**Acknowledgements**

in some cases. Of course, the presence of superstructure facilitates the galvanic phenomena more. However there is limited knowledge on this matter and definitely further research is required in this topic while the development of guidelines for clinicians to minimize intraoral corrosion of dental implants might have a beneficial effect on longevity of implant-retained

**Couple Potential**

**Couple Potential**

(Ti)/(60Au–24Pt–15Pd) 0.210 (Ti)/(85.5Au–6.5Pt–4.8Pd–1.5Ag) 0.175 (Ti)/(51.5Au−38.4Pd–8.5In–1.5Ga) 0.148 (Ti)/(65Ag–23Pd–6.4Cu–2In) 0.099 (Ti)/(68.5Au–11.7Cu–11Ag–3.8Pd–3.5Pt–1.5Zn) 0.097 (Ti)/(71Au–14.5Cu–9Ag–2Pd–2Pt–1.5Zn) 0.088 (Ti)/(63Ni–21.7Cr–10.8Mo–1.8Fe–1.5Si–1W) −0.132 (Ti)/(65.2Ni–21.6Cr–10.5Mo1.3Si–0.7Fe–0.5Mn–0.2Yt) −0.167 (Ti)/(79.2Ni–14.5Cr–6Mo–0.3Co) −0.191 (Ti)/(77.5Ni–13.3Cr–3.1Mo–2Ti–1.5Be–1Si–0.5Co) −0.229 (Ti)/(78.4Ni–13.Cr–4.5Mo–3.4Al–0.6Fe) −0.274

**Table 7.** Difference in potential between Ti and dental alloys in Fusayama reagent with pH 5 at 37°C [21].

composition, oxide type and electrochemical properties of Ti implants.

from that of ANO where the electrochemical properties are enhanced.

**•** Surface roughening techniques significantly affect the roughness, morphology, elemental

**•** Electrochemical properties of dental implants are inferior compared to untreated cpTi apart

(Ti)/(68.9Ag–26Pd26–4Cu–0.9Au–0.1In–0.1Zn) −0.09 (Ti)/(76.5Au–12Ag–8Cu–2Pd–1.5Pt) −0.14 (Ti)/(66.5Ni–22Cr–9Mo–1.6Si0.5Fe–0.4Ce) −0.22 (Ti)/(67Co–28.5Cr–4.5Mo) −0.31

**Table 6.** Difference in potential between Ti and dental alloys in artificial saliva at 37°C [12].

**(V)**

**(V)**

restorations.

164 Dental Implantology and Biomaterial

**5. Conclusions**

This chapter was supported financially by Vice Deanship of scientific research and research chairs, King Saud University, Riyadh, Saudi Arabia
