| Autor: |
Rafael Silveira Faeda, Suzana Clesia Silverio do Nascimento, Pâmela Leticia Santos, Rodolfo Jorge Boeck, Rafael Sartori, Rogério Margonar, Elcio Marcantonio |
| Jazyk: |
angličtina |
| Rok vydání: |
2019 |
| Předmět: |
|
| Zdroj: |
International Journal of Implant Dentistry, Vol 5, Iss 1, Pp 1-6 (2019) |
| Druh dokumentu: |
article |
| ISSN: |
2198-4034 |
| DOI: |
10.1186/s40729-019-0184-4 |
| Popis: |
Abstract Background Fracture of an implant is a quite rare event but represents an important opportunity to evaluate the peri-implant bone tissue response to implant overload in human beings. This study aimed to evaluate bone tissue around three fractured titanium implants retrieved from a human maxilla, by histomorphometric and birefringence analyses. Case report For this, the implants and the surrounding bone were removed after having been united to a tooth in function for 45 months, by a 4-mm internal diameter trephine bur, following an undecalcified section was obtained. The results showed a rate of 77.3% of bone-to-implant contact (BIC) and 80.3% of bone area filling within the limits of the implant threads. Under circularly polarized light microscopy investigation, the amount of the transverse collagen fibers was of 48.11%, and the amount of the longitudinal collagen fibers was of 51.89%. Conclusion Within the limitation of this study, the possible cause of the implant fracture could be the association of overload, inadequate implant diameter, and fragile internal hexagon connection. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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