title: Five-year statistical and clinical observations with the IMZ two-stage osteointegrated implant system.
abstract: This study evaluated patients who were reconstructed with the IMZ system, which consists of a cylindrical implant with an intramobile element for stress relief. It is placed through a two-stage surgical procedure resulting in osteointegration. During a 5-year period, 1,059 implants were placed in 322 patients. Twenty-one implants were lost to follow-up. A total of 28 implants failed over the 5-year period, of which 9 had not integrated at stage 2 surgery. Of the remaining implants, 19 failed primarily for periodontal and prosthetic reasons. The life table method was used for statistical analysis. The 5-year survival rate of all IMZ implants was 95%. Seventy-five percent of the implants were placed to restore partial edentulism, with a survival rate of 96%. The survival rate for totally edentulous patients was also 96%. Forty-four percent of the implants were placed in the maxilla, with a survival rate of 92%. The survival rate in the mandible was 99%. Sixty-six percent of the implants were placed in women, with a survival rate of 94%. The survival rate in men was 98%. Major factors that positively influenced long-term survival were use of the longest and largest-diameter implants appropriate for the clinical situation.
authors.affiliation: Implant Reconstructive Surgery, Mt. Sinai Medical Center, Cleveland, Ohio.
authors.forename: C A
authors.initials: CA
authors.lastname: Babbush
authors.forename: M
authors.initials: M
authors.lastname: Shimura
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D015921:Dental Implants / Q000706:statistics & numerical data*; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D015993:Life Tables; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D011475:Prosthesis Failure; D012744:Sex Ratio; D016019:Survival Analysis; D016896:Treatment Outcome
chemical_list: D015921:Dental Implants