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Influence of healing time on the ultrasonic response of the bone-implant interface

Abstract : The aim of the present study is to investigate the effect of bone healing on the ultrasonic response of coin-shaped titanium implants inserted in rabbit tibiae. The ultrasound response of the interface was measured in vitro at 15 MHz after 7 and 13 weeks of healing time. The average value of the ratio r between the amplitudes of the echo of the bone-implant interface and of the water-implant interface was determined. The bone-implant contact (BIC) was measured by histomorphometry and the degree of mineralisation of bone was estimated qualitatively by histologic staining. The significant decrease of the ultrasonic quantitative indicator r (p = 2.10(-4)) vs. healing time (from r = 0.53 to r = 0.49) is explained by (1) the increase of the BIC (from 27% to 69%) and (2) the increase of mineralization of newly formed bone tissue, both phenomena inducing a decrease of the gap of acoustical impedance. (E-mail: (C) 2012 World Federation for Ultrasound in Medicine & Biology.
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Submitted on : Tuesday, May 1, 2012 - 11:14:49 AM
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V. Mathieu, Romain Vayron, E. Soffer, F. Anagnostou, Guillaume Haiat. Influence of healing time on the ultrasonic response of the bone-implant interface. Ultrasound in Medicine & Biology, Elsevier, 2012, 38 (4), pp.611--618. ⟨10.1016/j.ultrasmedbio.2011.12.014⟩. ⟨hal-00692620⟩



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