In vitro synchrotron-based radiography of micro-gap formation at the implant-abutment interface of two-piece dental implants.
Micro-gap formation at the implant-abutment interface of two-piece dental implants was investigated in vitro using high-resolution radiography in combination with hard X-ray synchrotron radiation. Images were taken with the specimen under different mechanical loads of up to 100 N. The aim of this investigation was to prove the existence of micro-gaps for implants with conical connections as well as to study the mechanical behavior of the mating zone of conical implants during loading. Synchrotron-based radiography in comparison with classical laboratory radiography yields high spatial resolution in combination with high contrast even when exploiting micro-sized features in highly attenuating objects. The first illustration of a micro-gap which was previously indistinguishable by laboratory methods underlines that the complex micro-mechanical behavior of implants requires further in vitro investigations where synchrotron-based micro-imaging is one of the prerequisites.
European Synchrotron Radiation Facility, Grenoble, France. arack@snafu.de
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A
Rack
T
T
Rack
M
M
Stiller
H
H
Riesemeier
S
S
Zabler
K
K
Nelson
D000044:Dental Abutments; D015921:Dental Implants; D017267:Dental Prosthesis Design; D003799:Dental Stress Analysis / Q000379:methods*; D006801:Humans; D019252:Radiography, Dental, Digital; D017356:Synchrotrons; D014965:X-Rays
D015921:Dental Implants