Second Order Differentiation Analysis of Micro FTIR Method Revealed the Variable Erosion Characteristics of Carbonated Soft Drink for the Individual Human Teeth Enamel

Kôno, Tetsuro; Watanabe, Akira; Kanno, Takeshi; Ootani, Yukari; Tamamura, Ryo; Tanaka, Sakae; Okada, Hiroyuki

doi:10.2485/jhtb.28.7

Cited by 6 publications

(8 citation statements)

References 32 publications

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“…In this study, we could not prove the existence of β-TCP because we did not use Xray diffraction system, but we observed the changes caused by the substitution of the compound using a micro -FTIR instrument. which is thought to affect the crystal size (12) . According to the study of Holcomb et al (7) , pyrophosphoric acid is formed in parallel with the decomposition of HPO 4 2when heated above 500°C.…”

Section: Discussionmentioning

confidence: 99%

Analysis of Heated Enamel Using Micro-FTIR

et al. 2022

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In this study, human enamel was heated and analyzed using a micro -FTIR instrument to clarify the individual differences in the components of human enamel biological apatite crystals. Teeth were cut longitudinally into thin slices at intervals of approximately 0.5 mm, from which a central piece was selected, and only the enamel was powdered using a mortar. A portion of the powder was suspended in water, spread on Low -E glass slides, airdried, and analyzed by a micro -FTIR instrument. The remaining powders were then heat treated and analyzed again by a micro -FTIR instrument.As a result, the analysis pattern before heating showed the common enamel pattern reported by many authors, but the peak values of some absorption bands were different in the samples. Conversely, the analysis pattern after heating indicated several peaks that were not present in the absorption band before heating, and more detailed differences in peak values were observed. After the heating, the PO 4 3absorption band revealed the peak, and the shift of the peak cloud be attributed to the subdivision compared to that before heating. The PO 4 3absorption band, is used to evaluate hydroxyapatite crystallinity, and changes in this band indicate changes in the crystallinity of hydroxyapatite. The CO 3 2absorption bands showed many peak values attributed to B -CO 3 2in the sample before and A -CO 3 2after heating. In conclusion, the enamel of individual specimens clearly indicated characteristic differences, indicating enamel diversity.

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Section: Discussionmentioning

confidence: 99%

Analysis of Heated Enamel Using Micro-FTIR

et al. 2022

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“…According to the peak values shown in Fig. 4; 3296, peaks in the band range of 2921 cm -1 (Ehrman et al, 1999;Jenkins et al, 2005a;Jenkins and Eagar, 2005b;Wang et al, 2006;Chen and He, 2008;Sowards et al, 2008;Sevilla and Fuertes, 2009;Gibot and Vidal, 2010;Saikia and Parthasarathy, 2010;Zheng et al, 2010;Vaculikova et al, 2011;Basu et al, 2011;Farzaneh and Najafi, 2011;Lin et al, 2012;Abdullah et al, 2014;Jamal et al, 2014;Golbabaei and Khadem, 2015;Naushad et al, 2015;Diko et al, 2016; Sahai et al, 2016;Benykhlef et al, 2016;Yi et al, 2018;Ge et al, 2019;Habtemariam et al, 2019;Bahah et al, 2019;Abinaya et al, 2019;Alias et al, 2019;Altunal et al, 2019;Boroń et al, 2019;Reddy et al, 2019;Karthik et al, 2019;Karunathilaka et al, 2019;Kono et al, 2019;Mohammadi et al, 2019;Ponmudi et al2019;Scaccia et al, 2019;Wang et al, 2019a;Wang et al, 2019b;Yang et al, 2019), indicate O-H bonding i...…”

Section: Characterization By Ftirmentioning

confidence: 99%

“…Welding fumes contain very different structures by its nature. 1139, 1257, 1407, 2848 and 2921 cm -1 peaks obtained from FTIR analysis were Al-O (Jamal et al, 2014;Benykhlef et al, 2016;Yi et al, 2018) (Abdullah et al, 2014;Golbabaei and Khadem, 2015), F 2 O 3 (Oberdörster et al, 2005), Mn-O (Jamal et al, 2014;Alias et al, 2019), N-O (Boroń et al, 2019;Yang et al, 2019), P-O (Kono et al, 2019), Pd-O (Reddy et al, 2019), Si-O (Saikia and Parthasarathy, 2010;Vaculikova et al, 2011;Diko et al, 2016;Bahah et al, 2019;Mohammadi et al, 2019) functional due to the fact that stretching of bonds of functional groups has increased.…”

Section: Characterization By Ftirmentioning

confidence: 99%

Análisis de la microestructura de humos de soldadura de aceros de bajo y medio contenido de carbon

Güney

2021

revmetal

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En este estudio, la muestra de humo de soldadura se obtuvo a partir de aceros de bajo y medio carbono y los electrodos utilizados en la soldadura. Las microestructuras de las partículas se analizaron mediante microscopía electrónica de barrido (SEM), espectrómetro de dispersión de energía (EDS), difractómetro de rayos X (XRD) y espectrómetro de infrarrojos por transformada de Fourier (FTIR). En los experimentos se encontró que los elementos Be, O, F, Fe, Si, Cl, K, Ca, Ti, V, Cr, Mn tenían contenidos atómicos superiores al 1%. Con base en este hallazgo, se revela que la estructura está constituida principalmente por óxidos tipos Fe2O3, Fe3O4, MnO2, TiO2, SiO2, Fe3Mn3O8, FeMn2O4, BeO, CrO. También se encontró mediante análisis XRD que los elementos con contenidos inferiores al 1% atómico se encontraban también asociados a fases en forma de óxidos. Debido a que las estructuras oxidadas amenazan el medio ambiente y la salud humana, se ha descubierto experimentalmente que los metales emitidos por los humos de soldadura siguen contaminando y amenazando el medio ambiente.

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“…Artificial caries production was performed using the carbonated soft drink Sprite ® (Coca-Cola [Japan] Co. Ltd., Tokyo, Japan), and the durations of control, 1 day, and 7 days were fixed, as suggested by previous studies 1,2) . Twenty human third molar teeth used in this study were extracted for clinical reasons and pooled in purified water.…”

Section: Humantooth Samplesmentioning

confidence: 99%

“…From studies on human tooth enamel caries, it could be inferred that the appearances of native enamel caries and artificial carious lesions are determined by their diversities in original structural and physico-chemical properties 1,2) . Although the enamel crystallites revealed similarities to hydroxyapatite in electron diffraction and X-ray diffraction (XRD), our studies also revealed significant differences between the enamel mineral and pure hydroxyapatite [3][4][5][6] .…”

Section: Introductionmentioning

confidence: 99%

Carbonated Soft Drink-Soaking Change the Crystallographic Properties of Human Tooth Enamel -A Micro-XRD Study

Kôno

Watanabe

Kanno

et al. 2019

J. Hard Tissue Biology.

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To elucidate the crystallo-chemical reaction between the enamel and carbonated soft drink, a micro-X-ray diffraction analysis (micro-XRD) was conducted using the human tooth sections soaked in the drink (Sprite ®) for 1 and 7 days. In this study, 4 typically and heavily dissolved teeth were selected from 20 teeth, and the divergence of the crystallographic properties of the enamel was analyzed. All of the untreated human tooth enamels exhibited only the apatitic XRD patterns. We confirmed that the carbonated soft drink changed the macro-and microscopic morphological features of individual tooth enamel. The following 4 results were obtained from our study: i) the unit cell dimensions and crystallinity of the untreated enamel apatite varied between the layers and the individual teeth; ii) after the soaking experiment, the crystallographic properties of the enamels changed remarkably and displayed non-uniformity; iii) no relationship was discerned between the enamel's crystallographic properties and the sensitivity of the carious attack; and iv) the intermediate reaction product of soaking was uncovered; however, it was not identified at this time. The presence or absence of occurrence and variations in the amount of intermediate product reflected the complex chemical and crystallo-chemical reactions between the decalcification solution and the human tooth enamel crystallites. We clearly established that the untreated human tooth enamels differed in their crystallographic properties and did not react in the same manner, which resulted in varied apatitic structures after soaking. These results necessitate reconsideration of the generally accepted caries protection methods that are applied as common standards for all individuals and tooth enamels.

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Second Order Differentiation Analysis of Micro FTIR Method Revealed the Variable Erosion Characteristics of Carbonated Soft Drink for the Individual Human Teeth Enamel

Cited by 6 publications

References 32 publications

Analysis of Heated Enamel Using Micro-FTIR

Analysis of Heated Enamel Using Micro-FTIR

Análisis de la microestructura de humos de soldadura de aceros de bajo y medio contenido de carbon

Carbonated Soft Drink-Soaking Change the Crystallographic Properties of Human Tooth Enamel -A Micro-XRD Study

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