The loss of teeth, and consequently, prosthodontic rehabilitation pose new challenges to the stomatognathic system, which alter masticatory function. Masticatory efficiency decreases drastically in edentulous patients. Implant supported mandibular overdentures offer edentulous patients a better retained and more stable prosthesis resulting in improved masticatory function and patient satisfaction as compared with conventional complete dentures. But the minimum number of implants required satisfactorily supporting and retaining a mandibular over denture still remains to be evaluated. Lower...