Immediately loaded implants in a patient with involuntary mandibular movements: a clinical report.

Immediately loaded implant prostheses have been used to successfully rehabilitate completely edentulous arches. Risk factors for successful treatment have not included involuntary mandibular movements. The treatment was completed on a patient with a history of neuroleptic medications who had remaining mandibular teeth extracted and then developed involuntary mandibular movements. The patient was dissatisfied with a mandibular removable prosthesis and wanted a fixed prosthesis. The immediate implant loading of a complete arch fixed prosthesis was delivered, and the patient lost 3 of the 6 implants. The patient continued to have problems with her definitive prostheses as the symptoms of her involuntary mandibular movements worsened.