Bleaching of stained resin using nitrogen doped-TiO2 nanoparticles

서지정보

· 발행기관 : 대한치과재료학회
· 수록지 정보 : 대한치과재료학회지 / 46권 / 3호 / 175 ~ 184페이지
· 저자명 : 문근, 정상봉, 설효정, 강정숙, 권용훈

초록

There has been increasing use of the H2O2-based teeth bleaching agents. The purpose of this study was to evaluate thebleaching effectiveness of the laser irradiation combined with nitrogen doped-TiO2 nanoparticles (NPs) on the stained resin.
Nitrogen (N) doped-TiO2 NPs were prepared under sol-gel method. Light absorbance, X-ray diffraction patterns of NPs, andbleaching of methylene blue and stained resins were evaluated. For bleaching of stained resin, NPs-containing gel was used.
For irradiation, light of two different wavelengths was used. Unlike TiO2, N-TiO2 showed high absorbance after 400 nm.
N-TiO2, which have used TiN as a precursor, showed a new rutile phase at the TiN structure. For methylene blue solution,N-TiO2 with 3% H2O2 resulted in the greatest absorbance decrease after laser irradiation regardless of wavelength. For stainedresin test, N-TiO2 with 3% H2O2 resulted in the greatest color difference after laser irradiation, followed by group that usedN-TiO2 without 3% H2O2.

참고자료

· 없음