A comparative evaluation between aluminium and titanium dioxide microparticles for blasting the surface titanium dental implants: an experimental study in rabbits.
OBJECTIVE
The aim of this study was to compare, through biomechanical and histological analysis, the aluminium (AlO2) and titanium dioxide (TiO2) microparticles for blasting during the sandblasting acid surface treatment in titanium dental implants using a rabbit tibia model.


METHODS
Forty-eight commercially available titanium dental implants were divided into two test groups (n = 24 per group): implants with surface treated by AlO2 followed by acid etching as control group (Con group) and implants with surface treated by TiO2 followed by acid etching as test group (Test group). The implants were randomly installed in both tibias of eight rabbits and block samples were removed 4 and 8 weeks after implantation. Resonance Frequency Analyses were performed immediately after the implantation and at 8 weeks. Twelve implants of each group were removed to measure the reverse torque. The remaining implants were used for histological analysis. The data were compared using statistical tests (α = 0.05).


RESULTS
In comparing the implant stability quotient at the two time points, no significant statistical differences were found (P > 0.05), as well as in the removal torque test at 8 weeks after implant placement, no found significant difference between the two groups was tested. Histomorphometric analysis showed a high degree of bone organization in all samples with no significant difference between groups in the bone-to-implant contact (P > 0.05).


CONCLUSIONS
Within the limitations of this study, the results indicate that the media of surface blasting (AlO2 or TiO2 microparticles) did not show significant differences in the tested parameters for assessing the osseointegration of the implants.
Biotecnos Research Center, Santa Maria, Brazil.|University Catholica San Antonio de Murcia (UCAM), Murcia, Spain.
Sergio A
SA
Gehrke
International Dentistry Research Cathedra, Faculty of Medicine, San Antonio Catholic University of Murcia (UCAM), Murcia, Spain.
María P
MP
Ramírez-Fernandez
International Research Cathedra, UCAM, Universidad Católica San Antonio, Murcia, Spain.
José Manuel
JM
Granero Marín
General Dentistry of the 9 de Julho University, San Pablo, Brazil.
Marcos
M
Barbosa Salles
Research Center in Oral Health, Department of Biomedical, Surgical and Dental Sciences, Università degli Studi di Milano, IRCCS Istituto Ortopedico Galeazzi, Milano, Italy.
Massimo
M
Del Fabbro
International Dentistry Research Cathedra, Faculty of Medicine & Dentistry, San Antonio Catholic University of Murcia (UCAM), Murcia, Spain.
José Luis
JL
Calvo Guirado
D017607:Aluminum Compounds / Q000627:therapeutic use*; D000818:Animals; D045662:Dental Etching / Q000379:methods*; D003758:Dental Implantation, Endosseous / Q000379:methods*; D015921:Dental Implants; D011817:Rabbits; D000074269:Resonance Frequency Analysis; D014025:Titanium / Q000627:therapeutic use*; D019415:Torque
D017607:Aluminum Compounds; D015921:Dental Implants; C009495:titanium dioxide; D014025:Titanium
SLA surface; aluminium blasted; dental implants; surface treatment; titanium blasted