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ORIGINAL ARTICLE
Year : 2019  |  Volume : 16  |  Issue : 1  |  Page : 18-23

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


1 Department of Prosthodontics, Dental Research Center, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
2 Department of Periodontics, Dental Implants Research Center, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
3 Department of Prosthodontics, Faculty of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
4 Department of Prosthodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran

Correspondence Address:
Dr. Faezeh Atri
Department of Prosthodontics, School of Dentistry, Tehran University of Medical Sciences, North Karegar Street, Tehran
Iran
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/1735-3327.249557

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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.


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