title: Clinical outcome of 215 transmucosal implants with a conical connection: a retrospective study after 5-year follow-up.
abstract: The purpose of this retrospective clinical study was to evaluate the survival rate (i.e. SVR  fixtures still in place at the end of the observation period) and success rate (i.e. SCR - bone resorption around implant neck) of an implant system characterized by cylindrical and tapered implants, both types of implant being equipped with a conical connection with an internal octagon (COC), both implant types having a 1.8 mm smooth neck, positioned above the bone crest level. A total of 65 subjects received 215 COCs between January 1996 and October 2011. All COCs were placed and restored by three experienced dental surgeons. The mean follow-up was 84±44 months. The patients involved in the study were both male (30) and female (35), of whom 30 were smokers (less than 20 cigarettes/day) and none was diabetic. The implants differed in terms of diameter and length, and were inserted both in the mandible (97) and in the maxilla (118). Sixty-seven implants were single tooth rehabilitations, and 148 prosthetic bridges. Fourteen had guided bone regeneration (GBR), and 10 were placed in post-extractive sites. Forty of the implants were provided with passing-screw abutments and 175 with full-screw abutments. The data were analyzed using descriptive statistics. None of the implants failed before prosthetic restoration, resulting in an SVR=100% after loading. The radiographic and clinical data revealed well-maintained, hard and soft tissue around the COCs, with an SCR=92.6%. Cox regression analyses did not detect any variables with statistical impact on the clinical outcome. In conclusion, Shiner XT implants are reliable tools for oral rehabilitation.
authors.affiliation: Private practice, Roma, Italy.
authors.forename: M A
authors.initials: MA
authors.lastname: Lopez
authors.affiliation: Private practice, Roma, Italy.
authors.forename: M
authors.initials: M
authors.lastname: Andreasi Bassi
authors.affiliation: Private practice, Roma, 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; D015921:Dental Implants; D017267:Dental Prosthesis Design; D019232:Dental Restoration Failure; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D012189:Retrospective Studies; D016896:Treatment Outcome
chemical_list: D015921:Dental Implants