Introduction:
Prosthodontic rehabilitation of patients subjected to tumour surgery within the facial part of the skull is always difficult and demanding. Surgical treatment often leads to deformations and defects of soft and hard tissues, and the used adjuvant treatment contributes to further complications.

Aim of the study:
To assess the survival rate of dental implants in patients with risk factors. The analysis involved implants inserted into both the bone of the mandible and transplanted bone in patients after tumor surgeries.

Material and methods:
The study involved a group of 38 patients aged 31-87 treated with implants after resection and reconstruction of the mandible. In the control studies, the stability of implants, the condition of peri-implant tissues, the condition of the oral mucosa and hygiene were evaluated. The evaluation of outcome of prosthetic rehabilitation with implants, including their survival rate, was carried out at one year and two and three years after implantation procedures.

Results:
During the 3-year follow-up of all the implants introduced into patients’ own bone or bone grafted in the mandible, the survival rate in both cases after one and two years was 100%and after three years 94.83% and 90.48%, respectively.

Conclusions:
1. The decision to place implants in patient’s own bone or in the grafted one, does not impact the results of treatment. 2. In oncological patients after resection and reconstruction of jawbone, prosthetic rehabilitation with intraosseous implants may be considered a safe option.