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Surface‐conditioned dental implants: an animal study on bone formation

2009; Wiley; Volume: 36; Issue: 10 Linguagem: Inglês

10.1111/j.1600-051x.2009.01466.x

1600-051X

Bernd Stadlinger, Anna Theresa Lode, Uwe Eckelt, Ursula Range, Falko Schlottig, Thomas Hefti, R. Mai,

Dental Radiography and Imaging

The aim of this study was to determine whether bone formation around surface-conditioned implants is enhanced compared with non-surface-conditioned sandblasted acid-etched titanium implants.One hundred and forty-four implants were placed in the mandible of 18 minipigs. Before placement, implants were either surface conditioned in a solution containing hydroxide ions (conSF) or assigned to controls. Animals were euthanized after 2, 4 and 8 weeks of submerged healing, the 8-week group receiving polyfluorochrome labelling at week 2, 4, 6 and 8. One jaw quadrant per animal was selected for histological and histomorphometrical evaluation of mineralized bone-implant contact (mBIC), osteoid-implant contact (OIC) and bone volume (BV) analysis.Polyfluorochrome labelling showed no general differences in bone dynamics. mBIC showed the most pronounced differences after 2 weeks, reaching 65.5% for conSF compared with 48.1% for controls, p=0.270. Differences levelled out after 4 weeks (67.4% control, 65.7% conSF) and 8 weeks (64.0% control, 70.2% conSF). OIC levels were initially comparable, showing a slower decline for conSF after 4 weeks. BV was higher for conSF at all times. No significant differences could be found.A tendency towards increased mBIC was shown for surface-conditioned implants after short-term healing.