title: A comparative study of the Osstell™ versus the Osstell Mentor™ to evaluate implant stability in human cadaver mandibles.
abstract: The aim of this study was to assess the primary stability of dental implants by resonance frequency analysis (RFA) using the Osstell™ and Osstell Mentor™ devices and to investigate the reproducibility and comparability of the results obtained with these devices. Twenty-four Straumann implants (Straumann AG, Basel, Switzerland) were placed in the anterior mandible of 12 fresh edentulous human cadaver mandibles. The implant stability quotients (ISQs) were measured with the Osstell™ and Osstell Mentor™ when implants were inserted at 50% of their length and following their complete insertion. The Osstell™ device measured lower scores compared with the Osstell Mentor™. This was significant for the full position (mean difference = 9·9), t (11) = 7·4, P < 0·001 and for the halfway position (mean difference = 5·9), t (11) = 2·41, P = 0·03. In conclusion, the Osstell™ produced relatively lower ISQ scores than the Osstell Mentor™.
authors: Department of Oral and Maxillofacial Surgery, Academic Medical Center, Amsterdam and Academic Center for Dentistry (ACTA), University of Amsterdam, Amsterdam, The Netherlands.
authors: R S
authors: RS
authors: Snijders
authors: A J
authors: AJ
authors: van Wijk
authors: J A
authors: JA
authors: Lindeboom
mesh_terms: D002102:Cadaver; D003758:Dental Implantation, Endosseous / Q000295:instrumentation / Q000592:standards*; D015921:Dental Implants / Q000592:standards*; D017267:Dental Prosthesis Design / Q000592:standards*; D017268:Dental Prosthesis Retention / Q000592:standards*; D019094:Dental Prosthesis, Implant-Supported / Q000295:instrumentation / Q000592:standards*; D006801:Humans; D008334:Mandible / Q000601:surgery*; D015203:Reproducibility of Results; D016896:Treatment Outcome; D014732:Vibration / Q000009:adverse effects
chemical_list: D015921:Dental Implants
keywords: Osstell Mentor™; Osstell™; implant stability; implant stability quotient; reproducibility