The percentage of successful implants is more than 90%. However, it is possible for an implant to fail to bond with the surrounding bone, even after bone grafting. For such cases, implants are removed and another implant may be placed. Some of the reasons for non-integration of implants to the bone are: surgical trauma, infection around the implant, smoking (which reduces the blood flow and slows down healing), unhealthy bone, and allergy to titanium which is a rare occurrence.
Usually, infection of the gums around the implant causes bone loss if not treated properly. Proper oral hygiene should be a priority to ensure a successful implant.
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