title: Experimental Peri-Implantitis around Different Types of Implants - A Clinical and Radiographic Study in Dogs.
abstract: BACKGROUND
  The influence of the implant micro and macrostructure on peri-implantitis is not fully understood.
  
  
  OBJECTIVE
  To determine the effect of ligature-induced peri-implantitis on three commercially available implant types.
  
  
  METHODS
  Five beagle dogs were used. Two months following tooth extraction, three different implant types (BIOMET 3i T3, BIOMET 3i, Palm Beach Gardens, FL, USA; Straumann Bone Level, Straumann GmbH, Basel, Switzerland; Nobel Replace Tapered, Nobel Biocare, Gothenburg, Sweden) were placed in a randomized fashion in each hemi-mandible. Peri-implantitis was initiated by ligature placement and soft diet. Ligatures were added every 2 weeks for a total of four ligature advancements. After 2 weeks, the ligatures were removed, oral hygiene measures initiated for 3 weeks, and clinical (probing depth, mucosal recession, bleeding on probing), intrasurgical (intrasurgical defect depth, intrasurgical defect width), and radiographic (radiographic bone level) parameters assessed.
  
  
  RESULTS
  Nobel Replace Tapered implants showed significantly higher intrasurgical defect depth, intrasurgical defect width, probing depths, and radiographic bone level when compared to BIOMET 3i T3 or Straumann Bone Level implants. Straumann Bone Level implants showed largely similar clinical outcomes to BIOMET 3i T3. No significant differences between the groups were observed for mean mucosal recession.
  
  
  CONCLUSIONS
  In an experimental peri-implantitis model, Nobel Replace Tapered implants are associated with pronounced tissue loss.
authors.affiliation: Department of Periodontology, Julius-Maximilians-University Würzburg, Würzburg, Germany.
authors.forename: Stefan
authors.initials: S
authors.lastname: Fickl
authors.affiliation: Department of Periodontology, Operative and Preventive Dentistry, University of Bonn, Bonn, Germany.
authors.forename: Moritz
authors.initials: M
authors.lastname: Kebschull
authors.affiliation: Department of General and Implant Dentistry, Faculty of Medicine and Dentistry, University of Murcia, Murcia, Spain.
authors.forename: José Luis
authors.initials: JL
authors.lastname: Calvo-Guirado
authors.affiliation: Private Office, Munich, Germany.
authors.forename: Markus
authors.initials: M
authors.lastname: Hürzeler
authors.affiliation: Private Office, Munich, Germany.|Department of Periodontology, Center of Dentistry and Oral Medicine (Carolinum), Johann Wolfgang Goethe-University Frankfurt am Main, Frankfurt, Germany.
authors.forename: Otto
authors.initials: O
authors.lastname: Zuhr
mesh_terms: D000818:Animals; D003758:Dental Implantation, Endosseous / Q000009:adverse effects; D015921:Dental Implants / Q000009:adverse effects*; D004195:Disease Models, Animal; D004285:Dogs; D057873:Peri-Implantitis / Q000000981:diagnostic imaging / Q000209:etiology* / Q000473:pathology; D011861:Radiography, Dental
chemical_list: D015921:Dental Implants
keywords: implant surface; peri-implant defect; peri-implant lesions