title: Influence of prosthetic parameters on peri-implant bone resorption in the first year of loading: a multi-factorial analysis.
abstract: BACKGROUND
  The first year of prosthetic loading is crucial to peri-implant bone levels; however, contributing factors are yet barely understood.
  
  
  OBJECTIVE
  The purpose of the study is to investigate the influence of patient-, implant-, and prosthetic-related parameters on marginal bone resorption in partially edentulous patients within the first year of prosthetic loading.
  
  
  METHODS
  This retrospective multifactorial analysis involved the following influencing factors: patient gender and age, implant diameter, implant location and neck design, insertion torque, insertion depth, splinted versus single-tooth restorations, crown height space, and crown-to-implant ratio.
  
  
  RESULTS
  Mean peri-implant bone resorption around 200 dental implants was 0.98 ± 0.76 mm and significantly correlated to higher implant insertion depth (p < .001), whereas no association to prosthetic parameters could be observed.
  
  
  CONCLUSIONS
  Within the limits of the present analysis, it can be concluded that apical implant positioning may constitute a relevant determinant of early peri-implant bone resorption.
authors.affiliation: Department of Oral Surgery, Bernhard Gottlieb University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria.
authors.forename: Markus
authors.initials: M
authors.lastname: Hof
authors.forename: Bernhard
authors.initials: B
authors.lastname: Pommer
authors.forename: Nizama
authors.initials: N
authors.lastname: Zukic
authors.forename: Christoph
authors.initials: C
authors.lastname: Vasak
authors.forename: Martin
authors.initials: M
authors.lastname: Lorenzoni
authors.forename: Werner
authors.initials: W
authors.lastname: Zechner
mesh_terms: D000328:Adult; D000368:Aged; D001862:Bone Resorption / Q000503:physiopathology*; D003442:Crowns; D003758:Dental Implantation, Endosseous; D017267:Dental Prosthesis Design; D019094:Dental Prosthesis, Implant-Supported; D019232:Dental Restoration Failure; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D012307:Risk Factors; D016896:Treatment Outcome
keywords: clinical study; crestal bone resorption; implant stability; implant surface; implant-supported crown; osseointegration; radiographs; tapered implants