In order for the patient to be a candidate for this operation, the gums and jawbones must be in good condition in terms of shape, size, location of the jawbones, and adjacent and opposite teeth.
Those with poor oral hygiene, heavy smokers, and diabetics are all at risk for different types of gum disease that affect the implants and cause what is called peri-implantitis, which increases the chances of failure in the long run. Long-term steroid use, osteoporosis [12] and other diseases affecting bone also pose a risk for early failure of implants.
For diabetes, studies have found that the success rate of implants in well/very well controlled diabetes is comparable to the success rate in normal subjects.[13][14] Some studies have suggested that radiotherapy can negatively affect the success and survival rate of implants.[15] However, a systematic study published in 2016 found that dental implants in the irradiated area in the mouth may have a high survival rate, provided that the patient maintains oral hygiene and follows up regularly with the attending physician to prevent complications.[16]
