Clinical Evaluation of the Mandibular Mini-Implant Overdenture

Inclusion Criteria: * Completely edentulous with last tooth extraction 2 years ago or longer. * Patients requesting implant stabilization of existing lower conventional denture. * Adequate space in anterior mandible for placement of 4 MDI implants. * Able to maintain adequate oral hygiene and keep dentures clean. * Healthy enough to have minor surgical procedures. * Have adequate understanding of written and spoken English or French. * Capable of providing written informed consent. Exclusion Criteria: * Not enough room in mandibular bone for implant height. * Has acute or chronic symptoms of parafunctional disorders. * History of radiotherapy to orofacial region. * Are or have been taking bisphosphonate IV or other medications (to be evaluated by the researcher). * Health conditions that may jeopardize treatment (to be evaluated by the researcher). * Unable or unwilling to return for evaluations or study recalls.