The Studies of Nano Hydroxyapatite for Teeth Remineralization.

• Main Authors: Wei-Hsin Hsu, 徐尉芯
• Other Authors: 楊重光
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/dymf3h

碩士 === 國立臺北科技大學 === 化學工程研究所 === 101 === The purpose of this study is to investigate the remineralization effect of nano HA/γ-PGA solution onthe surface etched enamel. Partical size of the remineralization solution was determined byDynamic Light Scattering (DLS).Microhardnessmeasurements were used to analyzethe remineralization ratio before and after the treatments of the teeth.The highest remineralization ratio is found to be 30.1±5.5% in the 10 minutes immersed time. To examine these enamel surfaces, the peak intensity of the PO43- increased with soaking time by Fourier transform infrared spectroscopy (FTIR).This proved that the remineralization solutions mayrepair the enamel surface of teeth erosion. The roughnesses of the sample were determined by Atomic Force Microscope (AFM). After the addition of the remineralization solutions, the roughnesses changed from 39.14 ± 2.11nm to 29.41±0.36nm. The 5g of Nano HA and 0.263g 5% γ-PGA in the remineralization solutions provided a better result of the remineralization repair for the enamel surface of teeth erosion. In addition, design of experiment (DOE) andanalysis of variance(ANOVA)are applied to analyze the significance of the control factors.The ratio of Nano HA and γ-PGA, mixing method, and the different immersed time with the remineralization solutions in the surface of teeth would be analyzed.