Premium
Implant‐supported single‐tooth restorations. A 12‐year prospective study
Author(s) -
Donati Mauro,
Ekestubbe Annika,
Lindhe Jan,
Wennström Jan L.
Publication year - 2016
Publication title -
clinical oral implants research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.407
H-Index - 161
eISSN - 1600-0501
pISSN - 0905-7161
DOI - 10.1111/clr.12726
Subject(s) - medicine , dentistry , implant , crown (dentistry) , abutment , dental prosthesis , prospective cohort study , tooth loss , prosthesis , orthodontics , surgery , civil engineering , oral health , engineering
Objective The aim of this study was to evaluate prospectively the 12‐year outcome of implant‐supported single‐tooth restorations. Material and methods Originally 45 self‐tapping Astra Tech TiOblast ® ST ‐implants were installed by a two‐stage protocol in 40 subjects requiring single‐tooth prosthetic replacement for a missing tooth. Clinical and radiologic examinations were performed at completion of the prosthetic treatment 4–7 months after implant installation surgery and after 5 and 12 years in function. Results At 12 years 31 patients and 35 implants were available for evaluation. The overall failure rate after 12 years was 10.3% on the subject level and 9.1% on the implant level. The mean bone loss amounted to 0.67 mm (SD 2.20) on a subject level and 0.47 mm (1.72) on an implant level. Three subjects (10%) and three implants (8.6%) were diagnosed with peri‐implantitis. Five subjects had experienced technical complications; three incidences of loosening of the abutment retention screw during the first 5 years and two minor porcelain fracture of the crown (two patients) between 5‐ and 12‐years of follow‐up. Conclusion The findings reported in this 12‐year prospective case series suggest that the use of the Astra Tech dental implants may be a valid treatment alternative for single‐tooth replacement prostheses.