A multicenter prospective observational study in which aim is to illustrate the clinical outcome of dental implants "Kontact N"; and the effects of its nanostructured surface on the osseointegration and secondary stability without increasing the rate of peri-implantitis. All the enrolled patients will be eligible for one or multiple implant-supported fixed restoration(s) according to the routine clinical practice and the manufacturer's instruction for use.

Inclusion Criteria:

• Edentulous patient (partially or completely AND formerly, recently or just before implantation) requiring the placement of one (or more) dental implant (s) in maxillary or mandibular
• Age ≥ 18 years
• Good general health (ASA score between [1-2])
• Sufficient bone volume and quality (with or without bone graft) to support the implant
• Non-opposition of the patient for the collection of his medical data as part of the study (delivery of a patient's sheet)

Exclusion Criteria:

1. Poor oral hygiene
2. Bruxism, parafunctional habits, occlusion disorders and / or temporomandibular joints
3. Infections and oral inflammation such as periodontitis, gingivitis
4. Patient with metabolic disorders (eg diabetes mellitus) or bone disease that may compromise peri-implant tissue healing
5. Heavy smoker (> 10 cigarettes / day)
6. Patient with a pathology or immunosuppressive therapy such as chemotherapy, radiotherapy
7. Patient on prolonged steroid therapy
8. Titanium / titanium alloy allergy
9. Alcohol or drug abuse
10. Pregnant woman (or likely to be pregnant); or breastfeeding
11. Difficulty of medical follow-up patients with geographical, social or psychological constraints
12. Persons deprived of liberty or guardianship
13. Involuntary / patient refusal to participate in the study

Any patient who is eligible and planned for an implant-supported prosthetic restoration following the instructions for use of the KONTACT N implant and who meets the inclusion / exclusion criteria.