MICROHARDNESS OF TOOTH ENAMEL WITH DIFFERENT LEVEL OF RESISTANCE
This study about the microhardness of tooth enamel is evaluated by nanoidentation. The data indicate that the average microhardness of the enamel of the permanent teeth in the region of the equator is 5,75±0,06 Gpa, modulus of elasticity - 97,72±0,74 GPa on average data. It was revealed difference i...
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Ukrainian Medical Stomatological Academy
2017-03-01
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doaj-46d87ab1f4c94a968c23dc9811a3ce1c2020-11-25T00:29:58ZengUkrainian Medical Stomatological Academy Український стоматологічний альманах2409-02552410-14272017-03-01359272MICROHARDNESS OF TOOTH ENAMEL WITH DIFFERENT LEVEL OF RESISTANCEN.L. Chukhray0V.A. Vynar1Danylo Halytskiy Lviv National Medical UniversityPhysics and Mechanics Institute by G.V. Karpenko of National Academy of Sciences of UkraineThis study about the microhardness of tooth enamel is evaluated by nanoidentation. The data indicate that the average microhardness of the enamel of the permanent teeth in the region of the equator is 5,75±0,06 Gpa, modulus of elasticity - 97,72±0,74 GPa on average data. It was revealed difference in indices of enamel microhardness, depending on the level of its enamel. Microhardness cariesresistant enamel of the permanent teeth is 7,85±0,10 GPa, which is higher than the corresponding mean for microhardness of relatively resistant enamel 6,45±0,06 GPa and significantly higher than caries susceptible enamel (2,95±0,22 GPa ). The relationship between enamel resistances with microhardness of its superfacial layers is showed. The highest mean of elasticity was found in samples of teeth with enamel resistant to dental caries (119,77±1,30 GPa), which is on 10,54% and 44,67% higher compared with the value of the index in samples of tooth with conditionally resistant and caries susceptible enamel. The received data make it possible to assume that the modulus of elasticity of enamel of permanent teeth also depends on the enamel resistance. Therefore, in order to prevent the injuring of hard tissues of caries susceptible enamel is advisable to appoint mineralizing means that can increase the microhardness (caries resistance) of teeth.https://dental-almanac.org/index.php/journal/article/view/272enamel microhardness, resistance, permanent teeth. |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
N.L. Chukhray V.A. Vynar |
spellingShingle |
N.L. Chukhray V.A. Vynar MICROHARDNESS OF TOOTH ENAMEL WITH DIFFERENT LEVEL OF RESISTANCE Український стоматологічний альманах enamel microhardness, resistance, permanent teeth. |
author_facet |
N.L. Chukhray V.A. Vynar |
author_sort |
N.L. Chukhray |
title |
MICROHARDNESS OF TOOTH ENAMEL WITH DIFFERENT LEVEL OF RESISTANCE |
title_short |
MICROHARDNESS OF TOOTH ENAMEL WITH DIFFERENT LEVEL OF RESISTANCE |
title_full |
MICROHARDNESS OF TOOTH ENAMEL WITH DIFFERENT LEVEL OF RESISTANCE |
title_fullStr |
MICROHARDNESS OF TOOTH ENAMEL WITH DIFFERENT LEVEL OF RESISTANCE |
title_full_unstemmed |
MICROHARDNESS OF TOOTH ENAMEL WITH DIFFERENT LEVEL OF RESISTANCE |
title_sort |
microhardness of tooth enamel with different level of resistance |
publisher |
Ukrainian Medical Stomatological Academy |
series |
Український стоматологічний альманах |
issn |
2409-0255 2410-1427 |
publishDate |
2017-03-01 |
description |
This study about the microhardness of tooth enamel is evaluated by nanoidentation. The data indicate that the average microhardness of the enamel of the permanent teeth in the region of the equator is 5,75±0,06 Gpa, modulus of elasticity - 97,72±0,74 GPa on average data. It was revealed difference in indices of enamel microhardness, depending on the level of its enamel. Microhardness cariesresistant enamel of the permanent teeth is 7,85±0,10 GPa, which is higher than the corresponding mean for microhardness of relatively resistant enamel 6,45±0,06 GPa and significantly higher than caries susceptible enamel (2,95±0,22 GPa ). The relationship between enamel resistances with microhardness of its superfacial layers is showed. The highest mean of elasticity was found in samples of teeth with enamel resistant to dental caries (119,77±1,30 GPa), which is on 10,54% and 44,67% higher compared with the value of the index in samples of tooth with conditionally resistant and caries susceptible enamel.
The received data make it possible to assume that the modulus of elasticity of enamel of permanent teeth also depends on the enamel resistance. Therefore, in order to prevent the injuring of hard tissues of caries susceptible enamel is advisable to appoint mineralizing means that can increase the microhardness (caries resistance) of teeth. |
topic |
enamel microhardness, resistance, permanent teeth. |
url |
https://dental-almanac.org/index.php/journal/article/view/272 |
work_keys_str_mv |
AT nlchukhray microhardnessoftoothenamelwithdifferentlevelofresistance AT vavynar microhardnessoftoothenamelwithdifferentlevelofresistance |
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1725328818997035008 |