CN112472610A

CN112472610A - High SiO2Preparation method of pre-crown by adding amount of epoxy resin

Info

Publication number: CN112472610A
Application number: CN202011502499.8A
Authority: CN
Inventors: 于世泳; 郭敏; 段昊辰; 高静; 任宏飞
Original assignee: Inner Mongolia University
Current assignee: Inner Mongolia University
Priority date: 2020-12-18
Filing date: 2020-12-18
Publication date: 2021-03-12

Abstract

The invention discloses a high SiO₂Method for preparing pre-canopy of high SiO epoxy resin in additive amount₂The preparation method of the pre-crown by adding the epoxy resin consists of EPO-TEK 301 epoxy resin and SiO₂、TiO₂And alkali-free glass fiber cloth. The preformed crown has the advantages of high hardness, good wear resistance, high toughness, low price and the like.

Description

High SiO2Preparation method of pre-crown by adding amount of epoxy resin

Technical Field

The invention relates to the field of composite materials, in particular to a high SiO₂A preparation method of pre-crown by adding amount of epoxy resin.

Background

The breast caries of children is the most common breast caries, external material repair is needed for treating large-area caries of children teeth, and a pre-crown repair technology is gradually applied to clinical treatment of broken breast teeth. The mainstream finished products in the market at present are transparent pre-crown forming, metal pre-crown forming and all-ceramic crown. Transparent pre-crown with low hardness and unattractive appearance, metalThe pre-coronal color is very different from natural teeth, and many patients are allergic to metal. The all-ceramic crown has the disadvantage of being expensive. In order to improve the disadvantages of the dental crown made of the above materials, a dental crown excellent in hardness, toughness, beauty, price, etc. is required. Since the user is a child and only needs to use the child for 2 to 3 years, the low cost is also one of the very important factors. Aiming at the characteristics, the invention adds SiO₂And TiO₂The pre-formed crown made of the epoxy resin composite material has obvious advantages in the aspects of hardness, toughness, attractiveness, price and the like.

Disclosure of Invention

The invention provides a high SiO₂A preparation method of pre-crown by adding amount of epoxy resin.

The technical scheme of the invention is as follows:

high SiO₂The preparation method of the pre-crown with the addition amount of the epoxy resin comprises the following steps of preparing the pre-crown by using the epoxy resin and the inorganic filler SiO₂And TiO₂And glass fiber cloth.

The high SiO₂The preparation method of the pre-coronation of the added amount of the epoxy resin is prepared from EPO-TEK 301 epoxy resin: SiO 2₂：TiO₂: two layers of 0.047mm alkali-free glass fiber cloth = 5: 0.3: 0.015: a ratio of 0.05. Wherein the curing temperature of the inorganic filler resin mixture is 65 ℃ and the time is 2 hours.

High SiO₂The preparation method of the pre-crown by adding the epoxy resin comprises the following steps:

(1) EPO-TEK 301 epoxy resin a-component and B-component were formulated as a: B =4: 1. After preparation, the mixture is stirred uniformly;

(2) 5 parts by weight of the epoxy resin prepared in the step (1) and 0.3 part by weight of SiO₂0.015 parts by weight of TiO₂And mixing to obtain the inorganic filler epoxy resin mixture.

(3) Pretreating 0.05 part by weight of glass fiber cloth with the thickness of 0.047mm, cutting the glass fiber cloth into proper size, and soaking the glass fiber cloth in H with the volume fraction of 30 percent₂O₂In solution for 10min, thenPlacing glass fiber in deionized water, ultrasonically cleaning for 5min, soaking in absolute ethyl alcohol for 5min, ultrasonically drying, coating a silane coupling agent on the treated glass fiber cloth, and standing for later use;

(4) injecting an inorganic filler epoxy resin mixture into the dental impression, pressing the glass fiber cloth processed in the step (3) into the impression filled with the inorganic filler resin mixture through a male die, wherein the glass fiber cloth comprises 2 layers, the directions of the two layers of glass fiber cloth are different, then continuously adding the inorganic filler resin mixture to enable the inorganic filler resin mixture to be paved on the surface of the glass fiber cloth, pressing the glass fiber cloth together through the male die, curing for 2h at 65 ℃, taking out the impression after curing is finished, obtaining a pre-formed crown primary product, filling the impression with the inorganic filler resin mixture prepared in the step (2), pressing the obtained pre-formed crown primary product into the impression, and curing for 2h at 65 ℃. And uniformly coating the resin prepared according to the A: B =4:1 on the surface of the pre-formed crown, and curing for 2 hours at 65 ℃.

(5) And (4) after the final curing is finished, taking the pre-formed crown out of the impression, and polishing the shape of the pre-formed crown according to the will of a user.

The invention has the advantages that:

(1) the high SiO of the invention₂The preparation method of the pre-crown by adding the epoxy resin with the addition amount is that the inorganic filler SiO is added₂And TiO₂The hardness and the wear resistance of the pre-crown are greatly improved, and the toughness of the pre-crown is greatly improved by adding the glass fiber cloth. This allows the user to chew any food, greatly improving the quality of life.

Detailed Description

Example 1A high SiO₂The preparation method of the pre-corollary by adding the epoxy resin comprises the following steps of: SiO 2₂：TiO₂: two layers of 0.047mm alkali-free glass fiber cloth = 5: 0.3: 0.015: 0.05 proportion.

(1) EPO-TEK 301 epoxy resin A component and B component are prepared, wherein A: b =4:1, uniformly stirring the mixture after preparation;

(2) 5 parts by weight of the ring prepared in the step (1)Oxygen resin, 0.3 part by weight of SiO₂0.015 part by weight of TiO₂Mixing to obtain an inorganic filler epoxy resin mixture;

(3) 0.05 part by weight of 0.047mm glass fiber cloth is cut into proper size and soaked in H with the volume fraction of 30 percent₂O₂Placing the glass fiber in deionized water for 10min, ultrasonically cleaning for 5min, soaking in absolute ethyl alcohol for 5min, ultrasonically drying, coating a silane coupling agent on the treated glass fiber cloth, and standing for later use;

(4) injecting the inorganic filler resin mixture mixed in the step (2) into a tooth impression, pressing the glass fiber cloth processed in the step (3) into the impression filled with resin through a male die, wherein the glass fiber cloth is 2 layers, the directions of the glass fiber cloth layers are different, then continuously adding resin to enable the glass fiber cloth layers to be fully paved on the surface of the glass fiber cloth, pressing the glass fiber cloth layers together through the male die, and curing the mixture for 2 hours at 65 ℃; and (3) after the curing is finished, taking out the die to obtain a pre-formed crown primary product, filling the die with the inorganic filler resin mixture prepared in the step (2), pressing the obtained pre-formed crown primary product into the die, and curing for 2 hours at 65 ℃. Uniformly coating the resin prepared according to the ratio of A to B =4:1 on the surface of the preformed crown, and curing for 2 hours at 65 ℃ to increase the surface glossiness of the preformed crown;

(5) and (4) after the second curing is finished, taking the dental crown out of the impression, and polishing the shape of the dental crown according to the will of a user.

The Shore hardness of the composite material can reach 82 HD.

Claims

1. High SiO₂The preparation method of the added amount of the epoxy resin pre-corona is characterized in that the pre-corona is prepared from EPO-TEK 301 epoxy resin: SiO 2₂：TiO₂: two layers of 0.047mm alkali-free glass fiber cloth = 5: 0.3: 0.015: 0.05; wherein the curing conditions are as follows: the curing temperature is 65 ℃, and the curing time is 2 h.