title: A prospective evaluation of outcomes of two tapered implant systems.
abstract: The purpose of this prospective clinical study was to evaluate survival rate (SVR - i.e. fixtures still in place at the end of the observation period) and success rate (SCR - i.e. bone resorption around the implant neck) of two tapered implant systems. Both systems were equipped with a tapered connection, one requiring bone-level (BL) placement, while the other required soft-tissue-level (STL) placement. In the period between January 1996 and October 2011, 133 fixtures were inserted, 90 in females and 43 in males, with a mean age of 60±11 years. The mean post-surgical follow-up was 64±38 months. Several clinical parameters were evaluated as potential outcome conditioners. An SPSS program was used for statistical analysis and a Cox analysis was performed. The SVR was 100% since no fixtures were lost. SCR, expressed through the mean marginal bone loss, was 88%. No significant differences were found, for most of the variables investigated with the exception of bone grafting and implant type: STL implants showed a better clinical outcome than BL implants when bone grafting was performed simultaneously with implant placement. Tapered implants are reliable devices for oral rehabilitation of jaws.
authors.affiliation: Private practice, Rome, Italy.
authors.forename: M
authors.initials: M
authors.lastname: Andreasi Bassi
authors.affiliation: Private practice, Rome, Italy.
authors.forename: M A
authors.initials: MA
authors.lastname: Lopez
authors.affiliation: Private practice, Rome, Italy.
authors.forename: L
authors.initials: L
authors.lastname: Confalone
authors.affiliation: Department of Medical Sciences, University of Ferrara, Ferrara, Italy.
authors.forename: R M
authors.initials: RM
authors.lastname: Gaudio
authors.affiliation: Department of Biomedical Sciences and Specialist Surgeries, University of Ferrara, Ferrara, Italy.
authors.forename: L
authors.initials: L
authors.lastname: Lombardo
authors.affiliation: Department of Medicine and Surgery, University of Milan-Bicocca, Milan, Italy.
authors.forename: D
authors.initials: D
authors.lastname: Lauritano
mesh_terms: D016301:Alveolar Bone Loss; D003758:Dental Implantation, Endosseous; D015921:Dental Implants; D017267:Dental Prosthesis Design; D019232:Dental Restoration Failure; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D016896:Treatment Outcome
chemical_list: D015921:Dental Implants