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Adhesive composition for dental use

A composition and adhesive technology, used in dentistry, dental preparations, dental prostheses, etc., can solve the problems of insufficient dentin adhesion, inability to achieve adhesive strength, and inability to obtain adhesive strength.

Inactive Publication Date: 2009-11-25
TOKUYAMA DENTAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The polymerizable composition used as such an adhesive usually contains a methacrylate-based monomer as a main component of the polymerizable monomer, but its adhesive force to dentin is not sufficient
For example, when a polymeric composition is used to bond the composite resin to the dentin, it is often possible to overcome the internal stress (tensile stress generated at the interface between the dentin and the composite resin) generated when the composite resin is cured. Strength also cannot be obtained
Furthermore, the bond strength to withstand the forces due to occlusal cannot usually be achieved

Method used

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  • Adhesive composition for dental use
  • Adhesive composition for dental use
  • Adhesive composition for dental use

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0271]

[0272] The dental adhesive composition of the present invention can be prepared by uniformly mixing the above-mentioned various ingredients, and then adjusting the concentration of earth metal ions within a predetermined range.

[0273] Although this composition contains acidic substances such as a phosphoric acid-based monomer (A1) and an acidic substance for adjusting pH, as described above, no acidic substance stronger than phosphoric acid is used, specifically, no A strong acid with a pKa value below the pKa value (2.15) of the primary ionization in water at 25°C. That is, if the conjugate base ion of such a strong acid is contained in the adhesive composition, the adhesive strength of the cured body decreases. This is because the conjugated base ion of the strong acid competes with the above-mentioned earth metal ion and ionically bonds with the acidic group contained in the phosphoric acid-based monomer (A1), thereby inhibiting the interaction between the eart...

Embodiment 1

[0412] 1.5g of PM (phosphate-based monomer), 3.0g of BisGMA, 2.0g of 3G, and 3.5g of HEMA were used as the polymerizable monomer component (A), 0.4g of aluminum isopropoxide was used as the source of earth metal ions (B), and 0.1g of camphor was used Quinone and 0.15 g of DMBE were used as polymerization initiator (E). These components were stirred and mixed with 8.5 g of IPA (organic solvent), 1.5 g of distilled water (C) and 0.03 g of BHT (polymerization inhibitor) for 24 hours to prepare the dental adhesive composition (adhesive material for composite resin) of the present invention.

[0413] The pH measurement of the adhesive resin composition and various measurements related to phosphoric acid-based monomers, metal ions, and anions were performed in accordance with the methods described above. In addition, the test piece I for adhesive material evaluation was produced by the above-mentioned method, and the adhesion durability to enamel and dentin was evaluated by the adhe...

Embodiment 2～20

[0415] According to the method of Example 1, an adhesive composition (adhesive material for composite resin) having the composition shown in Table 1 was prepared, and the same measurement as in Example 1 and the evaluation of adhesion durability according to Adhesion Test A were carried out. The results are shown in Table 2.

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PUM

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Abstract

Disclosed is an adhesive composition for dental use, which comprises a polymerizable monomer component (A) comprising a phosphoric acid-type polymerizable monomer having an acidic group derived from phosphoric acid and a multivalent metal ion-releasing component (B) and shows an acidic nature, wherein the multivalent metal ion-releasing component (B) can release at least an earth metal ion, and wherein an earth metal ion derived from the component (B) is present in the composition together with the phosphoric acid-type polymerizable monomer in such an amount that a ratio of total valency number (RE) as defined by the formula (1) is 0.2 to 3.0. RE = TVE / TVA (1) [wherein TVE represents the total number of valencies of the earth metal ions contained in the composition; and TVA represents thetotal number of valencies of the acidic group in the phosphoric acid-type polymerizable monomer contained in the composition.] The adhesive composition can adhere and fix a composite resin or prosthesis to a tooth structure more tightly and stably over a prolonged period.

Description

technical field [0001] The present invention relates to a dental adhesive composition used for bonding a dental prosthesis made of metal, organic polymer, ceramics, or their composite materials to dentine in the field of dental medicine. Background technique [0002] When the dentin is damaged by caries, etc., and the cavity caused by the damage is small, it is often repaired directly with a composite resin from the viewpoint of aesthetics, ease of operation, and rapidity. On the other hand, when the cavity due to damage is large, a prosthesis made of metal, ceramic or resin cured material is used to repair the cavity. [0003] Since dental restorative materials such as composite resins or prosthetics have no adhesiveness to the dentin, an adhesive material formed from a polymeric composition is used to bond the restorative material to the dentin. A polymerizable composition used as such an adhesive generally contains a methacrylate-based monomer as a main component of a po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K6/00A61K6/06A61K6/083A61K6/884
Inventor 松重浩司铃木健清水静香百百海步
Owner TOKUYAMA DENTAL CORP