title: Dental implants and immediate loading: multivariate analysis of success factors.
abstract: OBJECTIVE
  The authors had for aim to examine factors potentially influencing the success of immediate implant placement and loading.
  
  
  METHODS
  One hundred and ninety-five consecutive patients (16.5 to 80.4 years of age) were provided with 310 prostheses supported by 896 immediately loaded implants. The mean follow-up was 27.5 months. Univariate and multivariate Cox regression was performed to analyze potential modifiers of implant success.
  
  
  RESULTS
  The overall implant success rate was 96.7%. The statistically significant modifiers of success on multivariate analysis (P<0.05) were duration of functional use (P<0.001), type of superstructure (P<0.001), implant-abutment connection (P<0.001), and maxilla versus mandible (P=0.026). None of the other investigated factors (age, gender, implant location/design/length) were statistically significant modifiers of success.
  
  
  CONCLUSIONS
  Our study results demonstrate high success rates for immediately loaded implants whatever types and superstructure used. Prosthetic designs and their implementation have a significant effect on the success rate of implant-supported restoration, with adjusted hazard ratios of up to 51. Maxilla versus mandible was the only significant non-external modifier when using an adjusted hazard ratio of 2.75.
authors.affiliation: Faculty of Mechanical Engineering and Marine Technology, Department of Material Science and Medical Engineering, University of Rostock, Rostock, Germany. dres.kopp@t-online.de
authors.forename: S
authors.initials: S
authors.lastname: Kopp
authors.forename: D
authors.initials: D
authors.lastname: Behrend
authors.forename: G
authors.initials: G
authors.lastname: Kundt
authors.forename: P
authors.initials: P
authors.lastname: Ottl
authors.forename: B
authors.initials: B
authors.lastname: Frerich
authors.forename: M
authors.initials: M
authors.lastname: Warkentin
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D015331:Cohort Studies; D015921:Dental Implants; D005260:Female; D006801:Humans; D057893:Immediate Dental Implant Loading; D007575:Jaw, Edentulous / Q000175:diagnosis / Q000453:epidemiology / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D011379:Prognosis; D012189:Retrospective Studies; D016896:Treatment Outcome; D055815:Young Adult
chemical_list: D015921:Dental Implants