title: Correlation between resonance frequency, insertion torque and bone-implant contact in self-cutting threaded implants.
abstract: The aim of this study was to evaluate the correlation between resonance frequency analysis (RFA) values and the histomorphometric bone-implant contact (BIC) immediately after insertion of the implant. Additionally, it was examined to define which extent peak insertion torque (PIT) was correlated with the latter measurements. 15 Xive®S plus root from dental implants were inserted in fresh porcine frontal bones. The insertion torque was measured with the Kavo Intrasurg 300 surgical unit. RFA connector was coupled to the implants and the mean value of 20 consecutive RFA measurements was calculated via Osstell®ISQ device. The implants were removed with the adjacent bone with a band saw. The blocks were processed for undecalcified histology. Two perpendicular longitudinal middle sections of the implant were made and stained with toluidine blue and the BIC was assessed by histomorphometry. The correlation coefficient (Spearman) between RFA and BIC was R = 0.579 (p = 0.026, F test). The correlation between PIT and BIC (0.33, p > 0.05) and PIT and RFA (0.153, p > 0.05) was not statistically significant. The present data confirmed a moderate and statistically positive correlation between RFA and BIC. No correlation between BIC and PIT and PIT and RFA was observed. Further studies considering different bone qualities would be beneficial in understanding the relation between RFA and BIC.
authors.affiliation: Department of Oral and Maxillofacial Surgery, Christian-Albrecht-Universität zu Kiel, Kiel, Germany.
authors.forename: Yahya
authors.initials: Y
authors.lastname: Açil
authors.affiliation: Zahnärztliche Gemeinschaftspraxis Dres., Isabelle und Jan Sievers, Waiblingen, Germany.
authors.forename: Jan
authors.initials: J
authors.lastname: Sievers
authors.affiliation: Gülhane Military Medical Academy, Centre of Dental Sciences, Etlik Keçiören, 06010, Ankara, Turkey. aydingulses@gmail.com.
authors.forename: Aydin
authors.initials: A
authors.lastname: Gülses
authors.affiliation: Center for Implantology, Private Practice, Duisburg, Germany.
authors.forename: Mustafa
authors.initials: M
authors.lastname: Ayna
authors.affiliation: Department of Oral and Maxillofacial Surgery, Christian-Albrecht-Universität zu Kiel, Kiel, Germany.
authors.forename: Jörg
authors.initials: J
authors.lastname: Wiltfang
authors.affiliation: Clinic for Oral and Maxillofacial Surgery, Rotes Kreuz Krankenhaus Kassel, Kassel, Germany.
authors.forename: Hendrik
authors.initials: H
authors.lastname: Terheyden
mesh_terms: D000818:Animals; D000069343:Bone-Implant Interface / Q000502:physiology*; D015921:Dental Implants; D017267:Dental Prosthesis Design; D017268:Dental Prosthesis Retention; D005624:Frontal Bone / Q000601:surgery; D057893:Immediate Dental Implant Loading / Q000379:methods*; D020007:Implants, Experimental; D066298:In Vitro Techniques; D000074269:Resonance Frequency Analysis; D013499:Surface Properties; D013552:Swine; D019415:Torque
chemical_list: D015921:Dental Implants
keywords: Bone-implant contact; Correlation; Dental implants; Histomorphometric measurements; Immediate loading; Insertion torque; Primary stability; Resonance frequency analysis