Inclusion Criteria:  Patients who qualify for mandibular rehabilitation by means of full-arch prostheses supported by two Nuvo Tapered IF implants and two Tapered CF implants  Exclusion Criteria:  Contraindications according to the Instructions for Use of the device will be applied, as follows:  Signs of allergy or hypersensitivity to the chemical ingredients of the material: titanium; Presence of acute inflammatory or infectious processes in live tissue; Unsuitable bone volume and/or quality; Systemic complications or diseases such as: bone metabolism disorders, blood clotting disorders, unsuitable healing capacity, insufficient oral hygiene, incomplete jawbone growth, patient uncooperative and not motivated, abuse of drugs or alcohol, psychosis, prolonged functional disorders which resist any treatment with medications, xerostomia, weakened immunological system, diseases which require the use of steroids, endocrinological diseases, pregnancy.  The research does not involve minors, or women who are pregnant or breastfeeding.