Importance of Ca(2+) modifications for osseointegration of smooth and moderately rough anodized titanium implants - a removal torque and histological evaluation in rabbit

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Importance of Ca(2+) modifications for osseointegration of smooth and moderately rough anodized titanium implants - a removal torque and histological evaluation in rabbit

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dc.contributor.author Fröjd, Victoria en_US
dc.contributor.author Wennerberg, Ann en_US
dc.contributor.author Franke Stenport, Victoria en_US
dc.date.accessioned 2012-12-21T12:58:55Z
dc.date.available 2012-12-21T12:58:55Z
dc.date.issued 2012 en_US
dc.identifier.issn 1523-0899 en_US
dc.identifier.uri http://hdl.handle.net/2043/14719
dc.description.abstract BACKGROUND: Incorporation of Ca(2+) into the titania of anodized titanium surfaces has been found to enhance osseointegration. It provides a stable surface when the ions are incorporated into the oxide layer during the anodizing process. The Ca(2+) may suggestively be prominent sites for mineral induction, attract proteins, and catalyze intracellular cascades. PURPOSE: The aim of the present study was to evaluate the osseointegration of smooth (S(a) < 0.5 µm) and moderately rough (S(a) 1.0-2.0 µm) commercially pure titanium implants, with and without Ca(2+) , in order to reflect on the importance of surface chemistry in relation to topography. MATERIALS AND METHODS: Anodized implants with (OxCa) or without Ca(2+) (Ox), blasted implants (Bl), and blasted anodized implants, with (BlOxCa) or without Ca(2+) (BlOx), were inserted in rabbit femur and tibia. The implant surfaces were characterized using interferometry, scanning electron microscopy, and X-ray photoelectron spectroscopy prior to implant installation. Removal torque (RTQ) measurements were executed on all implants after a healing period of 12 weeks. The implants were, thereafter, removed en bloc with surrounding tissues and prepared for histological evaluations. RESULTS: RTQ measurements of tibial implants revealed significantly higher values for BlOxCa implants (90.7 ± 23.3 Ncm) compared to OxCa (64.6 ± 18.2 Ncm) and BlOx implants (69.7 ± 17.5 Ncm) (p = 0.029). Ca(2+) modification of smooth implants placed in the femur did not reveal any differences. CONCLUSION: Ca(2+) modification of smooth implants resulted in similar interfacial shear strength as moderately rough implants and Ca(2+) modification of moderately rough implants demonstrated the significantly strongest interfacial shear strength when placed in rabbit tibia. This possibly demonstrated surface chemistry compensating for lesser roughness. en_US
dc.format.extent 9
dc.language.iso eng en_US
dc.publisher Wiley en_US
dc.subject.classification Medicine en_US
dc.title Importance of Ca(2+) modifications for osseointegration of smooth and moderately rough anodized titanium implants - a removal torque and histological evaluation in rabbit en_US
dc.type Article, peer reviewed scientific en_US
dc.contributor.department Malmö University. Faculty of Odontology
dc.identifier.doi 10.1111/j.1708-8208.2010.00315.x en_US
dc.subject.srsc Research Subject Categories::ODONTOLOGY en_US
dc.relation.ispartofpublication Clinical Implant Dental Related Research;5
dc.relation.ispartofpublicationvolume 14 en_US
dc.format.ePage 745
dc.format.sPage 737
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