The available dental implant systems have a success rate of 90%, and after healing time, they generally have the desired strength.
The healing time is too long (about 3 to 6 months). This means that, after placing a dental fixture, depending on which system a dentist uses, it takes up to 3-6 months till the first mechanical loads can be applied (i.e. in eating).
The structure is too strong for patients with weak bone properties such as elderly, heavy smokers, and people who suffer from a bone tumor in the jaw. These patient are usually advised to use the traditional solutions such as partial dentures.