Bone healing at bicortically installed implants with different surface configurations. An experimental study in rabbits. Issue 3 (15th September 2014)

• Record Type: Journal Article
• Authors: Caneva, Marco; Lang, Niklaus P.; Calvo Guirado, José Luis; Spriano, Silvia; Iezzi, Giovanna; Botticelli, Daniele
• Is Part Of: Clinical oral implants research. Volume 26:Issue 3(2015:Mar.)
• Page Start: 293
• Page End: 299
• Publication Date: 2014-09-15
• Subjects: Dental implants -- Research -- Periodicals; 617.69
• DOI: 10.1111/clr.12475
• Languages: English
• ISSNs: 0905-7161

Abstract

<abstract abstract-type="main" id="clr12475-abs-0001"> <title>Abstract</title> <sec id="clr12475-sec-0001" sec-type="section"> <title>Objective</title> <p>To study the sequential healing at bicortically installed implants with surface modifications by the use of fluoroboric acid and/or H<sub>2</sub>O<sub>2</sub>.</p> </sec> <sec id="clr12475-sec-0002" sec-type="section"> <title>Material and methods</title> <p>Twenty‐eight albino New Zealand rabbits were used. Two recipient sites were prepared in the tibiae bilaterally, one in the metaphysis and the second in the diaphysis regions. Four implants with different surface characteristics were randomly installed with bicortical stabilization: (i) sandblasted and acid‐etched; (ii) same surface as i, but with a substitution of the hydrofluoric acid with fluoroboric acid; (iii) same surface as i, additionally treated with H<sub>2</sub>O<sub>2</sub>; and (iv) same surface modified as ii, additionally treated with H<sub>2</sub>O<sub>2</sub>. The animals were killed after 5, 8, 15, and 30 days. Ground sections were prepared for histological analyses.</p> </sec> <sec id="clr12475-sec-0003" sec-type="section"> <title>Results</title> <p>No statistically significant differences in osseointegration were found among various surfaces at any of the healing periods. A higher degree of osseointegration was observed at the implants placed in the metaphysis compared to those placed in the diaphysis, especially during early healing. A higher degree of osseointegration was found at sites with proximity to compact (cortical) bone when compared to the middle portion of the implants, especially in the diaphysis region.</p> </sec> <sec id="clr12475-sec-0004" sec-type="section"> <title>Conclusions</title> <p>Surfaces modified with different acids or H<sub>2</sub>O<sub>2</sub> resulted in similar osseointegration compared to a standard sandblasted and acid‐etched surface. The portion of the bicortically installed implants in close contact with the cortical compartment presented a higher percentage of osseointegration compared with the region in contact with the bone marrow compartment.</p> </sec> </abstract>