When implants are not challenged?

Dental implants should not be set in children and adolescents, pregnant women or people with metabolic disorders (such as diabetes, disorders of bone metabolism).
People with certain drugs for bone-building are taking, because they are bone loss (osteoporosis), Paget's disease or certain tumors suffer, can a disease of the jaw bone can develop. Parts of the jaw bone die or regenerate itself after non-interference. Whoever occupies until propionate.
Should therefore refrain Tooth implicated, guesses about the German Society for Oral and Maxillofacial Surgery.
If the immune system from disorders (such as diabetes, certain blood cancers, AIDS) or drugs weakened, the risk of infection during implantation too high. Similarly, in the event of serious rheumatic diseases, increased bleeding, drug addiction and serious mental disorders of implants discouraged.
Smoking makes a healing of the implant or even prevented. The prognosis in this case is much worse.