NDLI: Molecular leakage at implant-abutment connection—in vitro investigation of tightness of internal conical implant-abutment connections against endotoxin penetration

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Molecular leakage at implant-abutment connection—in vitro investigation of tightness of internal conical implant-abutment connections against endotoxin penetration

Content Provider	Semantic Scholar
Author	Harder, Sönke Dimaczek, Birka Açil, Yaha Terheyden, Hendrik Freitag-Wolf, Sandra Kern, Matthias
Copyright Year	2009
Abstract	Microleakage has been discussed as a major contributing factor for inflammatory reactions at the implant-abutment connection. In previous studies, the tightness against corpuscular bodies (viable bacteria) has been successfully investigated under static and dynamic conditions. The aim of this study was to investigate the tightness against endotoxins of two implant systems (AstraTech and Ankylos) with conical internal connections under static conditions. The inner parts of eight implants of each system were inoculated with endotoxin. Implants were screwed together with the respective abutments and stored under isostatic conditions in a supernatant of pyrogen-free water for 168 h. Supernatant samples were taken after 5 min, 24 h, 72 h, and 168 h, and endotoxin contamination was determined by the amebocyte-lysate test. Only one implant in the AstraTech group showed no sign of endotoxin contamination after 168 h, while the other implants showed contamination after varying storage times, respectively. The implants in the Ankylos group showed endotoxin contamination after only 5 min of storage in the supernatant solution. The tested internal conical implant-abutment connections appear to be unable to prevent endotoxin leakage. In average, Astra implants showed a higher tightness than Ankylos implants.
Starting Page	427
Ending Page	432
Page Count	6
File Format	PDF HTM / HTML
DOI	10.1007/s00784-009-0317-x
PubMed reference number	19629543
Journal	Medline
Volume Number	14
Alternate Webpage(s)	http://www.endoexperience.com/documents/MolecualrLeakageatImplant-abutmentInternalConicalConnection-inVitro-HarderSetal-ClinOralInve.pdf
Alternate Webpage(s)	https://doi.org/10.1007/s00784-009-0317-x
Journal	Clinical Oral Investigations
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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