Study of the morphological structure of enamel and correlation of its chemical composition with dentin in intact teeth and with a cervical pathology

Zabolotna, I. I.

doi:10.5114/jos.2021.104691

Cited by 4 publications

(5 citation statements)

References 10 publications

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“…Correlation between the chemical composition of enamel and dentin (magnesium and calcium, magnesium and phosphorus) that was described in a previously published work 10 probably explains the revealed strong direct correlation between the molar coefficients of Mg/P and Mg/Ca in enamel and dentin. Obtained results confirm a certain role of Mg concentrations not only in the dentalenamel junction (according to Kuczumow А. et al (2021)) 21 but also in the entire thickness of hard tissues.…”

Section: Discussionsupporting

confidence: 65%

The Indicators of Molar Coefficients of the Chemical Elements in Dentin and their Correlation with Enamel

Zabolotna

Genzytska

ZABOLOTNYI

2023

Cumhuriyet Dental Journal

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Objectives:Determination of molar coefficients of the chemical elements in dentin, their possible correlation with tooth enamel. Material and Methods:There were examined 29 clinically extracted teeth of both jaws and their longitudinal sections (12 clinically intact teeth, 10 teeth with wedge-shaped defects, 7 teeth with cervical caries) of the patients aged 25to 54 with the help of JSM-6490 LV focused beam electron microscope (scanning) with system of energy-dispersive X-ray microanalysis. We have determined the chemical composition of 290 enamel areas and 235 dentine areas in the incisal region (tubercle), equator, cervical area as a percentage of the weight amounts of carbon, oxygen, calcium, phosphorus, sodium, magnesium, sulfur, chlorine, zinc, potassium, aluminum, we have identified their molar coefficients. Results: The chemical composition of dentin differed in the values of Na/Mg, Al/Zn, Mg/Ca, K/Na (p≤0.05) in all studied topographical regions of the samples. Higher values of Na/Mg and lower values of Al/Zn were identified in the teeth with cervical caries (p≤0.05). Correlation was found in dentin: inverse between Ca/P and P/Ca, Mg/Ca and Na/Mg, Ca/Mg and Mg/Ca, Mg/P and Na/Mg, Mg/P and Ca/Mg, direct between Ca/Mg and Na/Mg, Mg/P and Mg/Ca (p≤0.05). High correlation was determined between molar coefficients in enamel and dentin: Mg/Ca and Mg/P (direct), Ca/P and P/Ca (inverse), p<0.0001. Conclusions:The differences in the indicators of molar coefficients in dentin, their correlation with enamel are probably associated with the peculiarities of the pathological processes in the cervical region and it requires further study.

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Section: Discussionsupporting

confidence: 65%

The Indicators of Molar Coefficients of the Chemical Elements in Dentin and their Correlation with Enamel

Zabolotna

Genzytska

ZABOLOTNYI

2023

Cumhuriyet Dental Journal

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“…Було визначено, що кількість Na + в емалі достовірно відрізнялась залежно від глибини мікротріщин на вестибулярній поверхні зубів [12]. Тріщини, імовірно, є результатом абфракції, яку вважають більшість дослідників причиною некаріозних пришийкових уражень зубів [16]. Показники К/Na ротової рідини осіб з каріозним процесом та інтактними твердими тканинами відрізнялись на 68,3%.…”

Section: результати обговоренняunclassified

“…1). Крім того, у попередніх дослідженнях був визначений зворотний кореляційний зв'язок між Na + і Са 2+ в усіх анатомічних ділянках, прямий кореляційний зв'язок -між Na + і Clу пришийковій області зубів, де була діагностована пришийкова патологія [16]. Після аналізу отриманих результатів вважали за можливе використання Са/Cl-коефіцієнту у сукупності з К/Na-коефіцієнтом ротової рідини при розробці способу прогнозування виникнення пришийкової патології твердих тканин зубів.…”

Section: результати обговоренняunclassified

Method for predicting the development of cervical caries and teeth with wedge-shaped defect in young people

Zabolotna¹

2021

Rep. of Vinnytsia Nation. Med. Univ.

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Annotation. Significant prevalence of cervical caries and teeth with wedge-shaped defect is the reason for the search for ways to predict their development that is possible only with an individual approach. The purpose of the study is to design and test the method for predicting the development of cervical caries and teeth with wedge-shaped defect in young people based on the results of determining the chemical composition of enamel, dentin and oral fluid. The chemical composition of the enamel and dentin of 29 teeth was examined using JSM-6490 LV focused beam electron microscope (scanning). We determined the content of the chemical elements in the oral fluid of 33 patients: Сa2+, РО43-, SO42 - by spectrophotometric method, Na+, К+, Al3+ by atomic emission spectrometry, Mg2+, Zn2+ by atomic absorption spectrometry, Cl- using chloride selective electrode of pH meter. Statistical analysis was performed using the computer program Statistica 8.0 (STA862D175437Q). Analysis of variance (Welch test), Pearson's parametric correlation method (Brave-Pearson coefficient (r)) was used. The reliability of the obtained results was evaluated by Student's t-test, the correlation between the indicators – by Student's test using the Z-test (Fisher's z-test) at p≤0.05. It was determined that the values of the К/Na+Са/Сl coefficient in enamel (equator, cervical region), dentin (cervical region), oral fluid significantly differed depending on the state of hard dental tissues (p≤0.05). Direct correlation of moderate and high strength was revealed between Са/Р and К/Na+Са/Сl – coefficients in cervical enamel and saliva (p≤0.0001). Obtained results became the basis for the development of the method for individual prediction of the development of cervical pathology in young people. Its approbation was carried out in 43 patients, its effectiveness was assessed a year later. With the values of the К/Na+Са/Сl 2 coefficient and lower we diagnosed the absence of the risk of developing cervical caries and wedge-shaped defect, from 2.1 to 5.3 the risk of developing cervical caries was diagnosed, from 5.4 and more the risk of developing wedge-shaped defect was found out. It was confirmed that the proposed method is informative (the prediction accuracy reaches 83,7%), its non-invasiveness is the basis for widespread use. We consider the search for the ways to predict particularly the development of teeth cervical pathology based on the parameters of the oral fluid and dental biofilm to be promising.

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“…Irreversible structural defects that are located in the cervical area at the level of the enamel-cement junction on the buccal/labial surface of the teeth are named non-carious cervical lesions (NCCLs) [4]. In the area of the enamelcementum junction, the enamel prisms have a horizontal orientation [5]. The volume and composition of enamel and dentin contribute to the development of NCCLs [6].…”

Section: Introductionmentioning

confidence: 99%

The Stresses and Deformations in the Abfraction Lesions of the Lower Premolars Studied by the Finite Element Analyses: Case Report and Review of Literature

Costăchel,

Bechir,

Târcolea

et al. 2024

Diagnostics

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Background: The purpose of the study was to investigate the behavior of hard dental structures of the teeth with abfraction lesions when experimental occlusal loads were applied. Methods: A 65-year-old patient came to the dentist because she had painful sensitivity in the temporomandibular joints and the lower right premolars. The patient was examined, and cone-beam computed tomography (CBCT) of the orofacial area was indicated. The data provided from the CBCT were processed with Mimics Innovation Suite 17 software to create the desired anatomical area in 3D format. Then, the structural calculation module was used in order to perform a finite element analysis of the lower right premolar teeth. A focused review of articles published between 2014 and 2023 from specialty literature regarding the FEA of premolars with abfraction lesions was also conducted. Results: The parcel area and the cervical third of the analyzed premolars proved to be the most vulnerable areas under the inclined direction of occlusal loads. The inclined application of experimental loads induced 3–4 times higher maximum shears, stresses, and deformations than the axial application of the same forces. Conclusions: FEA can be used to identify structural deficiencies in teeth with abfractions, a fact that is particularly important during dental treatments to correct occlusal imbalances.

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Study of the morphological structure of enamel and correlation of its chemical composition with dentin in intact teeth and with a cervical pathology

Cited by 4 publications

References 10 publications

The Indicators of Molar Coefficients of the Chemical Elements in Dentin and their Correlation with Enamel

The Indicators of Molar Coefficients of the Chemical Elements in Dentin and their Correlation with Enamel

Method for predicting the development of cervical caries and teeth with wedge-shaped defect in young people

The Stresses and Deformations in the Abfraction Lesions of the Lower Premolars Studied by the Finite Element Analyses: Case Report and Review of Literature

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