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Updated: Oct 30, 2025
Oral Biofilm Formation on Different Materials for Dental Implants
Published on: June 24, 2018
Bioactivity of an Experimental Dental Implant with Anodized Surface
Maria Fernanda Lima Villaça-Carvalho1, Juliani Caroline Ribeiro de Araújo1, Juliana Mariano Beraldo1
1Department of Bioscience and Oral Diagnosis, Institute of Science and Technology, UNESP-São Paulo State University São José dos Campos, São Paulo 12245-000, Brazil.
Background:
Several studies proved that anodic oxidation improves osseointegration. This study aimed to optimize osseointegration through anodization in dental implants, obtaining anatase phase and controlled nanotopography.
Methods:
The division of the groups with 60 titanium implants was: control (CG); sandblasted (SG); anodized (AG): anodized pulsed current (duty cycle 30%, 30 V, 0.2 A and 1000 Hz). Before surgery, surface characterization was performed using Atomic Force Microscopy (AFM), Scanning Electron Microscopy (SEM), X-ray Dispersive Energy Spectroscopy (EDS) and Raman Spectroscopy. For in vivo tests, 10 New Zealand white rabbits received an implant from each group. The sacrifice period was 2 and 6 weeks (n = 5) and the specimens were subjected to computed microtomography (μCT) and reverse torque test.
Results:
AFM and SEM demonstrated a particular nanotopography on the surface in AG; the anatase phase was proved by Raman spectroscopy. In the μCT and in the reverse torque test, the AG group presented better results than the other groups.
Conclusion:
The chemical composition and structure of the TiO2 film were positively affected by the anodizing technique, intensifying the biological characteristics in osseointegration.
