Grinding agent for dental ceramic material

A technology of dental ceramics and abrasives, applied in the direction of polishing compositions containing abrasives, other chemical processes, chemical instruments and methods, etc., can solve problems such as poor tensile behavior, achieve improved brightness, surface brightness, and reduce The effect of surface scratches

Active Publication Date: 2009-06-24
JIANGSU HAIXUN IND GROUP SHARE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ceramic materials have a long history of application in prosthodontics and a wide range of applications. However, the tensile behavior of ceramics is very poor, and fracture occurs at a very low critical strain point (about 0.1~0.2%). Dental ceramic materials require smooth porcelain surfaces. In this way, bacterial plaque is not easy to adhere. For this reason, the present invention provides a dental ceramic material abrasive, which can provide high surface finish, and at the same time, in the polishing process, the internal stress produced

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] In the present embodiment, the percentage by weight of each component of dental ceramic abrasive is as follows:

[0030] components weight percentage 50nm silica powder 30 Fatty alcohol polyoxyethylene ether with a polymerization degree of 15 (0-15) 0.6 salicylic acid 5 Deionized water 64.4

[0031] Preparation method: according to the weight percentage of each component, weigh 30 grams of 50nm silicon dioxide powder, 0.6 grams of fatty alcohol polyoxyethylene ether (0-15) with a polymerization degree of 15, 5 grams of salicylic acid, and 64.4 grams of deionized water , set aside; first dissolve 30 grams of silicon dioxide powder in 64.4 grams of water and stir thoroughly, then add 0.6 grams of fatty alcohol polyoxyethylene ether, 5.0 g of salicylic acid, and stir for one hour at room temperature to disperse evenly, which becomes Abrasives for dental ceramic materials according to the invention. The abrasive of the dental ceramic ...

Embodiment 2

[0033] In the present embodiment, the percentage by weight of each component of dental ceramic abrasive is as follows:

[0034] components weight percentage 80nm alumina powder 40 Lauroyl monoethanolamine 0.4 Alkyne diol 8 Deionized water 51.6

[0035] Preparation method: according to the weight percentage of each component, weigh 40 grams of 80nm aluminum oxide powder, 0.4 grams of lauroyl monoethanolamine, 8.0 g of acetylene glycol, and 51.6 grams of deionized water, and set aside; Aluminum powder was dissolved in 51.6 grams of water and fully stirred, added 0.4 gram of lauroyl monoethanolamine, 8.0 g of acetylene glycol, and stirred at room temperature for one hour to disperse evenly, which became the abrasive of the dental ceramic material of the present invention. The abrasive has a pH of 7.05 and a specific gravity of 1.0030.

Embodiment 3

[0037] In the present embodiment, the percentage by weight of each component of dental ceramic abrasive is as follows:

[0038] components % by weight 100nm cerium oxide powder 18 Sorbitan polyoxyethylene ether ester with a degree of polymerization of 60 0.8 Alkyne diol 8 Deionized water 73.2

[0039] Preparation method: according to the weight percentage of each component, weigh 18 grams of 100nm cerium oxide powder, 0.8 grams of sorbitan polyoxyethylene ether ester (T-60) with a degree of polymerization of 60, 8.0 grams of acetylene glycol, and 73.2 grams Deionized water, set aside. Dissolve 18 grams of cerium oxide powder in 73.2 grams of water and stir thoroughly, add 0.8 grams of lauroyl monoethanolamine and 8.0 grams of acetylene glycol, and stir for one hour at room temperature to disperse it evenly, which becomes the dental ceramic material of the present invention. Abrasives. The abrasive has a pH value of 6.95 and a specific g...

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Abstract

The invention relates to a grinding agent for dental ceramic materials, comprising, based on weight percent, the following ingredients: 10%-40% of grinding materials; 0.1%-0.8% of a surfactant; 1%-10% of a brightening agent and deionized water as the balance. The invention has the following technical effects that: 1) the grinding agent has great dispersity and uniform particle size distribution, and can efficiently reduce scratches on the surface of the grinded dental ceramic materials while enhancing the brightness; 2) adding the surfactant can effectively control the uniformity of grinding and polishing during the course of working and lessen the defects on the surface; in addition, the polishing rate can be improved dramatically and the polishing process is free from the brittle fracture of the dental ceramic materials; 3) adding the brightening agent in the process of processing the dental ceramic materials can advance the brightness on the surface of the polished dental ceramic materials and naturalize the color thereof, thus meeting exquisite beauty appreciating demands of people; 4) the grinding solution of the invention is neutral and has good chemical stability and ideal usage safety.

Description

technical field [0001] The invention relates to an abrasive, in particular to a dental ceramic abrasive. Background technique [0002] Ceramic materials have been used in oral restoration for more than 200 years because they are similar to the color of natural teeth and have good biocompatibility. Looking back at its development history, it is not difficult to find that one of the main driving forces for the development of ceramics has always been how to improve its strength. In recent decades, ceramics have developed particularly rapidly, increasing their strength, while also improving their suitability and aesthetics. [0003] Dental ceramics have excellent light transmission and light reflection functions, can reproduce the translucency depth and color depth of natural teeth, have good biocompatibility, and do not degrade in the oral environment, so ceramic restorations are beautiful and safe to use, and are very popular. Ceramic materials have a long history of applica...

Claims

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Application Information

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IPC IPC(8): C09G1/02C09K3/14
Inventor 仲跻和
Owner JIANGSU HAIXUN IND GROUP SHARE
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