, and a polyether-modified siloxane.

[0069] In some embodiments of the present invention, the dispersant is selected from one or more of stearic acid, polyether-modified silicone and polyether emulsifiers.

[0070] In some embodiments of the present invention, the flaky powder is selected from one or two of mica powder, talc powder, and graphite.

[0071] In some embodiments of the present invention, the thickness of the flaky powder is 10nm-10um; the maximum size of the flaky powder is 1um-100um. The surface of the flaky powder can be surface treated or untreated, preferably treated powder, which is mainly treated with siloxane, and the treatment amount is controlled to be 1%-3%.

[0072] In some embodiments of the present invention, the flaky powder is preferably talcum powder, the powder thickness is 20nm-50nm, the powder flake diameter is 10-50um, and the powder is silanized using polydimethylsiloxane.

[0073] In the present invention, the second reinforcing filler does not include mica powder, talc powder, and graphite.

[0074] In some embodiments of the present invention, the second reinforcing filler is selected from one or more of inorganic powder, fiber powder, hollow yarn powder and spherical powder.

[0075] In some embodiments of the present invention, the inorganic powder may be one or more combinations of fumed silicon oxide, quartz glass powder, diatomaceous earth, calcium carbonate, and / or kaolin; the particle size of the powder ranges from 0.01 μm to 100 μm.

[0076] In some embodiments of the present invention, the fiber powder can be one or a combination of carbon fiber, glass fiber, quartz fiber, siliceous fiber, ceramic fiber and polymer fiber; the diameter of a single fiber of the fiber powder ranges from 0.1 to 25 μm, and the length of the fiber powder ranges from 2 to 50 μm.

[0077] In some embodiments of the present invention, the hollow yarn powder is a powder obtained by crushing quartz hollow yarn, the diameter of the quartz hollow yarn ranges from 1 to 20 μm, the hollowness is ≥ 20%, the hollow rate is ≥ 80%, and the length of the hollow yarn powder ranges from 2 to 50 μm.

[0078] In some embodiments of the present invention, the spherical powder is selected from one or more of spherical silica powder, glass fraction, ceramic powder, spherical alumina powder and the like, the powder particle size (D50) is 1um-100um, the surface of the spherical powder does not need to be treated, and spherical powder of 1-10um is preferred.

[0079] In some embodiments of the present invention, the hydrogen-containing silicone oil is selected from hydrogen-containing silicone oil, modified hydrogen-containing silicone oil, or MQ hydrogen-containing silicone oil. Generally, the hydrogen-containing silicone oil is characterized by: the main chain is polydimethylsiloxane, and there are hydrogen-containing reactive groups at the chain end or chain side.

[0080] In some embodiments of the present invention, the modified hydrogen-containing silicone oil has a benzene ring group replacing the methyl group on the siloxane segment, which can be unilaterally substituted or bilaterally substituted, preferably unilaterally substituted. For details, see Formula VII.

[0081]

[0082] In Formula VII, n is 1-50 (natural number).

[0083] In some embodiments of the present invention, the inhibitor is selected from one or more of polyvinylmethylsiloxane, 3-(trimethylsilyl)propynol, 1-ethynyl-1-cyclohexanol, 1-ethynylcyclohexanol and 2-methyl-butynol.

[0084] In some embodiments of the present invention, the auxiliary agent is a polydimethylsiloxane (without reactive groups) having a benzene ring in the side chain, as shown in Formula VIII.

[0085] In some embodiments of the present invention, the viscosity of the additive is 100 mPa.s-100000 mPa.s.

[0086]

[0087] In Formula VIII, n is 1-50 (natural number), and m is 1-50 (natural number).

[0088] In some embodiments of the present invention, the platinum catalyst is selected from one or both of 1,3-divinyl-1,1,3,3-tetramethyldisiloxane platinum (Karstedt catalyst) and platinum vinyl complex (chloroplatinic acid).

[0089] The present invention also provides a method for preparing the dental silicone rubber bite recording material, comprising:

[0090] providing the substrate and the catalyst system;

[0091] The substrate and the catalyst system are mixed and kneaded.

[0092] The substrate and the catalyst system can be mixed separately by a kneading device, the kneading speed of the device can be selected to be 5-20 rpm, and the mixing time can be selected to be 0.5-2 h.

[0093] The invention also provides application of the dental silicone rubber bite recording material in preparing dental impressions.

[0094] The invention also provides a dental impression, which is made of the dental silicone rubber occlusal recording material.

[0095] The dental silicone rubber bite recording material of the present invention contains a special reinforcing monomer, the main chain structure of the monomer is vinyl siloxane, and the chain segment contains a benzene ring group, an amino group and other special groups that can improve the hardness of the system after curing; the dental silicone rubber bite recording material contains a special reinforcing powder design, and a combination of adding flaky powders and the like can greatly improve the flow properties of the two components. The dental silicone rubber bite recording material of the present invention improves the hardness of the bite recording, improves the processing performance, and has a certain fluidity. BRIEF DESCRIPTION OF THE DRAWINGS

[0096] Figure 1 This is a scanning electron microscope photograph of the filler of the dental silicone rubber bite registration material of Example 2 after calcination. DETAILED DESCRIPTION

[0097] The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention. If no specific techniques or conditions are specified in the examples, the techniques or conditions described in the literature in the art or the product instructions are used. If the manufacturer of the reagents or instruments used is not specified, they are all conventional products that can be purchased through regular channels.

[0098] The following vinyl-terminated polydimethylsiloxane A is a compound of formula I, n=60,

[0099]

[0100] The following side chain vinyl polydimethylsiloxane B is a compound of formula II, n=30, m=30,

[0101]

[0102] The following modified vinyl silicone oil C is a compound of formula V, n=10, m=30,

[0103]

[0104] The following modified vinyl silicone oil F is a compound of formula VI, n=40,

[0105]

[0106] The following auxiliary agent is a compound of formula VIII, n=30, m=30,

[0107]

[0108] The raw material formulas of the dental silicone rubber bite registration materials of Examples 1-5 and Comparative Examples 1-2 are shown in Tables 1 and 2 below (wt %).

[0109] The raw materials were weighed according to the components in Table 1 and Table 2, and the matrix and catalyst system of the dental silicone rubber bite recording material were prepared by a kneader. The kneader was mixed for 2 hours, and then vacuum degassed to prepare the matrix and catalyst system for use. The matrix component and the catalyst system component were blended in a weight ratio of 1:1 to prepare the dental silicone rubber bite recording material.

[0110]

[0111]

[0112]

[0113] Experimental example

[0114] (I) Performance characterization of dental silicone rubber bite registration materials

[0115] The performance of the samples was tested according to "YY 0493-2011 Dental Elastomer Impression Materials". The hardness of the samples was tested according to "GB / T2411-2008 Plastic Shore Hardness Test Method". The tear strength of the samples was tested according to "GB / T529-2008 Determination of Tear Strength of Vulcanized Rubber or Thermoplastic Rubber". The test results are shown in Table 3 below:

[0116] Table 3

[0117] Example 1 Example 2 Example 3 Example 4 Example 5 Comparative Example 1 Comparative Example 2 Working time(s) 27 25 23 20 30 32 30 Intraoral curing time (s) 200 210 160 150 198 191 192 Consistency(mm) 20 21 19 24 26 36 38 Detail reproduction (μm) 20 20 20 20 20 40 40 Linear size change (%) 0.11 0.14 0.12 0.14 0.11 0.24 0.22 Elastic recovery rate (%) 99.86 99.87 99.88 99.92 99.91 99.15 99.22 Tear strength (kN / m) 4.11 4.51 5.65 6.01 5.78 6.57 6.83 Tensile strength(MPa) 5.46 5.27 5.13 4.91 4.84 5.07 5.03 Hardness(Shore A) 96 94 92 94 92 82 90

[0118] From the above data, it can be seen that both the examples and the comparative examples can meet basic use requirements; the hardness value of Example 1, which adds a combination of flaky powder and spherical powder and modified silicone oil, is significantly increased, while the comparative example without addition cannot reach this hardness; the hardness of the silicone rubber in the comparative example, which only adds modified silicone oil, is increased, and the hardness of the silicone rubber without adding a combination of flaky powder and spherical powder and modified silicone oil is significantly increased. However, the tear strength of the comparative example 1 is poor, while the tear strength of the comparative example 2-4 is increased by reducing the amount of flaky powder added.

[0119] Figure 1 This is a scanning electron microscope photograph of the filler after calcination in Example 2, and the addition of flaky powder can be observed.

[0120] (ii) Evaluation of the processing properties of dental silicone rubber bite registration materials, the method is as follows:

[0121] Impressions of standard models were made with dental silicone bite registration material, and the fixed positions were polished for the same time and compared in size according to ISO3302:

[0122] 1) Use a standard dental model for occlusal recording, and select the polishing position on the upper left third molar and the lower right central incisor;

[0123] 2) Grind the fixed position for 1 minute, using a diamond grinding head with a particle size of 10-50um;

[0124] 3) Perform roughness test on the fixed position after polishing. The test results are shown in Table 4 below:

[0125] Table 4

[0126]

[0127] From the data in the above table, it can be seen that both the examples and the comparative examples can meet basic usage requirements. In Example 1, the roughness of the combination of flaky powder and spherical powder added is relatively low, while the surface roughness of the combination without powder and modified silicone oil is relatively poor. The surface roughness of the combination with modified silicone oil and without flaky powder added is between the two. The addition of flaky powder in Examples 2-5 reduces the roughness and slightly increases it.

[0128] Although the present invention has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements may be made thereto based on the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all fall within the scope of protection claimed by the present invention.

Claims

1. A dental silicone rubber bite recording material, characterized in that: The dental silicone rubber bite registration material contains the following components based on the total weight: Vinyl silicone oil is greater than 0 and less than or equal to 30wt%; Modified vinyl silicone oil 10-20wt%; Silicone resin is greater than 0 and less than or equal to 20wt%; Dispersant is greater than 0 and less than or equal to 10wt%; The first reinforcing filler is 10-20wt%; the first reinforcing filler is a flake powder; the flake powder is selected from one or two of mica powder, talc powder and graphite; The second reinforcing filler 20-40wt%; Hydrogenated silicone oil 0.5-10wt%; The inhibitor is greater than 0 and less than or equal to 2.5wt%; The additive is greater than 0 and less than or equal to 5wt%; Platinum catalyst 0.01-10wt%; The second reinforcing filler is selected from one or more of inorganic powder, fiber powder, hollow yarn powder and spherical powder, and at least includes spherical powder; The dispersant is selected from one or more of stearic acid, polyether-modified silicone and polyether emulsifiers; The hydrogen-containing silicone oil is a benzene ring-modified hydrogen-containing silicone oil; The modified vinyl silicone oil is selected from one or more of the following: a low molecular chain siloxane whose side chain is substituted with a benzene ring group as shown in formula III, a low molecular chain siloxane whose silicon side chain is substituted with two benzene ring groups as shown in formula IV, a high molecular siloxane whose methyl group is substituted with a benzene ring group on a siloxane segment as shown in formula V, and a high molecular siloxane whose methyl group in each siloxane segment is substituted with a benzene ring as shown in formula VI; Formula III Formula IV Formula V In Formula V, n is 1-50, and m is 1-50; Formula VI In Formula VI, n is 1-50; The auxiliary agent is a polydimethylsiloxane having a benzene ring in the side chain as shown in Formula VIII; Formula VIII In Formula VIII, n is 1-50, and m is 1-50.

2. The dental silicone rubber bite registration material according to claim 1, characterized in that: The dental silicone rubber bite registration material contains the following components based on the total weight: Vinyl silicone oil 10-15wt%; Modified vinyl silicone oil 10-20wt%; Silicone resin 5-15wt%; Dispersant 0.1-3.5wt%; The first reinforcing filler is 10-20wt%; The second reinforcing filler 20-40wt%; Hydrogenated silicone oil 0.5-6wt%; Inhibitor 0.1-0.5wt%; Additives 0.1-1wt%; Platinum catalyst 2-5wt%.

3. The dental silicone rubber bite registration material according to claim 1 or 2, characterized in that: Based on the total weight of the dental silicone rubber bite recording material, the material contains 8-9wt% of mica powder and 2-11wt% of talc powder.

4. A dental silicone rubber bite recording material, characterized in that: The dental silicone rubber bite registration material is composed or made of components or raw materials including a matrix and a catalyst system; The matrix contains, based on the total weight of the matrix: Modified vinyl silicone oil 10-20wt%; Vinyl silicone oil is greater than 0 and less than or equal to 30wt%; Modified vinyl silicone oil 10-20wt%; Silicone resin is greater than 0 and less than or equal to 20wt%; Dispersant is greater than 0 and less than or equal to 10wt%; The first reinforcing filler is 10-20wt%; the first reinforcing filler is a flake powder; the flake powder is selected from one or two of mica powder, talc powder and graphite; The second reinforcing filler is 20-40wt%; the second reinforcing filler is selected from one or more of inorganic powder, fiber powder, hollow yarn powder and spherical powder, and at least includes spherical powder; Hydrogenated silicone oil 1-20wt%; The inhibitor is greater than 0 and less than or equal to 5wt%; The additive is greater than 0 and less than or equal to 5wt%; The catalyst system comprises, based on the total weight of the catalyst system: Vinyl silicone oil is greater than 0 and less than or equal to 30wt%; Modified vinyl silicone oil 10-20wt%; Silicone resin is greater than 0 and less than or equal to 20wt%; Dispersant is greater than 0 and less than or equal to 10wt%; The first reinforcing filler is 10-20wt%; the first reinforcing filler is a flake powder; the flake powder is selected from one or two of mica powder, talc powder and graphite; The second reinforcing filler is 20-40wt%; the second reinforcing filler is selected from one or more of inorganic powder, fiber powder, hollow yarn powder and spherical powder, and at least includes spherical powder; The additive is greater than 0 and less than or equal to 5wt%; Platinum catalyst 0.01-10wt%; The matrix and the catalyst system are kneaded in a weight ratio of (2-1): (1-2) to obtain a dental silicone rubber bite recording material; The dispersant is selected from one or more of stearic acid, polyether-modified silicone and polyether emulsifiers; The hydrogen-containing silicone oil is a benzene ring-modified hydrogen-containing silicone oil; The modified vinyl silicone oil is selected from one or more of the following: a low molecular chain siloxane whose side chain is substituted with a benzene ring group as shown in formula III, a low molecular chain siloxane whose silicon side chain is substituted with two benzene ring groups as shown in formula IV, a high molecular siloxane whose methyl group is substituted with a benzene ring group on a siloxane segment as shown in formula V, and a high molecular siloxane whose methyl group in each siloxane segment is substituted with a benzene ring as shown in formula VI; Formula III Formula IV Formula V In Formula V, n is 1-50, and m is 1-50; Formula VI In Formula VI, n is 1-50; The auxiliary agent is a polydimethylsiloxane having a benzene ring in the side chain as shown in Formula VIII; Formula VIII In Formula VIII, n is 1-50, and m is 1-50.

5. The dental silicone rubber bite registration material according to claim 4, characterized in that: The matrix contains, based on the total weight of the matrix: Vinyl silicone oil 10-15wt%; Modified vinyl silicone oil 10-20wt%; Silicone resin 5-15wt%; Dispersant 0.1-3.5wt%; The first reinforcing filler is 10-20wt%; The second reinforcing filler 20-40wt%; Hydrogenated silicone oil 1-12wt%; Inhibitor 0.2-1wt%; Additives 0.1-1wt%.

6. The dental silicone rubber bite registration material according to claim 4, characterized in that: The catalyst system comprises, based on the total weight of the catalyst system: Vinyl silicone oil 10-15wt%; Modified vinyl silicone oil 10-20wt%; Silicone resin 5-15wt%; Dispersant 0.1-3.5wt%; The first reinforcing filler is 10-20wt%; The second reinforcing filler 20-40wt%; Additives 0.1-1wt%; Platinum catalyst 2-10wt%.

7. The dental silicone rubber bite registration material according to any one of claims 4 to 6, characterized in that: The weight ratio of the substrate to the catalyst system is 1:

1.

8. The dental silicone rubber bite registration material according to any one of claims 1-2, 4-6, characterized in that: The vinyl silicone oil is selected from one or more of methyl vinyl siloxane, polyvinyl-terminated polydimethylsiloxane as shown in formula I, and side-chain vinyl polydimethylsiloxane as shown in formula II; and / or, Formula I In formula I, n is 1-100; Formula II In formula II, n is 1-50, and m is 1-50; The silicone resin is MQ resin; and / or, The inhibitor is selected from one or more of polyvinylmethylsiloxane, 3-(trimethylsilyl)propynol, 1-ethynyl-1-cyclohexanol, 1-ethynylcyclohexanol and 2-methyl-butynol; and / or, The platinum catalyst is selected from one or both of 1,3-divinyl-1,1,3,3-tetramethyldisiloxane platinum and platinum vinyl complex.

9. The dental silicone rubber bite registration material according to claim 8, characterized in that: The silicone resin is selected from one or more of methyl vinyl MQ silicone resin and vinyl MQ silicone resin.

10. The dental silicone rubber bite registration material according to claim 8, characterized in that: The modified hydrogen-containing silicone oil is shown in Formula VII; Formula VII In Formula VII, n is 1-50.

11. The dental silicone rubber bite registration material according to any one of claims 1-2, 4-6, characterized in that: The vinyl silicone oil is a compound of formula I, n=60, Formula I.

12. The dental silicone rubber bite registration material according to any one of claims 1-2, 4-6, characterized in that: The vinyl silicone oil is a compound of formula II, n=30, m=30, Formula II.

13. The dental silicone rubber bite registration material according to any one of claims 1-2, 4-6, characterized in that: The modified vinyl silicone oil is a compound of formula V, wherein n=10, m=30, Formula V.

14. The dental silicone rubber bite registration material according to any one of claims 1-2 and 4-6, characterized in that: The modified vinyl silicone oil is a compound of formula VI, n=40, Formula VI.

15. The dental silicone rubber bite registration material according to any one of claims 1-2, 4-6, characterized in that: The auxiliary agent is a compound of formula VIII, n=30, m=30, Formula VIII.

16. The method for preparing the dental silicone rubber bite recording material according to any one of claims 4 to 7, characterized in that: include: providing a substrate and a catalyst system; Mix the substrate and catalyst system.

17. The method for preparing the dental silicone rubber bite registration material according to claim 16, characterized in that: The substrate and the catalyst system are mixed separately by a kneading device, the kneading speed of the device is 5-20 rpm, and the mixing time is 0.5-2h.

18. Use of the dental silicone rubber bite registration material according to any one of claims 1 to 15 in preparing dental impressions.

19. A dental impression, characterized in that: Made of the dental silicone rubber bite registration material according to any one of claims 1 to 15.

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