title: Efficacy of threaded hydroxyapatite-coated implants placed in the anterior mandible.
abstract: A data subset from an ongoing prospective multicenter clinical study of threaded hydroxyapatite-coated implants was evaluated to assess safety and efficacy of the implants in anterior maxillary regions when used to support fixed prostheses. Observations were recorded before surgery, at first-stage surgery, at second-stage surgery, at loading, and at quarterly post-restoration prophylactic exams and annual comprehensive patient visits. Of 2,062 implants restored in 720 patients in the parent study, a total of 95 implants in 54 patients met the criteria for inclusion into this portion. Implant failure criteria included mobility, radiographic evidence of bone loss greater than one-third the length of the implant or peri-implant radiolucency, fracture, exfoliation, removal for any reason, and patient reported pain upon palpation. Soft tissue indices were monitored as part of the study. Post-restoration implant performance was analyzed using life-table methodology. No failures were observed before prosthodontic rehabilitation. Three implants failed during an observation period of up to 5 years after completion of prosthodontic treatment. The Cutler-Ederer life table success rate after 5 years was 93.4 percent. Results of this investigation suggest that threaded hydroxyapatite-coated implants are safe and effective when placed in anterior maxillary regions to support fixed prostheses.
authors.affiliation: Department of Oral and Maxillofacial Surgery, School of Dental Medicine, University of Pennsylvania, Philadelphia 19104-6003, USA.
authors.forename: A U
authors.initials: AU
authors.lastname: Buchs
authors.forename: J
authors.initials: J
authors.lastname: Hahn
authors.forename: D M
authors.initials: DM
authors.lastname: Vassos
mesh_terms: D000328:Adult; D000368:Aged; D003481:Cuspid; D003758:Dental Implantation, Endosseous; D015921:Dental Implants; D017267:Dental Prosthesis Design; D017268:Dental Prosthesis Retention; D017886:Durapatite; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D007180:Incisor; D015993:Life Tables; D008297:Male; D008437:Maxilla / Q000601:surgery*; D008875:Middle Aged; D010512:Periodontal Index; D010514:Periodontal Pocket / Q000473:pathology; D011446:Prospective Studies; D011475:Prosthesis Failure; D016896:Treatment Outcome
chemical_list: D015921:Dental Implants; D017886:Durapatite