title: Immediate loading of trabecular metal-enhanced titanium dental implants: interim results from an international proof-of-principle study.
abstract: OBJECTIVE
  A 3-year proof-of-principle study was initiated to evaluate the clinical efficacy of immediately loading titanium dental implants with surfaces enhanced with porous tantalum trabecular metal (PTTM). First-year interim results are presented.
  
  
  METHODS
  Healthy, partially edentulous patients (n = 30) were enrolled and treated per protocol (minimum insertion torque: ≥35 Ncm) with 37 implants placed in one or two premolar or molar locations in either jaw (study group). Implants were immediately provisionalized out of occlusion with single acrylic crowns. After 7 to 14 days of soft tissue healing, implants were definitively restored in occlusion with ceramometal crowns. Because most study group implants (54.1%, n = 20) had less than 1 year of clinical follow-up, this interim analysis was limited to the first 22 consecutively placed implants in 17 subjects (10 women and 7 men) who completed 1 year of clinical follow-up to date (focus group).
  
  
  RESULTS
  To date, one implant failed to integrate in the study group (survival = 97.3%, n = 36/37). Focus group implants achieved 100% (n = 22/22) survival with 0.43 ± 0.41 mm of mean marginal bone loss. There were no serious complications.
  
  
  CONCLUSIONS
  Early clinical findings indicated that immediate loading of PTTM implants was safe and effective under the controlled study conditions.
authors.affiliation: Private practice in implantology and periodontology, Forchheim, Germany; Department of Oral Surgery, Goethe University, Frankfurt, Germany.
authors.forename: Marcus
authors.initials: M
authors.lastname: Schlee
authors.forename: W Peter
authors.initials: WP
authors.lastname: van der Schoor
authors.forename: Alexandra R M
authors.initials: AR
authors.lastname: van der Schoor
mesh_terms: D000328:Adult; D000368:Aged; D003442:Crowns; D015921:Dental Implants; D017267:Dental Prosthesis Design; D019094:Dental Prosthesis, Implant-Supported; D005260:Female; D006801:Humans; D057893:Immediate Dental Implant Loading / Q000379:methods; D008297:Male; D008875:Middle Aged; D016062:Porosity; D013635:Tantalum; D014025:Titanium; D016896:Treatment Outcome
chemical_list: D015921:Dental Implants; D013635:Tantalum; D014025:Titanium
keywords: bone ingrowth; osseoincorporation; porous tantalum; trabecular metal