Anisotropic ultimate strength and microscopic fracture patterns during tensile testing in the dentin-enamel junction region
| Autor: | Makoto Saito, Takashi Miyazaki, Fumio Nishimura, Yoshihiro Yamada, Toshiko Inoue |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Molar
Materials science 0206 medical engineering 02 engineering and technology 03 medical and health sciences 0302 clinical medicine stomatognathic system Tensile Strength Ultimate tensile strength Dentin medicine Humans Composite material Dental Enamel General Dentistry Tensile testing Enamel paint 030206 dentistry Tooth enamel 020601 biomedical engineering Dental-enamel junction stomatognathic diseases medicine.anatomical_structure visual_art Ceramics and Composites Fracture (geology) visual_art.visual_art_medium Anisotropy |
| Zdroj: | Dental materials journal. 39(2) |
| ISSN: | 1881-1361 |
| Popis: | The dentin-enamel junction (DEJ), which is the interface between the outer tooth enamel and the underlying dentin, has unique biomechanical properties that allow the two different materials to function together without fracture. The aim of this study was to investigate the anisotropic ultimate tensile strength of the DEJ. Twenty dumbbell-shaped samples were prepared from 10 extracted human molar teeth for tensile strength testing. The maximum tensile forces at fracture were measured in the direction parallel (10 samples) and perpendicular (10 samples) to the DEJ. The mean tensile strength of the samples was significantly higher under parallel forces (30.9±3.3 MPa) than under perpendicular forces (20.6±4.8 MPa; p |
| Databáze: | OpenAIRE |
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