scholarly journals Polarized light microscopic analyses of collagen fibers in the rat incisor periodontal ligament in relation to areas, regions, and ages

2002 ◽  
Vol 268 (4) ◽  
pp. 381-387 ◽  
Author(s):  
Koichiro Komatsu ◽  
Lis Mosekilde ◽  
Andrus Viidik ◽  
Mototsugu Chiba
Keyword(s):  
Periodontal Ligament ◽  
Polarized Light ◽  
Collagen Fibers ◽  
Rat Incisor

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

2019 ◽  
Vol 5 (1) ◽  
Author(s):  
Rafael Silveira Faeda ◽  
Suzana Clesia Silverio do Nascimento ◽  
Pâmela Leticia Santos ◽  
Rodolfo Jorge Boeck ◽  
Rafael Sartori ◽  
...  
Keyword(s):  
Case Report ◽  
Bone Tissue ◽  
Rare Event ◽  
Polarized Light ◽  
Collagen Fibers ◽  
Titanium Implants ◽  
Tissue Response ◽  
Internal Diameter ◽  
Human Beings ◽  
Circularly Polarized Light

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.

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