Introduction Nowadays Initially Research & Development Used to improve a patient’s masticator function Patients desired also the aesthetics , short treatment time and procedural reliability Improving Titanium’s surface activity , osseointegration and fixation Based on the discovery by Swedish Professor Per-Ingvar Brånemark , Titanium can be successfully fused into bone when osteoblasts grow on and into the rough surface of the implanted titanium Dental Implants Why Titanium?
Collagen , being the main constituting protein of the hard tissues, has the potential as a coating moiety on a Ti implant.
Hydroxyapatite (HA) coating has been particularly well investigated as a preliminary coating for collagen immobilization on titanium surfaces, because human bone is mainly composed of HA and collagen fibers.
However, the chemical bonding and the composition of HA-collagen is recognized as being difficult, because it involves two dissimilar organic and inorganic nanophases.
The HA blasted Ti discs showed the presence of calcium and phosphorous on the surface of Titanium.
After HNO 3 etching the calcium and phosphorous were all removed from the surface.
After H 3 PO 4 etching , the calcium was removed from the surface meanwhile the phosphorous remained , it was found that titanium react with phosphorous , confirmed by XRD.
The Al 2 O 3 blasted Ti discs showed the presence of alumina on the surface and it remain on the surface after acid etching , both with HNO 3 and H 3 PO 4 . it needed stronger acid or longer etching time to remove Al 2 O 3 .
Fig. 1 Al 2 O 3 Blasted #200 & H 3 PO 4 Etched Table 1. HA blasted Ti discs Table 2. HA blasted - HNO 3 etching Table 3. HA blasted - H 3 PO 4 etching Element Weight% Atomic% Compd% Formula O K 39.37 65.69 98.29 O2Ti P K 1.71 1.47 0.00 Ti 58.93 32.84 Totals 100.00 Element Weight% Atomic% Compd% Formula O K 40.05 66.67 100.00 O2Ti Ti 59.95 33.33 Totals 100.00 Element Weight% Atomic% O K 30.60 55.38 P K 4.88 4.56 Ca K 9.09 6.56 Ti K 55.43 33.50 Totals 100.00