A two-component self-etching adhesive composition for laser preparation of dentin

A bonding composition, composition technology, applied in the direction of dentistry, dental prosthesis, dental preparations, etc., can solve problems such as insuitability for inlays or crowns, rough and uneven preparation surfaces, and unclear edges and corners

Inactive Publication Date: 2019-02-26
何正娣
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the tooth tissue prepared by Er:YAG laser has the characteristics of indistinct corners and rough and uneven preparation surface, it is not suitable for inlay or crown restoration, and can only be repaired by resin bonding technology.

Method used

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  • A two-component self-etching adhesive composition for laser preparation of dentin
  • A two-component self-etching adhesive composition for laser preparation of dentin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1: Comprising a self-etching primer composition and an adhesive composition; for the acid resistance of the dentin surface after laser preparation, the self-etching primer composition includes a polymeric monomer containing an acidic group body, adjust the pH value of the self-etching primer composition from 1 to 1.5, and the self-etching pH value of the adhesive composition after the fast machine preparation is 2;

[0034] It can exist stably at room temperature and undergo photoinitiated polymerization; after preparing the adhesive composition, store it in a thermostat at 37 degrees for one month, and the adhesive strength does not change before and after storage;

[0035] For laser preparation of the 8-15 micron thick sub-corrosion layer of the tooth tissue, the resin monomer in the adhesive composition can penetrate into the sub-corrosion layer, polymerize through the light-curing resin monomer, and the bonding material in the adhesive composition Cured t...

Embodiment 2

[0046] Example 2: The double-liquid adhesive composition for laser tooth preparation of the present invention According to preliminary work, with the widespread use of lasers in dental clinics, especially the promotion of lasers in the treatment of dental caries, the current adhesive system will not be able to To meet clinical needs, a new system that can provide reliable and stable bonding effects for laser-prepared dental tissues will be urgently needed. See Table 1:

[0047]

[0048] Table 1 Composition design of two-component self-etching adhesive composition

Embodiment

[0049] The content of the embodiment is mainly divided into 4 parts:

[0050] 1) Observation of the physical and chemical properties of dentin after Er:YAG laser preparation and fast machine cutting

[0051] For the measurement of the hardness and elastic coefficient of the secondary corrosion layer, through the comparative analysis of the distribution of sulfur, phosphorus, and calcium elements in the dentin, discuss the influence of the fast machine and Er:YAG laser on the dentin, and discuss the effect of laser irradiation on the dentin. Influence of physicochemical properties.

[0052] 2) Developed adhesive composition

[0053] In view of the characteristics of dentin after laser preparation, the two-component adhesive composition X for laser preparation of dentin was invented and developed.

[0054] 3) Adhesive strength test

[0055] Compare the adhesive composition X with the 5th generation, the 7th generation fast machine preparation tooth tissue adhesive system with...

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Abstract

The invention discloses a dual-liquid self-etching bonding composition for laser-prepared dentine. The dual-liquid self-etching bond composition comprises a self-etching bottom sizing agent composition and a bonding agent composition, wherein the self-etching bottom sizing agent composition comprises a polymeric monomer, water, a photo-polymerization initiator, an aqueous organic solvent, an inorganic filling material, a retardant, a stabilizer and additives; the bonding agent composition comprises the polymer monomer, the photo-polymerization initiator, the retardant, the additives and the inorganic filling material. The invention mainly aims to invent and develop a photo-curing dual-liquid self-etching bonding composition specific to the tissue characteristics of the laser-prepared dentine.

Description

technical field [0001] The invention relates to the design field of a dental composite material, and relates to a composition for realizing laser preparation of dentin. Background technique [0002] Caries is one of the most common diseases in dentistry. "Dental caries", commonly known as "tooth decay" and "tooth decay", is a disease with a very high incidence rate in humans. The third oral health survey in my country in 2005 showed that more than 66 out of every one hundred 5-year-old children had dental caries in their mouths. Among middle-aged people aged 35 to 44, this proportion rose to 88.1%, while 65 to 44 years old had dental caries. The caries rate of 74-year-olds is as high as 98.4%. When caries is formed, the traditional treatment method is to use a fast machine to grind away carious tooth tissue, and use filling materials to repair the tissue at the defect. However, when the fast machine cuts the hard tissue of the tooth, it will produce harsh sounds, which wil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K6/083A61K6/00
CPCA61K6/62A61K6/71A61K6/76A61K6/79A61K6/887A61K6/898C08L1/286C08L29/04C08L33/26C08L39/06
Inventor 何正娣
Owner 何正娣
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