Mineral densities and elemental content in different layers of healthy human enamel with varying teeth age

He, Bing; Huang, Shengbin; Zhang, Chaoliang; Jing, Junjun; Hao, Yuqing; Xiao, Liying; Zhou, Xuedong

doi:10.1016/j.archoralbio.2011.02.015

Cited by 58 publications

(51 citation statements)

References 27 publications

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“…The differences in the Ba concentration in mineralized tissues of deciduous teeth have been defined by a statistically insignificant correlation coefficient (r=−0.39). The lowering of the level of elements' concentration, mainly trace elements (Cr, Cu, Pb, Cd) in deciduous teeth with increasing age of the surveyed children, was already observed in previous own studies [23] and other authors' study [24]. The results of literature research also show that the level of Ba in the body among children increases with the introduction of nutrients that complement breast-feeding [7].…”

Section: Discussionsupporting

confidence: 66%

The Study of Barium Concentration in Deciduous Teeth, Impacted Teeth, and Facial Bones of Polish Residents

Fischer

Malara

Wiechuła

2014

Biol Trace Elem Res

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The study determines the concentration of Ba in mineralized tissues of deciduous teeth, permanent impacted teeth, and facial bones. The study covers the population of children and adults (aged 6-78) living in an industrial area of Poland. Teeth were analyzed in whole, with no division into dentine and enamel. Facial bones and teeth were subjected to the following preparation: washing, drying, grinding in a porcelain mortar, sample weighing (about 0.2 g), and microwave mineralization with spectrally pure nitric acid. The aim of the study was to determinate the concentration of Ba in deciduous teeth, impacted permanent teeth, and facial bones. The concentration of barium in samples was determined over the ICP OES method. The Ba concentration in the tested bone tissues amounted to 2.2-15.5 μg/g (6.6 μg/g ± 3.9). The highest concentration of Ba was present in deciduous teeth (10.5 μg/g), followed by facial bones (5.2 μg/g), and impacted teeth (4.3 μg/g) (ANOVA Kruskal-Wallis rank test, p = 0.0002). In bone tissue and impacted teeth, Ba concentration increased with age. In deciduous teeth, the level of Ba decreased with children's age.

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Section: Discussionsupporting

confidence: 66%

The Study of Barium Concentration in Deciduous Teeth, Impacted Teeth, and Facial Bones of Polish Residents

Fischer

Malara

Wiechuła

2014

Biol Trace Elem Res

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“…The rate of solubility and dissolution in enamel was also increased from the surface to the DEJ because of its mineral gradient 11) . The calcium and phosphate ratio was increased at the enamel surface compared with the subsurface 8,24) . The increased dissolution rate in cut enamel is likely to be due to the lack of a more highly mineralized layer and lesser amount of fluorapatite.…”

Section: Discussionmentioning

confidence: 86%

“…To our knowledge, this is the first laboratory report on the superficial enamel hardness of uncut human enamel samples. Increased surface hardness values in the uncut samples could be due to the increased mineral content, and density caused by post eruptive maturation in the enamel surface compared with the subsurface enamel 24,[27][28][29] . These hardness results suggested the importance of the superficial enamel layer of natural (uncut) enamel and is an important layer to resist acidic challenge, either that from erosive changes or caries.…”

Section: Discussionmentioning

confidence: 99%

A comparative study of the susceptibility of cut and uncut enamel to erosive demineralization

et al. 2017

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This study aimed to evaluate the susceptibility of cut and uncut enamel surfaces to an erosive challenge and to examine the resultant characteristics/morphological changes. Ten extracted human incisors were used for preparation of enamel samples, and samples were immersed in citric acid. After 3 (total 3 min) and 6 cycles (total 6 min) of erosive challenges, surface loss (SL) and morphological changes were measured using scanning microscopy and FIB-TEM. Ca release (CA) and surface hardness (SH) were measured using a calcium-sensitive electrode and hardness tester respectively. Mean values of all measurements were statistically analyzed by using a t-test. Uncut enamel samples had significantly lower SL and greater SH than cut enamel (p<0.01). Cut enamel samples after 3 cycles showed higher CA compared with those from uncut enamel samples (p<0.05). Cut enamel was shown to be more susceptible to acidic dissolution and deeper acid penetration than uncut enamel after erosive demineralization.

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“…With age, the pores diminish as the crystals acquire more ions and as the surface increases in size. 21 In the recent researches, 30 it is found that the mineral density, as well, calcium, and phosphorus weight percent decreases from the outer to the inner enamel layers in the young or the old age groups. Moreover, the differences these properties between the two age groups are significantly different only in the outer enamel layer.…”

Section: Resultsmentioning

confidence: 98%

In vitro thermal diffusivity measurements as aging process study in human tooth hard tissues

Carvalho¹,

Dias²,

Bedeschi³

et al. 2013

Journal of Applied Physics

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Mineral densities and elemental content in different layers of healthy human enamel with varying teeth age

Cited by 58 publications

References 27 publications

The Study of Barium Concentration in Deciduous Teeth, Impacted Teeth, and Facial Bones of Polish Residents

The Study of Barium Concentration in Deciduous Teeth, Impacted Teeth, and Facial Bones of Polish Residents

A comparative study of the susceptibility of cut and uncut enamel to erosive demineralization

In vitro thermal diffusivity measurements as aging process study in human tooth hard tissues

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