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Bacterial microleakage at the abutment‐implant interface, in vitro study
Author(s) -
Larrucea Carlos,
Conrado Aparicio,
Olivares Denise,
Padilla Carlos,
Barrera Andrea,
Lobos Olga
Publication year - 2018
Publication title -
clinical implant dentistry and related research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.338
H-Index - 85
eISSN - 1708-8208
pISSN - 1523-0899
DOI - 10.1111/cid.12589
Subject(s) - implant , dentistry , conical surface , abutment , materials science , peri implantitis , leakage (economics) , dental implant , orthodontics , biomedical engineering , medicine , composite material , engineering , surgery , structural engineering , economics , macroeconomics
In implant rehabilitation, a microspace is created at the abutment‐implant interface (AII). Previous research has shown that oral microbiome can proliferate in this microspace and affect periimplant tissues, causing inflammation in peri‐implant tissues. Preventing microbial leakages through the AII is therefore an important goal in implantology. Objective To determine the presence of marginal bacterial microleakage at the AII according to the torque applied to the prosthetic implant in vitro. Material and Methods Twenty‐five Ticare Inhex internal conical implants (MG Mozo‐Grau, Valladolid, España) were connected to a prosthetic abutment using torques of <10, 10, 20, 30, and 30 N and then sealed. The samples were submitted to cycles of occlusal loads and thermocycling, then one sample of each group was observed by micro TC, while the rest were mounted on devices according to the bacterial leakage model with Porphyromonas gingivalis . Results Bacterial leakage was observed only in the <10 and 10 N torque samples, and the same groups presented poor abutment/implant adjustment as determined by micro‐CT. Conclusion The different torques applied to the abutment‐implant system condition the bacterial leakage at the implant interface. No microleakage was observed at 20 and 30 N.