Document Detail

Time reversed elastic nonlinearity diagnostic applied to mock osseointegration monitoring applying two experimental models.
MedLine Citation:
PMID:  22423689     Owner:  NLM     Status:  Publisher    
This study broadens vibration-like techniques developed for osseointegration monitoring to the nonlinear field. The time reversed elastic nonlinearity diagnostic is applied to two mock models. The first one consists of tightening a dental implant at different torques in a mock cortical bone; the second one allows one to follow glue curing at the interface between a dental implant and a mock jaw. Energy is focused near the implant interface using the time reversal technique. Two nonlinear procedures termed pulse inversion and the scaling subtraction method, already used successfully in other fields such as contrast agents and material characterization, are employed. These two procedures are compared for both models. The results suggest that nonlinear elasticity can provide new information regarding the interface, complementary to the linear wave velocity and attenuation. The curing experiment exhibits an overall low nonlinear level due to the fact that the glue significantly damps elastic nonlinearity at the interface. In contrast, the torque experiment shows strong nonlinearities at the focus time. Consequently, a parallel analysis of these models, both only partially reflecting a real case, enables one to envisage future in vivo experiments.
Jacques Rivière; Sylvain Haupert; Pascal Laugier; T J Ulrich; Pierre-Yves Le Bas; Paul A Johnson
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Publication Detail:
Journal Detail:
Title:  The Journal of the Acoustical Society of America     Volume:  131     ISSN:  1520-8524     ISO Abbreviation:  -     Publication Date:  2012 Mar 
Date Detail:
Created Date:  2012-3-19     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7503051     Medline TA:  J Acoust Soc Am     Country:  -    
Other Details:
Languages:  ENG     Pagination:  1922-1927     Citation Subset:  -    
Université Pierre et Marie Curie, Université Paris 06, CNRS Unité Mixte de Recherche 7623, Laboratoire d'Imagerie Paramétrique, F-75006, Paris, France.
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