A histological and histomorphometrical evaluation of retrieved human implants with a wettable, highly hydrophilic, hierarchically microstructured surface: a retrospective analysis of 14 implants.
OBJECTIVE
Analysis of human-retrieved implants provides a unique opportunity to evaluate osseointegration processes. There is evidence that faster bone apposition is present at textured surfaces, with a very high success percentage. Aim of the present retrospective analysis was an evaluation of 14 human retrieved from humans implants with a wettable, highly hydrophilic, microstructured surface.


METHODS
The archives of the Implant Retrieval Center of the Dental School, University of Chieti-Pescara, Italy, were searched, and a total of 14 implants FRIADENT plus surface (Dentsply Implants Manufacturing GmbH, Mannheim, Germany) retrieved after a loading period comprised between 4 and 8 weeks were found.


RESULTS
Around all implants, newly formed bone was found in direct contact with the implant surface, with no connective fibrous tissue found at the interface. In all implants, no epithelial downgrowth was present. A very high bone-to-implant contact percentage was found.


CONCLUSIONS
The efficacy of dental implants is related to biological and biomechanical stability and to the integration between the bone and the implant. This integration plays the key role in the fixation and anchoring of the implants.
Dental School, University of Chieti-Pescara, Italy.
Giovanna
G
Iezzi
Marco
M
Degidi
Adriano
A
Piattelli
Jamil A
JA
Shibli
Vittoria
V
Perrotti
D001853:Bone Marrow / Q000473:pathology; D001857:Bone Matrix / Q000473:pathology; D016723:Bone Remodeling / Q000502:physiology; D001842:Bone and Bones / Q000473:pathology; D015921:Dental Implants; D003764:Dental Materials / Q000737:chemistry*; D017267:Dental Prosthesis Design; D006801:Humans; D057927:Hydrophobic and Hydrophilic Interactions; D016348:Osseointegration / Q000502:physiology; D010006:Osteoblasts / Q000166:cytology; D010011:Osteocytes / Q000473:pathology; D010012:Osteogenesis / Q000502:physiology; D012189:Retrospective Studies; D013499:Surface Properties; D017155:Wettability
D015921:Dental Implants; D003764:Dental Materials