Bioglass/Chitosan/Silver nanoparticle synthesis and their application to bioactive surface modification

2018 Fiscal Year Final Research Report

• Project/Area Number: 16K11794
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Orthodontics/Pediatric dentistry
• Research Institution: Health Sciences University of Hokkaido
• Principal Investigator: IIJIMA MASAHIRO 北海道医療大学, 歯学部, 教授 (20305915)
• Co-Investigator(Kenkyū-buntansha): 六車 武史 北海道医療大学, 歯学部, 講師 (20343436)
• Project Period (FY): 2016-04-01 – 2019-03-31
• Keywords: バイオアクティブガラス / 再石灰化

Outline of Final Research Achievements

This study investigated the surface modification of orthodontic stainless steel using electrophoretic deposition (EPD) of bioactive glass (BG). The EPD process using alternating current produced higher values in both reflectance and lightness. Additionally, the BG coating was thinner than that prepared using direct current, and was completely amorphous. All of the BG coatings displayed good interfacial adhesion, and Si and O were the major components. The hardness and elastic modulus of etched enamel specimens immersed with most BG-coated specimens recovered significantly with increasing immersion time compared with the non-coated specimen. The surface modification technique using EPD and BG coating on orthodontic stainless steel may assist the development of new non-cytotoxic orthodontic metallic appliances having satisfactory appearance and remineralization ability.

Free Research Field

歯科矯正学

Academic Significance and Societal Importance of the Research Achievements

固定式の装置を使用した矯正治療では、低い審美性やう蝕の誘発という問題がある。本研究では、高い生体活性を有するバイオガラスを利用した金属材料の表面改質が、歯の再石灰化能とう蝕抑制機能を有する審美性矯正用材料に応用可能であることを明らかとした。