Abstract
The effect of Al2O3 with respect to TiO2 as abrasive for the osseointegration of dental implants has been questioned. The aim has been to clarify the advantages or disadvantages of mechanical and biological response. The implants studied were as-received with acid etching and sandblasted with TiO2 and with Al2O3 with posterior acid etching. Roughness, microhardness, residual stresses and fatigue were determined. In vivo tests were realized in minipigs. The percentage of bone index contact (BIC) after 2 and 6 weeks of implantation was determined histometric evaluation. Results showed that the roughness of the Al2O3 treated implants was 2.54 respect to 0.80 μm for TiO2, microhardness were 370 and 241 HVN and compressive residual stresses of − 2450 and − 78.3 MPa, respectively. These compressive stresses justify the higher fatigue strength of the Al2O3 sandblasted samples. BIC values after 6 weeks were 63% compared to 38% for TiO2.
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The datasets generated during and/or analysed during the current study are available from the corresponding author on reasonable request.
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This research was funded by Spanish Government and European Union FEDER by the concession of the grant RTI2018-098075-B-C22, the Spanish Government by the Ramón y Cajal Program (RYC2018-025977-I) and the research group Generalitat de Catalunya 2017SGR708.
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FJG, RAP and YO worked in the materials science aspects (roughness, microhardness, fatigue tests) and CH, JLG and DT-L in the clinical aspects (in vivo tests).
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Gil, F.J., Pérez, R.A., Olmos, J. et al. The effect of using Al2O3 and TiO2 in sandblasting of titanium dental implants. Journal of Materials Research 37, 2604–2613 (2022). https://doi.org/10.1557/s43578-022-00534-0
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DOI: https://doi.org/10.1557/s43578-022-00534-0