OBJECTIVES: The surface properties of titanium dental implants are key parameters for rapid and intimate bone-implant contact. The osseointegration of four implant surfaces was studied in the femoral epiphyses of rabbits. MATERIAL AND METHODS: Titanium implants were either grit-blasted with alumina or biphasic calcium phosphate (BCP) ceramic particles, coated with a thin octacalcium phosphate (OCP) layer, or prepared by large-grit sand blasting and acid-etched (SLA). After 2 and 8 weeks of implantation, the bone-implant contact and bone growth inside the chambers were compared. Scanning electron microscopy (SEM) and profilometry showed distinct microtopographies. RESULTS: The alumina-Ti, BCP-Ti and OCP-Ti groups had similar average surface roughness in the 1-2 mum range whereas the SLA surface was significantly higher with a roughness averaging 4.5 microm. Concerning the osseointegration, the study demonstrated a significantly greater bone-to-implant contact for both the SLA and OCP-Ti surfaces as compared with the grit-blasted surfaces, alumina- and BCP-Ti at both 2 and 8 weeks of healing. CONCLUSION: In this animal model, a biomimetic calcium phosphate coating gave similar osseointegration to the SLA surface. This biomimetic coating method may enhance the apposition of bone onto titanium dental implants.
OBJECTIVES: The surface properties of titanium dental implants are key parameters for rapid and intimate bone-implant contact. The osseointegration of four implant surfaces was studied in the femoral epiphyses of rabbits. MATERIAL AND METHODS: Titanium implants were either grit-blasted with alumina or biphasic calcium phosphate (BCP) ceramic particles, coated with a thin octacalcium phosphate (OCP) layer, or prepared by large-grit sand blasting and acid-etched (SLA). After 2 and 8 weeks of implantation, the bone-implant contact and bone growth inside the chambers were compared. Scanning electron microscopy (SEM) and profilometry showed distinct microtopographies. RESULTS: The alumina-Ti, BCP-Ti and OCP-Ti groups had similar average surface roughness in the 1-2 mum range whereas the SLA surface was significantly higher with a roughness averaging 4.5 microm. Concerning the osseointegration, the study demonstrated a significantly greater bone-to-implant contact for both the SLA and OCP-Ti surfaces as compared with the grit-blasted surfaces, alumina- and BCP-Ti at both 2 and 8 weeks of healing. CONCLUSION: In this animal model, a biomimetic calcium phosphate coating gave similar osseointegration to the SLA surface. This biomimetic coating method may enhance the apposition of bone onto titanium dental implants.
Authors: Rafael Manfro; Marcelo Carlos Bortoluzzi; Vinícius Fabris; Carlos Nelson Elias; Vera Cavalcanti de Araújo Journal: J Maxillofac Oral Surg Date: 2013-09-13
Authors: Victor Palarie; Constantin Bicer; Karl M Lehmann; Mohammad Zahalka; Florian G Draenert; Peer W Kämmerer Journal: Clin Oral Investig Date: 2011-08-06 Impact factor: 3.573
Authors: José Luis Calvo-Guirado; Marta Satorres-Nieto; Antonio Aguilar-Salvatierra; Rafael Arcesio Delgado-Ruiz; José Eduardo Maté-Sánchez de Val; Jordi Gargallo-Albiol; Gerardo Gómez-Moreno; Georgios E Romanos Journal: Clin Oral Investig Date: 2014-04-16 Impact factor: 3.573