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Accuracy and primary stability of tapered or straight implants placed into fresh extraction socket using dynamic navigation: a randomized controlled clinical trial

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Abstract

Objectives

To compare the accuracy and primary stability of tapered and straight implants undergoing immediate implant placement with dynamic navigation.

Materials and methods

Patients with compromised anterior teeth in maxilla were recruited and allocated randomly into (1) tapered implant group (TI group) and (2) straight implant group (SI group). Implants were inserted into fresh sockets with dynamic navigation. Three-dimensional platform deviation, apex deviation, angular deviation, insertion torque value (ITV) and implant stability quotient (ISQ) were recorded.

Results

Twenty patients with 20 implants were included. The overall platform, apex, and angular deviation were 0.87 ± 0.35 mm, 0.81 ± 0.34 mm, and 2.40 ± 1.31°, respectively. The accuracy was 0.86 ± 0.26 mm, 0.76 ± 0.33 mm, and 2.49 ± 1.54° for TI, and 0.89 ± 0.44 mm, 0.88 ± 0.36 mm, and 2.31 ± 1.01° for SI, with no significant difference (p = 0.85, 0.45, 0.76). Sagittal root position classification (SRP) class I may obtain greater error in numerical values in straight implants (0.97 ± 0.47 mm vs. 0.6 ± 0.16 mm, 0.92 ± 0.36 mm vs. 0.73 ± 0.36 mm, 2.48 ± 1.19° vs. 1.71 ± 0.14°). The overall ISQ was 60.74. ISQ was 60.48 for TI and 60.96 for SI, with no significant difference. Acceptable ITV (> 15 Ncm) was achieved in most of the included patients (SI 7/10, TI 9/10).

Conclusions

High accuracy and primary stability of immediate implant placement could be achieved both in tapered and straight implants with dynamic navigation systems.

Clinical relevance

Tapered and straight implants did not reach a consensus on which was better in immediate implant regarding to accuracy and primary stability. Our study demonstrated implant macrodesign did not affect accuracy and primary stability in immediate implant using dynamic navigation.

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Acknowledgements

The authors would like to thank Xuhui Zhang (Stanford University, Ph.D. in Operation Research) for statistical consulting and language editing.

Funding

This work was financially supported by Shanghai Clinical Research Center for Oral Diseases (19411950100) and Clinical Research Program of Ninth People’s Hospital affiliated Shanghai Jiao Tong University School of Medicine (JYLJ201909).

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Author notes

  1. Shi-Min Wei and Jun-Yu Shi contributed equally to this work

Authors and Affiliations

  1. Department of Oral and Maxillo-Facial Implantology, Shanghai Ninth People’s Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, National Clinical Research Center for Oral Diseases, Shanghai Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China

    Shi-Min Wei, Jun-Yu Shi, Shi-Chong Qiao, Xiao Zhang, Hong-Chang Lai & Xiao-Meng Zhang

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  1. Shi-Min Wei
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Contributions

Concept/design: X.M.Z, H.C.L, and S.M.W. Surgery operation: J.Y.S. Data analysis/interpretation: S.M.W. Drafting article: S.M.W, J.Y.S, S.C.Q, and X.Z. Critical revision of article: X.M.Z and H.C.L. Statistics: X.Z. Data collection: S.C.Q. All authors read and approved the final manuscript.

Corresponding authors

Correspondence to Hong-Chang Lai or Xiao-Meng Zhang.

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Ethics approval

All procedures performed in studies involving human participants were in accordance with the ethical standards of Shanghai Ninth People’s Hospital, School of Medicine, Shanghai Jiao Tong University (approval number: SH9H-2020-T410-2) and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.

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The authors declare that they have no conflict of interest.

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Wei, SM., Shi, JY., Qiao, SC. et al. Accuracy and primary stability of tapered or straight implants placed into fresh extraction socket using dynamic navigation: a randomized controlled clinical trial. Clin Oral Invest 26, 2733–2741 (2022). https://doi.org/10.1007/s00784-021-04247-2

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  • DOI: https://doi.org/10.1007/s00784-021-04247-2

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