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Rambutan-like SiO2-based dental composite resin and preparation method thereof

A composite resin, red hair technology, used in dental preparations, dentistry, dental prostheses, etc., can solve the problems of complex synthesis of new coupling agents and unavoidable degradation, so as to improve binding ability, reduce material breakage, increase Effect of contact area

Inactive Publication Date: 2018-11-23
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the synthesis of new coupling agents is more complicated, and the degradation phenomenon is still inevitable during the service of composite resins.

Method used

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  • Rambutan-like SiO2-based dental composite resin and preparation method thereof
  • Rambutan-like SiO2-based dental composite resin and preparation method thereof
  • Rambutan-like SiO2-based dental composite resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Preparation of composite resin

[0022] Rambutan-like SiO with a particle size of 2 μm was processed using a three-roll mill (EXAKT 80E, Germany). 2 , the resin matrix and the initiator system were uniformly mixed according to the formula shown in the following table to obtain an uncured composite resin paste, and then cured by light to obtain a dental composite resin.

[0023]

[0024] (2) Characterization of composite resin

[0025] Utilize the universal testing machine (Instron 5900, the United States) to test the bending and compressive properties of the composite resin sample. The size of the bending sample is 2mm×2mm×25mm, the span during the test is 20mm, and the pressure head speed is 0.75mm / min; The size of the compressed sample is Φ4mm×6mm, and the loading rate during the test is 1.00mm / min. The flexural strength of the prepared composite resin material is 126±5MPa, the flexural modulus is 12±0.8GPa, and the compressive strength is 317±15MPa.

Embodiment 2

[0027] (1) Preparation of composite resin

[0028] The rambutan-like SiO with a particle size of 0.5 μm was milled using a three-roll mill (EXAKT 80E, Germany). 2 , the resin matrix and the initiator system were uniformly mixed according to the formula shown in the following table to obtain an uncured composite resin paste, and then cured by light to obtain a dental composite resin.

[0029]

[0030] (2) Characterization of composite resin

[0031] The characterization method is the same as in Example 1. The bending strength of the prepared composite resin material is 145±10MPa, the bending modulus is 11±0.5GPa, and the compressive strength is 350±21MPa.

Embodiment 3

[0033] (1) Preparation of composite resin

[0034] Rambutan-like SiO with a particle size of 1 μm was milled using a three-roll mill (EXAKT 80E, Germany). 2 , the resin matrix and the initiator system were uniformly mixed according to the formula shown in the following table to obtain an uncured composite resin paste, and then cured by light to obtain a dental composite resin.

[0035]

[0036] (2) Characterization of composite resin

[0037] The characterization method is the same as in Example 1. The flexural strength of the prepared composite resin material is 122±7MPa, the flexural modulus is 9±0.6GPa, and the compressive strength is 328±14MPa.

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Abstract

The invention relates to a rambutan-like SiO2-based dental composite resin and a preparation method thereof. The composite resin comprises inorganic filler, a resin matrix and an initiator system, wherein the inorganic filler is rambutan-like SiO2. The preparation method comprises the following steps: mixing the rambutan-like SiO2, the resin matrix and the initiator system to obtain an uncured composite resin paste, and then performing light curing to obtain the dental composite resin. The dental composite resin provided by the invention has simple preparation and excellent performances, and the surface of the rambutan-like SiO2 has a convex structure similar to sawtooth; by the mutual occlusion between the sawtooth, the frictional force between SiO2 particles is improved, and the materialfracture due to relative slippage of particles is reduced; in addition, by utilizing the rough structure of the surface of SiO2, the contact area between the resin matrix and SiO2 is increased, the bonding ability of the organic-inorganic phase interface is improved, and thus the mechanical properties of the composite resin are improved.

Description

technical field [0001] The invention relates to a rambutan-like SiO 2 The invention relates to a dental-based composite resin and a preparation method thereof, which belong to the field of preparation of materials for oral restoration. Background technique [0002] Dental caries is a common and frequently-occurring disease of the oral cavity. According to the report of the World Health Organization (WHO), 60-90% of school-age children and nearly 100% of adults suffer from dental caries, seriously affecting public health. Composite resin has become an important material for caries treatment due to its excellent aesthetics, good safety and easy clinical operation. Composite resin is mainly composed of inorganic filler, resin matrix and a small amount of photoinitiator system. The main function of inorganic filler is to endow the composite resin with good mechanical properties, and at the same time, it has the functions of reducing resin polymerization shrinkage and X-ray blo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K6/027A61K6/083
CPCA61K6/831A61K6/887C08L33/08
Inventor 朱美芳王亚子钱力陈红艳王瑞莉江晓泽
Owner DONGHUA UNIV
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