The investigation of usage of fluorapatite mineral (Ca5F(PO4)3) in tooth enamel under the different pre-irradiation thermal treatments

Toktamiş, Hüseyin; Toktamış, Dilek; Yılmaz, Şerife; Yazici, A. Necmeddin; Yıldırım, Cihan; Özbiçki, Özlem

doi:10.1016/j.tca.2014.12.009

Cited by 8 publications

(7 citation statements)

References 22 publications

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“…It is performed to erase the effects of previous irradiation, minimize the background signals, increase the sensitivity of the dosimeter, and obtain the highest reproducibility [22]. Some researchers investigated the effects of annealing on the TL properties of natural dosimetric materials [9,[23][24][25][26]. They concluded that pre-irradiation annealing at higher temperatures causes a huge increase in sensitivity in a TL sample and best reproducibility.…”

Section: Discussionmentioning

confidence: 99%

Thermoluminescence properties of the rock naturally annealed for thousands of years by flames from the earth's inner layers

Toktamış

2023

Luminescence

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The gas leak in Chimaera near Çıralı, Antalya, has been active for thousands of years. It is also known to be the source of the first Olympic flame in the Hellenistic period. The sample taken from the Chimaere seepage annealed for thousands of years was determined to be calcite‐magnesian (Ca, Mg)O3. In this study, thermoluminescence (TL) properties of calcite‐magnesian annealed for thousands of years in the fire caused by methane gas were investigated for particle size, dose–response, heating rate, and fading experiments. It exhibits a clear TL glow curve with two distinct peaks positioned at 160 and 330°C, and its shape is not affected by variation in applied dose and reproduciility of experiment. There is a wide linear relationship between TL output and applied dose up to 614 Gy. Although the positions of the TL peaks are stable with the cycle of measurement, a poor reusability was observed in terms of the area under the TL glow curve and peak intensity.

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Section: Discussionmentioning

confidence: 99%

Thermoluminescence properties of the rock naturally annealed for thousands of years by flames from the earth's inner layers

Toktamış

2023

Luminescence

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“…The Investigation of Thermoluminescence Properties of Tooth… 298 different annealing temperatures with various annealing times and lanse fluorapatite mineral in tooth enamel exhibits TL properties. Annealing of the sample affects extremely the glow curve and causes a huge enhancement in the sensitization of TL peak [4]. Secu et al in other research the thermoluminescence response to gamma-ray irradiation of tooth enamel is reported.…”

Section: Introductionmentioning

confidence: 98%

“…According to studies tooth enamel is the hardest part of tooth and protects the dentine. In terms of composition, it consists of 95% inorganic minerals (fluorapatite and hydroxyapatite), 1% organic minerals and 3% water [1][2][3][4]. As mention above, the mineral components of enamel are fluorapatite [Ca 5 F(PO 4 ) 3 ] and hydroxyapatite [Ca 10 (PO 4 ) 6 (OH) 2 ].…”

Section: Introductionmentioning

confidence: 99%

Cilt: 3, No: 2, 2016

Katı

Kadiroğullari²,

Türemiş³

et al. 2016

El-Cezeri Fen Ve Mühendislik Dergisi

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In this study; Thermoluminescence(TL) properties of tooth enamel which was obtained from health teeth in the Faculty of Dentistry Ege University was investigated. The tooth enamel was exposed to X-ray and TL spectra were taken with different heating rates (β) (2-10 o C/s). It was observed that there is a broad TL peak approximately at 210 o C for tooth enamel in the range of 50-400 o C. The dependence of heating rate and exposed X-ray dose (dose response) of the 210 o C peak were investigated, as well as kinetic parameters were calculated using peak shape and heating rate methods for tooth enamel.

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“…As a result, each natural material's TL properties should be investigated separately. Quartz, [ 9,10 ] feldspars, [ 11 ] fluorite, [ 12,13 ] and calcite [ 14 ] are examples of natural minerals that exhibit the TL phenomena. Calcite is the natural mineral of focus in this investigation.…”

Section: Introductionmentioning

confidence: 99%

“…Quartz, [9,10] feldspars, [11] fluorite, [12,13] and calcite [14] are examples of natural minerals that exhibit the TL phenomena. Calcite is the natural mineral of focus in this investigation.…”

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confidence: 99%

Thermoluminescence characteristics of calcite with a Gaussian process regression model of machine learning

Işık

2022

Luminescence

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Thermoluminescence (TL) is defined as a luminescence phenomenon that can be detected when an insulator or semiconductor is thermally stimulated. Defective crystals store radiation until they are stimulated. Thermoluminescence is a method of monitoring the absorbed dose of dosimeters. The irradiation crystal is heated to 500°C to display the absorbed dose as a luminescent light. The TL dosimetric properties of calcite obtained from nature were investigated in this study. Machine learning was also examined using Gaussian process regression (GPR) for stimulated TL characteristics. According to the experimental output, the TL glow curve had two main peaks located at 90°C and 240°C with good dosimetric properties. In the four regression models of GPR, the data for the heating rate of 3°C s−1 have the lowest residual.

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The investigation of usage of fluorapatite mineral (Ca5F(PO4)3) in tooth enamel under the different pre-irradiation thermal treatments

Cited by 8 publications

References 22 publications

Thermoluminescence properties of the rock naturally annealed for thousands of years by flames from the earth's inner layers

Thermoluminescence properties of the rock naturally annealed for thousands of years by flames from the earth's inner layers

Cilt: 3, No: 2, 2016

Thermoluminescence characteristics of calcite with a Gaussian process regression model of machine learning

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