Abstract：
:The evolution of bone tissue quantity and quality in contact with the surface of orthopedic and dental implants is a strong determinant of the surgical outcome but remains difficult to be assessed quantitatively. The aim of this study was to investigate the performance of a quantitative ultrasound (QUS) method to measure bone-implant interface (BII) properties. A dedicated animal model considering coin-shaped titanium implants with two levels of surface roughness (smooth, Sa = 0.49 µm and rough, Sa = 3.5 µm) allowed to work with a reproducible geometry and a planar interface. The implants were inserted in rabbit femurs and tibiae for 7 or 13 weeks. The ultrasonic response of the BII was measured ex vivo, leading to the determination of the 2-D spatial variations of bone in contact with the implant surface. Histological analysis was carried out to determine the bone-implant contact (BIC) ratio. The amplitude of the echo was significantly higher after 7 weeks of healing time compared to 13 weeks, for both smooth (p < 0.01) and rough (p < 0.05) implants. A negative correlation (R = - 0.63) was obtained between the ultrasonic response and the BIC. This QUS technique is more sensitive to changes of BII morphology compared to histological analyses.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Fraulob M,Vayron R,Le Cann S,Lecuelle B,Hériveaux Y,Albini Lomami H,Flouzat Lachaniette CH,Haïat Gdoi
10.1038/s41598-020-78806-0subject
Has Abstractpub_date
2020-12-15 00:00:00pages
21962issue
1issn
2045-2322pii
10.1038/s41598-020-78806-0journal_volume
10pub_type
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