Microstructure and mineral composition of dental enamel of permanent and deciduous teeth

Oliveira, Maria AngÃ©lica Hueb De Menezes; Torres, Carolina Paes; Gomes-Silva, Jaciara Miranda; Chinelatti, Michelle Alexandra; Menezes, Fernando Carlos Hueb de; Palma-Dibb, Regina Guenka; Borsatto, Maria Cristina

doi:10.1002/jemt.20796

Cited by 149 publications

(123 citation statements)

References 21 publications

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“…Thus, the complex three-dimensional (3D) organization of the hard tissues from the nanometer to the macroscopic scales confers such outstanding mechanical properties upon tooth structure. The complex structure of human teeth [28][29][30][31][32] facilitates the preservation of hardness and wear resistance over many millions of masticatory cycles. Besides the microscopic structure, investigations of the nanostructure have been performed, mainly with local probe techniques including atomic force microscopy (AFM) and scanning electron microscopy (SEM) [22,[33][34][35][36].…”

Section: Introductionmentioning

confidence: 99%

Understanding Nano-Anatomy of Healthy and Carious Human Teeth: a Prerequisite for Nanodentistry

et al. 2012

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The anatomy of human teeth reflects its usage. Spatially resolved X-ray scattering permits quantitative studies of the characteristic arrangement of the anisotropic calcium phosphate crystallites and the collagen fibers within the hard tissues of the crown. The present study summarizes the distinctive nanometer-sized anatomical features of the tooth hard tissues including their interface taking advantage of spatially resolved synchrotron radiation-based small-angle X-ray scattering. The comparison of slices from eight teeth indicates a long-range organization of tooth nanostructures.

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Section: Introductionmentioning

confidence: 99%

Understanding Nano-Anatomy of Healthy and Carious Human Teeth: a Prerequisite for Nanodentistry

et al. 2012

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“…They found the Calcium/Phosphorous ratio to be significantly lower in the teeth of the children affected by CD 20 . The decrease in Calcium/Phosphorous ratio could be explained by the incorporation of carbonate in the tissue structure, which would increase its solubility 21 . The presence of CD when the permanent teeth are developing is a risk factor for DED's 12 .…”

Section: Clinical Presentationmentioning

confidence: 99%

Coeliac disease in children – an update for general dental practitioners

et al. 2016

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Coeliac disease (CD) is an immune-mediated systemic disorder caused by ingestion of gluten found in wheat, rye and barley. It affects around 1% of children but 90% of cases are considered to remain undiagnosed. CD classically presents with gastrointestinal manifestations including diarrhoea, bloating, weight loss and abdominal pain, but extra-intestinal features (including oral and dental manifestations) are increasingly being reported. Dental and oral manifestations such as dental enamel defects, delayed eruption of teeth, recurrent aphthous ulcers are well recognized manifestations of CD. In patients with yet undiagnosed CD, these can sometimes be the only presenting features. Dentists have regular contact with well children, and therefore the visit to the dentist is an opportunity to suspect CD. When CD is suspected, Dental practitioners can liaise with the General Medical Practitioner to organise screening for coeliac disease. Positive serology will prompt onward referral to a paediatric gastroenterologist to confirm the diagnosis. The recent European Paediatric Gastroenterology Hepatology and Nutrition (ESPGHAN) guidelines have streamlined the diagnostic pathway for faster diagnosis of CD. Management involves strict adherence to a gluten free diet, which should lead to resolution of symptoms, recovery of intestinal mucosa and prevention of long-term complications associated with it. This article aims to describe CD, inform of recent changes to the diagnostic pathway and highlight the dental manifestations of the condition to equip Dental practitioners to aid early diagnosis and initiation of treatment for children with CD.

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“…Изменение минерального состава эмали и дентина может привести к различным нарушениям обменных процес-сов, снижению (редукции) резистентности и возникновению кариеса [3][4][5]7].…”

Section: влияние фторированно-йодированной соли на минеральный составunclassified

Influence of fluorinated and iodized salt on mineral composition of deciduous teeth formed in biogeochemical deficiency of fluoride and iodide

et al. 2016

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Aim. To study the content of Ca, P, F and I in enamel and dentin composition of deciduous teeth, which are formed in fluoride and iodide deficiency, and its dynamics on the background of the 3-year consumption of fluorinated and iodized salt.Methods. The mineral composition of the deciduous teeth enamel and dentin of 6-12 years old children, born and living in conditions of biogeochemical deficiency of fluoride (0.02-0.08 ppm F in water) and iodide (0.033-0.005 ppm I in water) before and after consumption of fluorinated and iodized salt containing sodium fluoride 300±50 ppm F and potassium iodate 40±10 ppm I was studied. The first phase of the study was conducted before inclusion of fluorinated-iodized salt in the diet of schoolchildren. Using X-ray microanalysis, macro- and microelements of 47 intact deciduous teeth were studied. The contents of the four elements (Ca, P, F, and I) in three layers of enamel (the surface layer, intermediate layer, at the enamel-dentin border) and in three layers of the dentine (the layer at the enamel-dentin border, a middle layer, circumpulpal layer). The second phase of a study on the mineral composition of the enamel and dentin was conducted 3 years after the beginning of fluorinated and iodized salt consumption. 51 deciduous intact tooth were investigated.Results. 3-year consumption of table salt with the addition of sodium fluoride and potassium iodate has led to a significant increase in calcium, phosphorus in the enamel of the all teeth groups. The highest content of fluorine was registered in the molars where the level of fluorine increased by 2.08 times from baseline. The fluorine level in canines increased by 1.76 times from baseline, in incisors - by 1.69 times. The iodine content in the enamel increased approximately 2-fold (incisors - 1.77 times, canines - 1.89 times, molars - 1.85 times), in the dentin, depending on the teeth groups, increase in the studied parameter was by 3.12-3.51 times.Conclusion. 3-year consumption of fluorinated and iodized salt containing sodium fluoride 300±50 ppm F and potassium iodate 40±10 ppm I stimulates increasing the content of Ca, P, F and I in the enamel and the dentin of deciduous teeth formed in fluoride and iodide deficiency.

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Microstructure and mineral composition of dental enamel of permanent and deciduous teeth

Abstract: The primary enamel structure showed a lower level of Ca and P, thinner thickness and higher numerical density of rods.

Cited by 149 publications

References 21 publications

Understanding Nano-Anatomy of Healthy and Carious Human Teeth: a Prerequisite for Nanodentistry

Understanding Nano-Anatomy of Healthy and Carious Human Teeth: a Prerequisite for Nanodentistry

Coeliac disease in children – an update for general dental practitioners

Influence of fluorinated and iodized salt on mineral composition of deciduous teeth formed in biogeochemical deficiency of fluoride and iodide

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