Evaluation of Clinical Outcomes and Bone Loss around Titanium Implants with Oxidized Surface: Six‐Year Follow‐Up Results from a Prospective Case Series Study

Abstract

The aim of this prospective study was to assess long-term clinical outcomes and peri-implant bone level changes around oxidized implants supporting partial fixed rehabilitations. Twenty-two partially edentulous patients were included in the study. A total of 33 fixed rehabilitations were placed, supported by 54 titanium implants with oxidized microtextured surface. Prostheses were delivered after 3 and 6 months of implant placement in the mandible and maxilla, respectively. Patients were scheduled for follow-up at 6 and 12 months and then yearly. At each follow-up, plaque level and bleeding scores were assessed and periapical radiographs were taken. The main outcomes were prosthesis success, implant survival, implant success, and marginal bone level change. Three patients were excluded from the study because they did not attend the 1-year follow-up. Nineteen patients, accounting for 49 implants, were followed for at least 6 years after prosthesis delivery. The mean follow-up duration was 81.8 months (range 75-96 months). One mandibular single-tooth implant failed after 1 year in a smoker woman. Cumulative implant survival and success at 6 years were 98.0% and 95.9%, respectively. Prosthesis success was 96.7%. The mean peri-implant bone loss at 6 years was 0.76 ± 0.47 mm. Not significantly (p = .75) greater bone loss was found in the maxilla (0.78 ± 0.14 mm, n = 19) as compared with the mandible (0.74 ± 0.59 mm, n = 30). In the maxilla, bone loss was significantly greater around implants supporting partial prostheses as compared with single-tooth implants (p = .03). Full patient satisfaction was reported. Implants with oxidized microtextured surface may achieve excellent long-term clinical outcomes in the rehabilitation of partial edentulism.