LASER ACOUSTIC EVALUATION OF DENTAL MATERIALS BONDING

牙科材料粘合的激光声学评估

• 批准号: 3425786
• 负责人: EVAN H GREENER
• 金额: $ 2.96万
• 依托单位: NORTHWESTERN UNIVERSITY AT CHICAGO
• 依托单位国家: 美国
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-08-01 至 1994-07-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/3425786
• 关键词: biomaterial evaluation; composite resins; dental bonding material; dentin; lasers; sound; technology /technique; tensile strength

This pilot study attempts to evaluate, for dental materials use, a new technique called the laser acoustic emission thermal technique, (LAETT). This procedure has been successfully used to study the bond strength between graphite fibers in an epoxy matrix, but may be appropriate to locally quantify the filler/matrix interaction in dental composite materials as well as the bonding strength between dentin bonding agent and dentin. Inherent in LAETT may be the ability, in dental composites, to localize the investigation of the fiber/matrix interface thus removing the contribution from the resin matrix. This is important in attempting to explain the change in strength values and wear in composites when subjected to oral fluids. Applied to dentin bonding, LAETT may be able to localize the bonding agent interface and thus eliminate the confounding effect of the macroscopic shear bond strength test which needs to incorporate a composite/bonding agent interface to obtain strength values. Results obtained With LAETT will be compared with those obtained by conventional techniques, which include the compressive and diametral tensile tests in the case of composites, and shear strength measurements in the case of dentin bonding, to determine the extent of correlation. It is the objective of this work to determine if quantitative measurements in dental composites and dentin bonding can actually be made by (LAETT). Both conventional and LAETT techniques will be applied in this pilot study to quantify the effects in the filler/matrix interfacial bonding strengths of model dental composites produced by altering the volume fraction and silanation of fillers as well as through the accelerated degradation of filler/matrix interfacial bonds under the oral simulating environments. In addition, both conventional and LAETT test methods will be applied to quantify the dentin bonding strengths of commercial dentin bonding agents and their degradation under saline solution storage.

这项初步研究试图评估，牙科材料的使用，一种新的

项目成果

Effect of food and oral simulating fluids on dentine bond and composite strength.

食物和口腔模拟液对牙本质粘合和复合强度的影响。

• DOI: 10.1016/0300-5712(94)90088-4
• 发表时间: 1994
• 期刊: Journal of dentistry
• 影响因子: 4.4
• 作者: Lee,SY;Greener,EH;Mueller,HJ;Chiu,CH
• 通讯作者: Chiu,CH