Clinical Study of Implants With Modified Surface Treatment

Inclusion Criteria: * complete lack of teeth in the lower jaw * decision of the investigator: the patient is appropriate for implantation, clinical conditions are sufficient (adequate soft tissue and bone conditions and occlusal position;) * the patient's consciousness is clear, understand the planned intervention. * the patient communicates well with the examiner and is able to understand and comply with the requirements of the test plan. * witten informed consent Exclusion Criteria: * Pregnant or lactating women * Women of childbearing potential, unless she uses effective birth control until the completion of the final radiological examination, and for another 4 weeks after that. * A disease (including, but not limited to metabolic, hematological, kidney, liver, lung, neurological, endocrine, cardiac, infectious and gastrointestinal disease), which -in the opinion of the investigator- significantly affects the health of the examined person and/or exposes to an unacceptably high risk the person receiving the implantation treatment. * Malignant disease in the medical history in the preceding 24 months. * Known HIV, hepatitis B or hepatitis C, or any other considered viral infection relevant by the examiner known at the tome of randomization * A medical or psychiatric illness which, in the opinion of the investigator, excludes that the participant adheres to the protocol, or complete the study according to the protocol. * Participation in an other interventional clinical study within 6 months prior to treatment. * Known allergy to the implant or to the invetigational template or any of its components. * Limitation of mouth opening, which make unpossible to complete the procedure, based on the opinion of the investigator * Increased pharyngeal reflex, reduced ability to tolerate intraoral manipulation * Radiotherapy, previous irradiation of the jawbones * INR \> 2.5 * Immunosuppressed patient * previous or current bisphosphonate treatment * Known alcohol or drug abuse * Heavy smoking (≥ 20 cigarettes per day, or another form of smoking, used in an equivalent amount) * Untreated periodontitis * Local infection of the implant in the planned area * Lack of dental hygiene, e.g. not removed radixes, plaque and calculus, or radiologically detectable potential periapical focus (also in asymptomatic case ) * Insufficient or poor oral hygiene * Transient infectious state, with or without fever