title: Clinical investigation on axial versus tilted implants for immediate fixed rehabilitation of edentulous arches: preliminary results of a single cohort study.
abstract: OBJECTIVE
  The purpose of this clinical investigation was to evaluate full-arch fixed-dental restorations supported by immediate loaded axial and tilted implants in a single-cohort study. Survival rate of axial and tilted implants was compared.
  
  
  METHODS
  From 2006 to 2010, 30 patients were recruited and treated with dental implants. Provisional fixed-dental prostheses were screw-retained over axial or axial and tilted implants within 24 hours after surgery. Follow-ups at 6, 12, and 24 months and annually up to 5 years were scheduled, and radiographic evaluation of peri-implant bone level changes was conducted.
  
  
  RESULTS
  Thirty patients (20 females and 10 males) were followed up for an average of 44 months (range 18-67 months). Six patients received both upper and lower implant rehabilitations, resulting in 36 restorations. A total of two hundred two implants were placed (maxilla = 118; mandible = 84) and 46% of the fixtures were evaluated at the 4-year recall. Four axial implants were lost in three patients, leading to 98.02% implant (97.56% axial implants and 100% tilted implants) and 100% prosthetic cumulative survival rate, respectively. No significant difference in marginal bone loss was found between tilted and axial implants in both jaws at 1-year evaluation.
  
  
  CONCLUSIONS
  Midterm results confirmed that immediate loading of axial and tilted implants provides a viable treatment modality for the rehabilitation of edentulous arches.
authors.affiliation: Implant Department, Università di Foggia, Foggia, Italy; private practice, Modena and Sassuolo, Modena, Italy.
authors.forename: Alessandro
authors.initials: A
authors.lastname: Agnini
authors.forename: Andrea Mastrorosa
authors.initials: AM
authors.lastname: Agnini
authors.forename: Davide
authors.initials: D
authors.lastname: Romeo
authors.forename: Manuele
authors.initials: M
authors.lastname: Chiesi
authors.forename: Leon
authors.initials: L
authors.lastname: Pariente
authors.forename: Christian F J
authors.initials: CF
authors.lastname: Stappert
mesh_terms: D015921:Dental Implants; D017267:Dental Prosthesis Design; D019094:Dental Prosthesis, Implant-Supported; D005260:Female; D006801:Humans; D057893:Immediate Dental Implant Loading / Q000379:methods*; D007575:Jaw, Edentulous / Q000534:rehabilitation*; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D011862:Radiography, Panoramic; D016896:Treatment Outcome
chemical_list: D015921:Dental Implants