Comparative investigation of primary stability of four different dental implants in low-density bone model

• Published in: Dental research journal 2019-01, Vol.16 (1), p.18-23
• Main Authors: Nokar, Saied, Rasouli-Ghahroudi, Amirali, Shidvash, Elham, Atri, Faezeh
• Format: Article
• Language: English
• Subjects: Biomechanics; Bone density; Bone implants; Dental implants; Dental prosthetics; Dental restorative materials; Health aspects; immediate dental implant loading; Manufacturers; Original; resonance frequency analysis; Standard deviation; Surgeons; Teeth; torque; Transplants & implants
• ISSN: 1735-3327; 2008-0255
• DOI: 10.4103/1735-3327.249557

Background: Primary stability is one of the prerequisites of immediate loading. The aim of this study was to compare the primary stability of four different implant systems in low-density bone models. Materials and Methods: In this in vitro experimental study, 20 fixtures from four implant body designs were selected: Zimmer Tapered Screw-Vent (ZTSV), NobleReplace Tapered (NRT), Replace Select Tapered (RST), and Dentium SuperLine (DSL). Fixtures were inserted in low-density bone models according to manufacturer drilling protocol by one surgeon. Measurement of insertion torque value (ITV), resonance frequency analysis (implant stability quotient [ISQ]), and reverse torque value (RTV) was recorded for each fixture. The data were analyzed with one-way ANOVA and post hoc tests (Tukey honestly significant difference) (P < 0.05). Results: ZTSV had significantly lower amount of insertion torque in comparison to other systems (P = 0.045). RTV was significantly lower in ZTSV in comparison to DSL and NRT (P = 0.004). ISQ value in NRT (ISQ = 67) was significantly higher than other systems (P = 0.000). The lowest amount of ISQ was in RST system (ISQ = 53) with significant difference (P = 0.000). Conclusion: This study demonstrated that primary stability of different implant systems was not comparable and implant design was effective on ITV, RTV, and ISQ.