The Influences of Dehydration on the Mechanical Properties of Human Dentin
| Autor: | Asad-Uz-Zaman, Mohammad Shafiqul Alam, Mohiuddin Ahmed, Refat Readul Islam, Pedro Álvarez-Lloret, Abu Faem Mohammad Almas Chowdhury, Monica Yamauti, Mohammad Musfiqur Rahman, Arefin Alam, Hidehiko Sano |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Molar
lcsh:QE351-399.2 Materials science ultimate tensile strength elastic modulus dentin 03 medical and health sciences 0302 clinical medicine stomatognathic system Ultimate tensile strength ComputingMilieux_COMPUTERSANDEDUCATION Dentin medicine Human dentin Dehydration Composite material Elastic modulus ComputingMilieux_MISCELLANEOUS 030304 developmental biology 0303 health sciences lcsh:Mineralogy Geology dehydration 030206 dentistry Geotechnical Engineering and Engineering Geology Microstructure medicine.disease hardness stomatognathic diseases medicine.anatomical_structure Distilled water correlation |
| Zdroj: | Minerals Volume 11 Issue 4 Minerals, Vol 11, Iss 336, p 336 (2021) Scopus RUO: Repositorio Institucional de la Universidad de Oviedo Universidad de Oviedo (UNIOVI) RUO. Repositorio Institucional de la Universidad de Oviedo instname |
| ISSN: | 2075-163X |
| DOI: | 10.3390/min11040336 |
| Popis: | The complex, dynamic, and hydrated microstructures of human dentin serve as the major determinant for the restorative performance of biomaterials. This study aimed to evaluate the mechanical properties of human dentin under different hydration conditions. The occlusal dentin of five third molars was exposed and cut into 1 mm2 dentin slabs. The slabs were then polished and further cut into 1 mm2 dentin beams and stored in distilled water. Two beams/tooth were used for testing their hardness (H) and elastic modulus (E) at 5 min (baseline), 1 h, and 24 h after dehydration (23 °C and 30% RH), and also for measuring weight at following dehydration times: 0 min, 5 min, 1 h, and 24 h. Five additional molars were employed to prepare 0.4 mm2 dentin beams (3/tooth) for determining ultimate tensile strength (UTS) at 5 min (baseline), 1 h, and 24 h post-dehydration. Statistical significance was set at α = 0.05. Dehydration time significantly affected H, E, weight-loss, and UTS of dentin (p < 0.05). H and E values showed a strongly positive and significant correlation (r > 0.5, p < 0.05). Dehydration can substantially modify the mechanical properties of dentin, leading to misinterpretation of restorative outcomes in vitro. |
| Databáze: | OpenAIRE |
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