The two biggest disadvantages of Titanium dental implants are:
Risk of allergic reactions – There are rare cases of patients with metal allergies developing infections or inflammations at the implant sites. It can cause erythema, urticaria, eczema, swelling, pain, necrosis, and bone loss.
Gum discoloration – Titanium implants may cause silvery discoloration in your gums around the implant site.