title: Astra Tech, Brånemark, and ITI implants in the rehabilitation of partial edentulism: two-year results.
abstract: OBJECTIVE
  To explore the soft tissue, marginal bone, and prosthetic complications (if any) of Astra Tech, Brånemark, and ITI implants supporting fixed prostheses during an observation period of 2 years.
  
  
  METHODS
  The study comprised 26 patients, who received 42 Astra Tech, 36 Brånemark, and 29 ITI implants. After 3 months of healing, abutment connections were performed for Astra Tech and Brånemark implants, and fixed prostheses were delivered to the patients at 4 months. At 6-month, 1-year, and 2-year recall appointments, plaque index, periimplant inflammation index, and bleeding index scores, were recorded. The marginal bone levels were also measured at 2-year recall by means of radiographic evaluation, and prosthetic complications were recorded throughout the study.
  
  
  RESULTS
  All implants survived during the 2-year observation period. The plaque index and periimplant inflammation index scores around Brånemark implants were higher than ITI and Astra Tech implants in the first year of function (P > 0.05). Marginal bone loss around ITI and Astra Tech implants was similar at 2 years (P > 0.05). The marginal bone loss around Brånemark implants was higher than Astra Tech implants (P < 0.05) but similar to ITI implants at 2-year recall appointment (P > 0.05). Fixed prostheses supported by ITI and Astra Tech implants did not experience prosthetic complications, and only 1 patient of the Brånemark group had porcelain veneer fracture.
  
  
  CONCLUSIONS
  Astra Tech, Brånemark, and ITI implants supporting fixed prostheses had same survival rates (100%) in this study. ITI and Astra Tech implants had similar changes in marginal bone levels, whereas Brånemark implants had higher marginal bone loss, particularly in the first year of function.
authors.affiliation: Department of Removable Prosthodontics, Faculty of Dentistry, Istanbul University, Capa, Istanbul, Turkey.
authors.forename: Hakan
authors.initials: H
authors.lastname: Bilhan
authors.forename: Omer
authors.initials: O
authors.lastname: Kutay
authors.forename: Selda
authors.initials: S
authors.lastname: Arat
authors.forename: Ali
authors.initials: A
authors.lastname: Cekici
authors.forename: Murat Cavit
authors.initials: MC
authors.lastname: Cehreli
mesh_terms: D016301:Alveolar Bone Loss / Q000000981:diagnostic imaging; D000044:Dental Abutments; D015921:Dental Implants; D003774:Dental Plaque Index; D003776:Dental Porcelain / Q000737:chemistry; D017267:Dental Prosthesis Design; D019094:Dental Prosthesis, Implant-Supported; D019232:Dental Restoration Failure; D003801:Dental Veneers; D005260:Female; D005500:Follow-Up Studies; D005884:Gingival Hemorrhage / Q000145:classification; D006801:Humans; D007576:Jaw, Edentulous, Partially / Q000534:rehabilitation* / Q000601:surgery; D008297:Male; D008875:Middle Aged; D010512:Periodontal Index; D010518:Periodontitis / Q000145:classification; D011859:Radiography; D016019:Survival Analysis; D016896:Treatment Outcome
chemical_list: D015921:Dental Implants; D003776:Dental Porcelain