BACKGROUND: Primary stability has a relevant role in the long-term success of dental implants. A quantitative method for the measurement of implant stability has been introduced (resonance frequency analysis [RFA]). Information about the significance of RFA measurements and about the relationship between RFA values and their association with implant osseointegration, success, or failure is important from a clinical point of view. PURPOSE: The aim of the present histological and histomorphometric study was to see if a correlation existed between the bone-implant contact (BIC) percentage of retrieved human implants and RFA values. MATERIALS AND METHODS: Seven implants inserted in the posterior mandible, with a sandblasted and acid-etched surface and retrieved after a 6-month period, were evaluated in the present study. These seven implants had been retrieved for different causes. All these implants were submerged and were retrieved with a 5-mm trephine bur and immersed in 10% buffered formalin to be processed for histology. RESULTS: A statistically significant correlation could be detected between implant stability quotient and BIC (p=.016). CONCLUSIONS: Even if the relationship between bone structure and RFA is still not fully understood, in our study, a statistically significant correlation was found between RFA and BIC values. Further studies are needed to evaluate a correlation of RFA and BIC in human implants retrieved after a range of healing periods.
BACKGROUND: Primary stability has a relevant role in the long-term success of dental implants. A quantitative method for the measurement of implant stability has been introduced (resonance frequency analysis [RFA]). Information about the significance of RFA measurements and about the relationship between RFA values and their association with implant osseointegration, success, or failure is important from a clinical point of view. PURPOSE: The aim of the present histological and histomorphometric study was to see if a correlation existed between the bone-implant contact (BIC) percentage of retrieved human implants and RFA values. MATERIALS AND METHODS: Seven implants inserted in the posterior mandible, with a sandblasted and acid-etched surface and retrieved after a 6-month period, were evaluated in the present study. These seven implants had been retrieved for different causes. All these implants were submerged and were retrieved with a 5-mm trephine bur and immersed in 10% buffered formalin to be processed for histology. RESULTS: A statistically significant correlation could be detected between implant stability quotient and BIC (p=.016). CONCLUSIONS: Even if the relationship between bone structure and RFA is still not fully understood, in our study, a statistically significant correlation was found between RFA and BIC values. Further studies are needed to evaluate a correlation of RFA and BIC in human implants retrieved after a range of healing periods.
Authors: Giovanni Falisi; Massimo Galli; Pedro Vittorini Velasquez; Juan Carlos Gallegos Rivera; Carlo Di Paolo Journal: Ann Stomatol (Roma) Date: 2013-06-25
Authors: Uta Scherer; Marcus Stoetzer; Martin Ruecker; Nils-Claudius Gellrich; Constantin von See Journal: Clin Oral Investig Date: 2014-10-30 Impact factor: 3.573
Authors: Po-Chun Chang; Yang-Jo Seol; Noboru Kikuchi; Steven A Goldstein; William V Giannobile Journal: J Biomed Mater Res B Appl Biomater Date: 2010-07 Impact factor: 3.368