Spectroscopic and microscopic examination of teeth exposed to green tea at different temperatures.

Autor: Manno SHC; Department of Biomedical Sciences, City University of Hong Kong, Hong Kong SAR, China.; State Key Laboratory of Marine Pollution (SKLMP), City University of Hong Kong, Hong Kong SAR, China.; Department of Physics, City University of Hong Kong, Hong Kong SAR, China., Manno FAM; Department of Biomedical Sciences, City University of Hong Kong, Hong Kong SAR, China.; Department of Physics, City University of Hong Kong, Hong Kong SAR, China., Tian L; Department of Biomedical Sciences, City University of Hong Kong, Hong Kong SAR, China.; State Key Laboratory of Marine Pollution (SKLMP), City University of Hong Kong, Hong Kong SAR, China., Khan MS; Department of Physics, City University of Hong Kong, Hong Kong SAR, China., Ahmed I; Department of Physics, City University of Hong Kong, Hong Kong SAR, China.; Department of Electrical Engineering, Sukkur IBA University, Sukkur, Sindh, Pakistan., Liu Y; Department of Physics, City University of Hong Kong, Hong Kong SAR, China., Li VWT; Department of Biomedical Sciences, City University of Hong Kong, Hong Kong SAR, China., Xu S; Department of Biomedical Sciences, City University of Hong Kong, Hong Kong SAR, China., Xie F; Department of Biomedical Sciences, City University of Hong Kong, Hong Kong SAR, China., Hung TF; Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong, Hong Kong SAR, China., Ma V; Department of Clinical Oncology, Queen Elizabeth Hospital, Hong Kong, Hong Kong SAR, China., Cho W; Department of Clinical Oncology, Queen Elizabeth Hospital, Hong Kong, Hong Kong SAR, China., Aldape B; División de Estudios de Posgrado e Investigación, Facultad de Odontología, Portal de la Universidad Nacional Autónoma de México, México, D.F., México., Cheng SH; Department of Biomedical Sciences, City University of Hong Kong, Hong Kong SAR, China.; State Key Laboratory of Marine Pollution (SKLMP), City University of Hong Kong, Hong Kong SAR, China.; Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong, Hong Kong SAR, China., Lau C; Department of Biomedical Sciences, City University of Hong Kong, Hong Kong SAR, China.
Jazyk: angličtina
Zdroj: PloS one [PLoS One] 2020 Dec 30; Vol. 15 (12), pp. e0244542. Date of Electronic Publication: 2020 Dec 30 (Print Publication: 2020).
DOI: 10.1371/journal.pone.0244542
Abstrakt: Tea is a popular beverage consumed at different temperatures. The effect of tea on teeth at different temperatures has not been studied previously. The present study used an in vitro green tea immersed tooth model at different tea temperatures (hot and cold) compared to an in vivo tea administration model allowing rats to drink tea over the course of a week. The elements present in tea leaves were identified by Inductively Coupled Plasma Mass Spectrometry (ICP-MS) and compared to the elements in teeth (enamel surface) using Laser-Induced Breakdown Spectroscopy (LIBS). Here, LIBS demonstrated in vivo and in vitro green tea treatments resulted in a significant increase in the mineral elements found in enamel. For the in vitro assessment, elements in enamel varied based on cold-tea and hot-tea treatment; however, hot water reduced the elements in enamel. Atomic force microscopy found the in vivo tea group had a higher roughness average (RA) compared with the in vivo water group. Cold tea and hot tea in vitro groups demonstrated lower RA than in vitro water controls. Scanning electron microscopy found hot water induced cracks more than 1.3μm in enamel while cold tea and hot tea promoted the adhering of extrinsic matter to teeth. Overall, teeth treated to high temperature lost the mineral phase leading to demineralization. Our results indicate that green tea protects enamel, but its protective action in dental structures is enhanced at cold temperature.
Competing Interests: The authors have declared that no competing interests exist.
Databáze: MEDLINE
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