Photosensitive resin, application thereof and preparation method of tooth retainer

Abstract

The invention provides photosensitive resin and application thereof and a preparation method of a tooth retainer. The photosensitive resin comprises the following raw material components in parts by weight: 100 parts by weight of esters, 5-15 parts by weight of a photoinitiator, 30-50 parts by weight of isocyanate, 5-25 parts by weight of polyol, 5-15 parts by weight of a chitosan oligomer, 3-8 parts by weight of an amine catalyst, 5-15 parts by weight of a chain extender, 15-25 parts by weight of silicon dioxide particles and 10-15 parts by weight of polyurethane. The ester is a mixture of lauryl acrylate and polyethylene glycol acrylate. The tooth retainer formed by printing the photosensitive resin according to the technical scheme of the invention has hardness and tensile strength, meets the use requirements, has good antibacterial and anti-inflammatory effects, and avoids the problems of bacteria and inflammation easily caused by long-term wearing of a traditional tooth retainer.

Description

technical field

[0001] The invention relates to the field of materials, in particular to a photosensitive resin, its application and a preparation method of a tooth retainer. Background technique

[0002] In orthodontic clinical work, patients who have finished treatment need to make a retainer, the purpose is to maintain the effect of correction and prevent the tendency of teeth to return to their original deformity. Therefore, it is recommended that patients wear it for life after treatment to ensure the stability of the treatment effect. The types of retainers include Harley retainers and transparent thermocompression retainers, and transparent thermocompression retainers are the main ones. At present, the transparent hot-pressed retainer is mainly obtained by making an impression, pouring a plaster model, and hot-pressing after trimming the model. The retention effect of the transparent thermocompression retainer is better, but in the clinical investigation, it was fou...

Examples

Embodiment 1

[0031] The raw material components of photosensitive resin in the present embodiment include:

[0032]

[0033] The esters are a mixture of lauryl acrylate and polyethylene glycol acrylate in a mass ratio of 1:1.

[0034] The photoinitiator is benzyl dimethyl ketal.

[0035] The isocyanate is toluene diisocyanate.

[0036] The polyol is a polyester polyol with a number average molecular weight of 50,000.

[0037] The chain extender is ethylenediamine.

[0038] The chitosan oligomer is O-carboxymethyl deacetylated polysaccharide, the number average molecular weight is 10000, and the degree of deacetylation is greater than 0.5.

[0039] The amine catalyst is bis(2-dimethylaminoethyl)ether and N,N-dimethylethanolamine.

Embodiment 2

[0041] The raw material components of photosensitive resin in the present embodiment include:

[0042]

[0043] The esters are a mixture of lauryl acrylate and polyethylene glycol acrylate in a mass ratio of 1:2.

[0044] The photoinitiator is diphenyl (2,4,6-trimethylbenzoyl)-phosphine oxide.

[0045] The isocyanate is toluene diisocyanate.

[0046] The polyol is a polyester polyol with a number average molecular weight of 50,000.

[0047] The chain extender is ethylenediamine.

[0048] The chitosan oligomer is O-carboxymethyl deacetylated polysaccharide, the number average molecular weight is 10000, and the degree of deacetylation is greater than 0.5.

[0049] The amine catalyst is bis(2-dimethylaminoethyl)ether and N,N-dimethylethanolamine.

Embodiment 3

[0051] The raw material components of photosensitive resin in the present embodiment include:

[0052]

[0053]

[0054] The esters are a mixture of lauryl acrylate and polyethylene glycol acrylate in a mass ratio of 1:2.

[0055] The photoinitiator is diphenyl (2,4,6-trimethylbenzoyl)-phosphine oxide.

[0056] The isocyanate is 1,6-hexamethylene diisocyanate.

[0057] The polyol is a polyester polyol with a number average molecular weight of 50,000.

[0058] The chain extender is ethylenediamine.

[0059] The chitosan oligomer is O-carboxymethyl deacetylated polysaccharide, the number average molecular weight is 10000, and the degree of deacetylation is greater than 0.5.

[0060] The amine catalyst is bis(2-dimethylaminoethyl)ether and N,N-dimethylethanolamine.

technical field

[0001] The invention relates to the field of materials, in particular to a photosensitive resin, its application and a preparation method of a tooth retainer. Background technique

[0002] In orthodontic clinical work, patients who have finished treatment need to make a retainer, the purpose is to maintain the effect of correction and prevent the tendency of teeth to return to their original deformity. Therefore, it is recommended that patients wear it for life after treatment to ensure the stability of the treatment effect. The types of retainers include Harley retainers and transparent thermocompression retainers, and transparent thermocompression retainers are the main ones. At present, the transparent hot-pressed retainer is mainly obtained by making an impression, pouring a plaster model, and hot-pressing after trimming the model. The retention effect of the transparent thermocompression retainer is better, but in the clinical investigation, it was fou...

Examples

Embodiment 1

[0031] The raw material components of photosensitive resin in the present embodiment include:

[0032]

[0033] The esters are a mixture of lauryl acrylate and polyethylene glycol acrylate in a mass ratio of 1:1.

[0034] The photoinitiator is benzyl dimethyl ketal.

[0035] The isocyanate is toluene diisocyanate.

[0036] The polyol is a polyester polyol with a number average molecular weight of 50,000.

[0037] The chain extender is ethylenediamine.

[0038] The chitosan oligomer is O-carboxymethyl deacetylated polysaccharide, the number average molecular weight is 10000, and the degree of deacetylation is greater than 0.5.

[0039] The amine catalyst is bis(2-dimethylaminoethyl)ether and N,N-dimethylethanolamine.

Embodiment 2

[0041] The raw material components of photosensitive resin in the present embodiment include:

[0042]

[0043] The esters are a mixture of lauryl acrylate and polyethylene glycol acrylate in a mass ratio of 1:2.

[0044] The photoinitiator is diphenyl (2,4,6-trimethylbenzoyl)-phosphine oxide.

[0045] The isocyanate is toluene diisocyanate.

[0046] The polyol is a polyester polyol with a number average molecular weight of 50,000.

[0047] The chain extender is ethylenediamine.

[0048] The chitosan oligomer is O-carboxymethyl deacetylated polysaccharide, the number average molecular weight is 10000, and the degree of deacetylation is greater than 0.5.

[0049] The amine catalyst is bis(2-dimethylaminoethyl)ether and N,N-dimethylethanolamine.

Embodiment 3

[0051] The raw material components of photosensitive resin in the present embodiment include:

[0052]

[0053]

[0054] The esters are a mixture of lauryl acrylate and polyethylene glycol acrylate in a mass ratio of 1:2.

[0055] The photoinitiator is diphenyl (2,4,6-trimethylbenzoyl)-phosphine oxide.

[0056] The isocyanate is 1,6-hexamethylene diisocyanate.

[0057] The polyol is a polyester polyol with a number average molecular weight of 50,000.

[0058] The chain extender is ethylenediamine.

[0059] The chitosan oligomer is O-carboxymethyl deacetylated polysaccharide, the number average molecular weight is 10000, and the degree of deacetylation is greater than 0.5.

[0060] The amine catalyst is bis(2-dimethylaminoethyl)ether and N,N-dimethylethanolamine.

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