| Autor: |
Kimura S; Department of Fixed Prosthodontics, Tokyo Dental College., Sekine H; Department of Fixed Prosthodontics, Tokyo Dental College., Kawasaki T; Department of Fixed Prosthodontics, Tokyo Dental College., Sato T; Department of Fixed Prosthodontics, Tokyo Dental College., Kasahara N; Department of Histology and Developmental Biology, Tokyo Dental College. |
| Jazyk: |
angličtina |
| Zdroj: |
Dental materials journal [Dent Mater J] 2024 Jul 31; Vol. 43 (4), pp. 552-558. Date of Electronic Publication: 2024 Jul 09. |
| DOI: |
10.4012/dmj.2023-295 |
| Abstrakt: |
This study aimed to clarify the fracture resistance of resin abutments built on endodontically treated roots with the remaining coronal teeth via static and cyclic loading tests. Endodontically treated bovine roots, which had a remaining coronal tooth covered with an occupied area for a quarter and half of the circumference at the tensile side or covered the circumference at both the tensile and compressive sides, were fabricated to build up to the resin abutment. Fracture resistance was evaluated via static and cyclic loading tests by applying a load of 30° to the tooth axis. Half of the circumference of the remaining coronal tooth showed a significantly higher static fracture load and survival rate. The remaining coronal tooth on the compressive side improved the dynamic fracture resistance associated with severe fractures. The occupied area and location of the remaining coronal tooth affected the static and dynamic fracture resistances. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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