RT Journal Article T1 In vivo low-density bone apposition on different implant surface materials A1 Braceras, I. A1 De Maeztu, M. A. A1 Alava, J. I. A1 Gay-Escoda, C. AB During osseointegration, new bone may be laid down on the implant surface and/or on the old bone surface; the former is known as contact osteogenesis and the latter as distance osteogenesis. Implant surface topography and material composition affect this process. The present study evaluates Ca and P apposition onto three different dental implant material surfaces (carbon monoxide (CO) ion implantation on Ti6Al4V, sand blasting and acid etching on commercially pure titanium and untreated Ti6Al4V) on the mandibles of beagles after healing periods of 3 and 6 months. Energy dispersive spectroscopy is useful for identifying low-density bone relative to surrounding mature bone, allowing for discrimination of the osteogenesis source. Low-density bone was only found at the apical end; there was none on the surface of untreated implants. Low-density bone arising from mature bone towards the implant at month 3 (i.e. distance osteogenesis) was only present on the CO ion implanted samples, due to the modification of the surface nano-topography and the chemistry and structure of the material. SN 0901-5027 YR 2009 FD 2009-03 LK https://hdl.handle.net/11556/3265 UL https://hdl.handle.net/11556/3265 LA eng NO Braceras , I , De Maeztu , M A , Alava , J I & Gay-Escoda , C 2009 , ' In vivo low-density bone apposition on different implant surface materials ' , International Journal of Oral and Maxillofacial Surgery , vol. 38 , no. 3 , pp. 274-278 . https://doi.org/10.1016/j.ijom.2008.12.016 NO The authors would like to express their gratitude for the financial assistance provided by the Spanish Ministry of Science and Technology –CDTI- under Project n.20020327. DS TECNALIA Publications RD 30 jul 2024