|
|
Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Dental Medicine / Faculty of Dental Medicine >
Peer-reviewed Journal Articles, etc >
The Influences of Dehydration on the Mechanical Properties of Human Dentin
| Title: | The Influences of Dehydration on the Mechanical Properties of Human Dentin |
| Authors: | Chowdhury, Abu Faem Mohammad Almas Browse this author →KAKEN DB | | Alam, Arefin Browse this author | | Islam, Md Refat Readul Browse this author | | Yamauti, Monica Browse this author | | Alam, Mohammad Shafiqul Browse this author | | Rahman, Mohammad Musfiqur Browse this author | | Asad-Uz-Zaman Browse this author | | Ahmed, Mohiuddin Browse this author | | Alvarez-Lloret, Pedro Browse this author | | Sano, Hidehiko Browse this author →KAKEN DB |
| Keywords: | dentin | | dehydration | | hardness | | elastic modulus | | correlation | | ultimate tensile strength |
| Issue Date: | 24-Mar-2021 |
| Publisher: | MDPI |
| Journal Title: | Minerals |
| Volume: | 11 |
| Issue: | 4 |
| Start Page: | 336 |
| Publisher DOI: | 10.3390/min11040336 |
| Abstract: | 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 mm(2) dentin slabs. The slabs were then polished and further cut into 1 mm(2) 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 degrees 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 mm(2) 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 alpha = 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. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/81498 |
| Appears in Collections: | 歯学院・歯学研究院 (Graduate School of Dental Medicine / Faculty of Dental Medicine) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
|
|
