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A kind of preparation method of dental composite resin material and its prepared product

A composite resin and dental technology, applied in dental preparations, dentistry, dental prosthesis, etc., can solve problems such as low double bond conversion rate and incomplete resin curing

Active Publication Date: 2021-09-10
LIAONING UPCERA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In practical application, using thermal curing process, the conversion rate of double bonds in the resin material is less than 80%, and the resin curing is not complete, so there is a technical problem in the prior art that the conversion rate of double bonds in the prepared composite resin material is low

Method used

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  • A kind of preparation method of dental composite resin material and its prepared product
  • A kind of preparation method of dental composite resin material and its prepared product
  • A kind of preparation method of dental composite resin material and its prepared product

Examples

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preparation example Construction

[0030] In order to solve the problems of the prior art, the invention provides a method for preparing a dental composite resin material, the method comprising:

[0031] (1), weighing raw materials, said raw materials include: resin monomers, fillers, photocuring initiators, thermal curing initiators, wherein said resin monomers include ethylenically unsaturated monomers and / or epoxy resins monomer, the ratio of the weight of the resin monomer to the filler is 10:90-90:10, preferably 15:85-50:50; the total amount of the photocuring initiator and thermal curing initiator accounts for 0.1-2% of the weight of the resin monomer, and the weight ratio of the photocuring initiator to the thermal curing initiator is 0.1:99.9-99.9:0.1, preferably 10:90-90:10.

[0032] In practical applications, resin monomers can be selected from polymerizable ethylenically unsaturated compounds with or without acid functional groups such as acrylates, methacrylates, hydroxyl-functionalized acrylates, h...

Embodiment 1

[0073] Weigh the raw materials according to the formula of Example 1 in Table 1, carry out surface modification treatment on the weighed fillers and reinforcing fibers, and then mix the surface modified fillers with the weighed raw materials to obtain the composite resin precursor things. The composite resin precursor was mixed by ball milling, wherein the mass ratio of composite resin precursor: grinding balls: ball milling aid was 2:4:1, and the ball milling time was 1.5 h. The ball-milled composite resin precursor was mixed with the surface-modified reinforcing fiber, and the mixed composite resin precursor was rotary evaporated at 55° C. for 1.5 h. The dried composite resin precursor was dried at 54° C. for 4 hours.

[0074] Then, the dry-press preforming, heat-curing process conditions and ultraviolet light-curing process conditions in Table 1 were used to heat-cure and light-cure the dried composite resin precursor to obtain a dental composite resin material.

Embodiment 2

[0075] Examples 2-4 adopted the raw material formulations and preparation process conditions recorded in Table 1, and prepared dental composite resin materials according to the preparation method described in Example 1. Wherein, in embodiment 2, before filler lanthanum glass powder, nano zirconium dioxide are mixed with other raw materials, carry out coupling agent modification treatment earlier, processing method and embodiment 1, filler barium glass powder, nano silicon dioxide The processing method is the same.

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Abstract

The invention provides a preparation method of a dental composite resin material and a product thereof, the method comprising: (1), weighing raw materials, the raw materials comprising: resin monomers, fillers, photocuring initiators, thermal curing initiator; (2), mixing the weighed raw materials to obtain a composite resin precursor; (3), subjecting the composite resin precursor to thermal curing treatment to obtain a pre-cured composite resin material, wherein the thermal curing temperature 100-200°C, the thermal curing time is 0.5-3h, and the thermal curing pressure is 1-250MPa; (4), the composite resin precursor after the thermal curing treatment is subjected to photocuring treatment to obtain a dental composite resin material, Among them, the light intensity of light curing is 800‑2000mW / cm 2 , the light curing time is 20-300s. The application of the invention can improve the double bond conversion rate of the composite resin material.

Description

technical field [0001] The invention relates to the field of dental restorations, in particular to a method for preparing a dental composite resin material and a product prepared therefrom. Background technique [0002] With the advancement of dental technology, CAD / CAM technology has also been used in the field of dental technology. The CAD / CAM technology beside the dental chair is to put computer-aided design and computer-aided production equipment next to the dental chair. After the doctor completes the tooth preparation and other treatments, he uses digital technology to obtain the patient's tooth model, and the computer performs data analysis. Techniques for the design and manufacture of dentures (restorations). Dental chairside diagnosis and treatment technology can complete the restoration at one time without the need for temporary restorations, reducing the number of patient visits, can significantly improve the precision and accuracy of the restoration, improve the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K6/887A61K6/891
CPCA61K6/887A61K6/891
Inventor 仇越秀王鸿娟石凤吴佳航
Owner LIAONING UPCERA CO LTD
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