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Dental adhesive capable of resisting fretting damage, method for preparing same and application thereof

An adhesive and dental technology, applied in dental preparations, dentistry, dental prosthesis, etc., can solve problems affecting the service life of fixed restorations, affecting the long-term stability of dental crowns, and increasing the workload of doctors, achieving good microscopic Effects of reducing damage due to vibration, reducing work load, and increasing service life

Active Publication Date: 2009-09-02
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existence of this fretting damage will affect the long-term stability of the crown, making it loose after a period of use, thus affecting the service life of the fixed restoration
Bring financial burden and mental pain to patients, but also increase the workload of doctors

Method used

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  • Dental adhesive capable of resisting fretting damage, method for preparing same and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-4

[0019] The specific implementation manner of embodiment 1-4 is:

[0020] A dental adhesive is composed of a powder and a liquid, wherein the components and mass ratio of the powder are 90-95 parts of zinc oxide, 2 parts of aluminum oxide and 3 parts of bismuth oxide; the components and mass ratio of the liquid are The ratio is 74-76 parts of orthophosphoric acid, 2 parts of zinc oxide, and 22-24 parts of deionized water.

[0021] The method for preparing the above-mentioned dental adhesive is as follows: take the zinc oxide, aluminum oxide and bismuth oxide in the mass ratio, and mix them fully to obtain a powder; weigh the orthophosphoric acid, desulfurized Ionized water and zinc oxide, then phosphoric acid is added to the ionized water, and then zinc oxide is added to the solution to make a liquid.

[0022] The use of the above-mentioned dental adhesive is as follows: After mixing 1.6-1.8 grams of powder with 1 milliliter of liquid evenly, it is used for bonding dental rest...

Embodiment 5

[0028] This example is substantially the same as Example 1, except that an appropriate amount of pigment is also added in the powder. The amount of trace pigment added is to make the color of the adhesive distinguishable from other dental adhesives. The powder of this example also contains an acid-base indicator whose discoloration point is a neutral point, that is, the pH value corresponding to the discoloration point is 6.7-7.2. The acid-base indicator can indicate the end point of the chemical reaction of the reconciled powder and liquid. Various commercially available existing acid-base indicators whose discoloration points are neutral points, such as phenolphthalein, methyl orange, and litmus, can be used; of course, the amount used is also based on the color of the acid-base indicator that can be observed.

[0029] After testing, the physical and chemical properties of the adhesive of the present invention after curing are shown in the following table:

[0030] ...

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PUM

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Abstract

The invention discloses a dental adhesive capable of resisting fretting damages, which consists of powder and liquor, wherein the powder comprises the following components in portion by mass: 90 to 95 portions of zinc oxide, 2 portions of aluminum oxide, and 3 portions of bismuth oxide; the liquor comprises the following components in portion by weight: 74 to 76 portions of orthophosphoric acid, 2 portions of zinc oxide, and 22 to 24 portions of deionized water. The adhesive has volume swelling characteristic in the adhering process, can prevent the fretting damages to a fixed prosthetic body, ensure the long-term stability of the fixed prosthetic body, and prolong the service life of the fixed prosthetic body; besides, the dental adhesive can relieve the pains of patients and lighten the workloads of doctors.

Description

technical field [0001] The invention relates to a dental adhesive and its preparation method and application. Background technique [0002] In the process of oral restoration, the full crown is a commonly used fixed restoration, and the full crown and the abutment preparation are connected with an adhesive. Adhesives have a great influence on the retentive force of the crown. [0003] Adhesives currently used clinically can be roughly divided into two categories: resin adhesives and cement adhesives. Resin adhesives realize their bonding function through the polymerization reaction of polymer compounds. Cement adhesives include zinc phosphate cement, polycarboxylate zinc cement and glass ionomer cement. The acid-base curing reaction of the cement type adhesive will occur during the bonding process, so that a mechanical interlocking force will be generated between the adherend and the adhesive, so that the two can be combined. [0004] For existing cement adhesives, due t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K6/06
Inventor 于海洋刘洋
Owner SICHUAN UNIV
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