Introduction: Aim of the project is to analyse in a clinical and statistical way the indications vs. contraindications as well as the most common complications of the all on four techniques.

Patients and methods: 70 cases were selected randomly and evaluated using clinical and cone beam scans as well as post operative visits.

Case reports: Analysis of 70 cases with the use of cone beam scans clinical pictures and result after follow up on a period of more than a year.

Results and conclusions: The cases presented show the numerous indications vs. contraindications as well as the management of complications.

Conflict of interest: None declared.