Anodization Surface Improves Osseointegration

Anodization Surface Improves Osseointegration

To easily identify difference sizes, AIDI dental implants and accessories are anodized so that the surface of the products appear differently in color (Fig. 6-1).

The coronal portion of AIDI Dental Implant is anodized with a vertical height of 1.2mm. The question is: will the smooth-looking surface reduce osseintegration. The answer is: NO. To the opposite, anodization surface treatment to titanium material increases thickness of the oxidized protective layer (TiO2) and its roughness. In this manner, the anodization treatment enhances biocompatibility of AIDI dental implant[1].

Macroscopically speaking, the anodized titanium surface has an increased gloss and smoothness. The smooth titanium surface can effectively prevent accumulation of bacteria and calculus (as widely known, the purpose of root planning surgery is to smoothen tooth root to prevent accumulation of bacteria and calculus). Therefore, smooth anodized surface indicates free root planning surgery for the patient.

Microscopically speaking, anodization creates micropores on titanium surface which makes it ideal for cells to grow therein1. As a matter of fact, compared to machined surface, anodization surface is associated with better and faster tissue growth. In 2008, Gurgel conducted experiment on dogs[2] to compare bone growth of bone tissue on anodized implant surface and machined titanium surface.

Burgos conducted another experiment on rabbits[3]. The result shows an osseointegration rate around anodized implant of 20% (in 7 days), 23% (14 days) and 46% (28 days), comparing to 15% (in 7 days), 11%(14 days), and 26% (28 days) for machined surface.

Huang also conducted experiment on monkey[4]. Anodized dental implant was placed at maxillary molar area. The average osseointegration rate achives 74% in 16 weeks.

In conclusion, titanium implant surface with anodization is associated with better osseointegration.

 

[1] Gupta, A.; Dhanraj, M. & Sivagami, G. (2010) Status of surface treatment in endosseousimplant: a literary overview. Indian journal of dental research: official publication ofIndian Society for Dental Research, 21, 433-438.

[2] Gurgel, B.C.; Goncalves, P.F.; Pimentel, S.P.; Nociti, F.H.; Sallum, E.A.; Sallum, A.W. &Casati, M.Z. (2008) An oxidized implant surface may improve bone-to-implantcontact in pristine bone and bone defects treated with guided bone regeneration: anexperimental study in dogs. Journal of periodontology, 79, 1225-1231.

[3] Burgos PM, Rasmusson L, Meirelles L, Senerby L. Early bone tissue responses to turned and oxidized implants in a rabbit tibia. Clin Impl Dent Relat Res 2008;10:181-190.

[4] Huang YH, Xiropaidis AV, Sorensen RG, Albandar JM, Hall J, Wikesjö UME. Bone formation of titanium porous oxide (TiUnite) oral implants in type IV bone. Clin Oral Impl Res 2005;16:105-111.