Human non-decalcified histology of three dental implants 45 months under function—a case report

International Journal of Implant Dentistry

Rafael Sartori¹  Elcio Marcantonio¹  Rafael Silveira Faeda²  Rogério Margonar²  Rodolfo Jorge Boeck²  Pâmela Leticia Santos²  Suzana Clesia Silverio do Nascimento³ 

[1] Department of Diagnosis and Surgery, School of Dentistry at Araraquara, São Paulo State University (UNESP);Department of Health Sciences, Post-graduation Program in Implantology, University of Araraquara - UNIARA Dental School;Department of Health Sciences, University of Araraquara (UNIARA);

关键词: Dental implants;    Circularly polarized light;    Collagen fiber orientation;    Tooth-implant connection;   

DOI  :  10.1186/s40729-019-0184-4

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown