Single-implant Overdentures Retained by the Novaloc Attachment System

Inclusion Criteria: * Not have had a tooth extraction within the past six months * Request implant stabilization of a mandibular conventional complete denture * Have clinically acceptable maxillary and mandibular complete dentures * Have adequate bone in the anterior mandible for the placement of a single 3.3 mm wide implant in the midline * Be able to maintain adequate oral hygiene and clean dentures; * Present no systemic conditions for which minor oral surgery would be counter-indicated * Have an adequate understanding of written and spoken English or French; * Be capable of giving written informed consent Exclusion Criteria: * Severe/serious illness that requires frequent hospitalization * Impaired cognitive function * Unable to return for evaluations/study recalls * Have a history of radiation therapy to the orofacial region * Have specific conditions that may jeopardize the treatment, such as alcoholism or smoking (\>10 cigarettes/day) * Have acute or chronic symptoms of parafunctional or temporomandibular disorders * Previous dental implant treatment Following radiographic exam, investigators will exclude volunteers with bony pathologic lesions, less than 11 mm of minimum vertical mandibular bone height in the midline or width for planned implants, evident endosseous vascular structures or mandibular ridges with remaining alveolar sockets