Human non-decalcified histology of three dental implants 45 months under function-a case report
Nenhuma Miniatura disponível
Data
2019-09-25
Autores
Faeda, Rafael Silveira
Silverio do Nascimento, Suzana Clesia
Santos, Pamela Leticia
Boeck Neto, Rodolfo Jorge
Sartori, Rafael [UNESP]
Margonar, Rogerio
Marcantonio, Elcio [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Springer
Resumo
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.
Descrição
Palavras-chave
Dental implants, Circularly polarized light, Collagen fiber orientation, Tooth-implant connection
Como citar
International Journal Of Implant Dentistry. Tokyo: Springer Japan Kk, v. 5, n. 1, 6 p., 2019.