TY - JOUR
T1 - Improvement of acid resistance of Zn-doped dentin by newly generated chemical bonds
AU - Naito, Katsuaki
AU - Kuwahara, Yasutaka
AU - Yamamoto, Hiroko
AU - Matsuda, Yasuhiro
AU - Okuyama, Katsushi
AU - Ishimoto, Takuya
AU - Nakano, Takayoshi
AU - Yamashita, Hiromi
AU - Hayashi, Mikako
N1 - Publisher Copyright:
© 2022 The Author(s)
PY - 2022/3
Y1 - 2022/3
N2 - Dental caries, the world's most prevalent infectious disease, is caused by the diffusion of hydroxyl ions into tooth structures. To prevent dental caries, the application of fluoride (F) and zinc (Zn) ions to teeth surfaces are potential effective measures. In this study, The ionic influence, especially the chemical bond of F and Zn, on the acid resistance of dentin were investigated by particle induced X-ray / gamma-ray emission, X-ray diffraction, X-ray photoelectron spectroscopy and X-ray absorption spectroscopy. The results showed Zn was distributed in the limited surface layer of dentin without altering its crystal structure. From the Zn K edge extended X-ray absorption fine structure, Zn incorporated into dentin was surrounded by oxygen and demonstrated four-fold coordination. The bond length and chemical state of Zn–O in Zn doped dentin suggested newly generated Zn–O covalent bond, which may improve acid resistance of dentin. This study showed that the atomic and molecular structures, such as the molecular distances and chemical state, influenced acid resistance of teeth, emphasizing the validity of chemical state analysis for understanding properties in biomaterials.
AB - Dental caries, the world's most prevalent infectious disease, is caused by the diffusion of hydroxyl ions into tooth structures. To prevent dental caries, the application of fluoride (F) and zinc (Zn) ions to teeth surfaces are potential effective measures. In this study, The ionic influence, especially the chemical bond of F and Zn, on the acid resistance of dentin were investigated by particle induced X-ray / gamma-ray emission, X-ray diffraction, X-ray photoelectron spectroscopy and X-ray absorption spectroscopy. The results showed Zn was distributed in the limited surface layer of dentin without altering its crystal structure. From the Zn K edge extended X-ray absorption fine structure, Zn incorporated into dentin was surrounded by oxygen and demonstrated four-fold coordination. The bond length and chemical state of Zn–O in Zn doped dentin suggested newly generated Zn–O covalent bond, which may improve acid resistance of dentin. This study showed that the atomic and molecular structures, such as the molecular distances and chemical state, influenced acid resistance of teeth, emphasizing the validity of chemical state analysis for understanding properties in biomaterials.
KW - Chemical state
KW - Dental caries
KW - Dentin
KW - Fluoride
KW - X-ray absorption spectroscopy
KW - Zinc
UR - http://www.scopus.com/inward/record.url?scp=85123978413&partnerID=8YFLogxK
U2 - 10.1016/j.matdes.2022.110412
DO - 10.1016/j.matdes.2022.110412
M3 - 学術論文
AN - SCOPUS:85123978413
SN - 0264-1275
VL - 215
JO - Materials and Design
JF - Materials and Design
M1 - 110412
ER -
