title: Resonance frequency analysis and damping capacity assessment. Part 2: peri-implant bone loss follow-up. An in vitro study with the Periotest and Osstell instruments.
abstract: OBJECTIVE
  We compared the performance of damping capacity assessment (Periotest device) to resonance frequency analysis (Osstell device) in the assessment of peri-implant bone loss in an in vitro experiment.
  
  
  METHODS
  Screw-type oral implants were polymerized into acrylic blocks. Peri-implant bone loss was simulated by successively removing defined portions of material surrounding the implants in millimeter increments. Measurement values of both devices were compared by assessing the associated measurement errors, by calculating correlation analyses and drawing scatterplots, and by means of regression analysis referring to increasing bone loss.
  
  
  RESULTS
  Both devices produced comparable results suggesting agreement of the measured implant stability values to the actual loss of peri-implant resin. There was a noticeable correlation of the Periotest and Osstell implant stability values.
  
  
  CONCLUSIONS
  The results of this experiment suggest agreement in predicting the actual implant stability with both the instruments with the Osstell instrument being the more precise device.
authors.affiliation: Department of Prosthodontics, University of Tübingen, Tübingen, Germany. stefan.lachmann@med.uni-tuebingen.de
authors.forename: Stefan
authors.initials: S
authors.lastname: Lachmann
authors.forename: Johannes Yves
authors.initials: JY
authors.lastname: Laval
authors.forename: Berthold
authors.initials: B
authors.lastname: Jäger
authors.forename: Detlef
authors.initials: D
authors.lastname: Axmann
authors.forename: German
authors.initials: G
authors.lastname: Gomez-Roman
authors.forename: Martin
authors.initials: M
authors.lastname: Groten
authors.forename: Heiner
authors.initials: H
authors.lastname: Weber
mesh_terms: D000180:Acrylic Resins; D016301:Alveolar Bone Loss / Q000209:etiology*; D000704:Analysis of Variance; D003748:Dental Equipment; D015921:Dental Implants / Q000009:adverse effects*; D017267:Dental Prosthesis Design; D017268:Dental Prosthesis Retention; D019232:Dental Restoration Failure; D003799:Dental Stress Analysis / Q000295:instrumentation; D049691:History, Medieval; D016014:Linear Models; D010474:Percussion / Q000295:instrumentation; D015203:Reproducibility of Results; D018709:Statistics, Nonparametric; D014732:Vibration
chemical_list: D000180:Acrylic Resins; D015921:Dental Implants