RCT Comparing KS Versus TS for Ovedenture
To evaluate the clinical and radiographic outcomes of KS implants used to rehabilitate edentulous mandible with dental-retained overdentures, and to compare it with same treatment on TS implants
- EligibilityCriteria: Inclusion Criteria:  Any edentulous patient (post-extractive sites must to be healed from at least 3 months), with sufficient bone height and width in the anterior mandible (between canines) to allow the placement of two implants of 3.5 mm diameter of at least 8.5 mm of length. 18 years or older, and able to sign an informed consent. Smokers will be included and categorized into: 1) non smokers; 2) moderate smokers (smoking up to 10 cigarettes/day); 3) heavy smokers (smoking more than 11 cigarettes/day). In case of post-extractive sites, they must have been healing for at least 3 months before being treated in the study.  Exclusion Criteria:  Exclusion criteria  General contraindications to implant surgery. Patients irradiated in the head and neck area. Immunosuppressed or immunocompromised patients. Patients treated or under treatment with intravenous amino-bisphosphonates. Patients with untreated periodontitis. Patients with poor oral hygiene and motivation. Previous guided bone reconstruction at the intended implant sites. Uncontrolled diabetes. Pregnancy or nursing. Substance abuser. Psychiatric problems or unrealistic expectations. Lack of opposite occluding dentition in the area intended for implant placement. Patients with infection and or inflammation in the area intended for implant placement. Patients participating in other studies, if the present protocol cannot be properly adhered to. Patients referred only for implant placement and cannot be followed ant the treating centre. Patients unable to be followed for 5 years. - HealthyVolunteers: Accepts Healthy Volunteers - Gender: All - MinimumAge: 18 Years - StdAgeList: Adult, Older Adult