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3D accuracy of implant positions in template-guided implant placement as a function of the remaining teeth and the surgical procedure: a retrospective study

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Abstract

Objective

The aim of this study was to investigate differences between the virtually planned and clinically achieved implant positions in completely template-guided implantations as a function of the type of edentulous space, the residual natural dentition, and the surgical implementation.

Materials and methods

Fifty-six patient cases with a total of 122 implants were evaluated retrospectively. The implantations were completely template-based. The data of the planned implant positions were overlaid with the actual clinical implant positions, followed by measurements of the 3D deviations in terms of coronal (xc) and apical distance, height (xh), and angulation (ang) and statistical analysis.

Results

The mean xc was 1.2 mm (SD 0.7 mm); the mean xa was 1.8 mm (SD 0.9 mm), the mean xh was 0.8 mm (SD 0.7 mm); and the mean ang was 4.8° (SD 3.1). The type of edentulous space and the jaw (maxilla/mandible) had no significant effect on the results in terms of implant positions. The presence of an adjacent natural tooth at the time of implantation had a significant influence on xh (p = 0.04) and ang (p = 0.05). No significant differences were found regarding the surgical approach for any of the parameters examined.

Conclusion

The results of our study are in the same range as those of other studies. Template-guided implantation offers a high degree of accuracy even in the presence of different configurations of the residual dentition or different surgical approaches. A clinical benefit is therefore present, especially from a prosthetic point of view.

Clinical relevance

The clinically achievable accuracy can be described as sufficient for further prosthetic treatment, given the intrinsic and methodological tolerances, making prosthetic rehabilitation safe and predictable.

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Funding

The authors declare that no conflict of interest exists as per the guidelines of the International Committee of Medical Journal Editors. There was no funding for this study. Within the framework of another prospective study, Camlog and Swissmeda provided materials. The first-named author has held presentations for Camlog and Swissmeda.

Author information

Authors and Affiliations

  1. Department of Prosthetic Dentistry, Center of Dentistry, University of Ulm, Ulm, Germany

    Sigmar Schnutenhaus, Heike Rudolph & Ralph G. Luthardt

  2. Hilzingen, Germany

    Sigmar Schnutenhaus & Cornelia Edelmann

  3. Institute of Epidemiology and Medical Biometry, University of Ulm, Ulm, Germany

    Jens Dreyhaupt

Authors
  1. Sigmar Schnutenhaus
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  2. Cornelia Edelmann
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  3. Heike Rudolph
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  4. Jens Dreyhaupt
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  5. Ralph G. Luthardt
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Corresponding author

Correspondence to Sigmar Schnutenhaus.

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Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.

The study was approved by the Ethics Committee of the University of Ulm (decision no. 339/14 dated April 12, 2014).

Informed consent

For this type of study, formal consent is not required.

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Schnutenhaus, S., Edelmann, C., Rudolph, H. et al. 3D accuracy of implant positions in template-guided implant placement as a function of the remaining teeth and the surgical procedure: a retrospective study. Clin Oral Invest 22, 2363–2372 (2018). https://doi.org/10.1007/s00784-018-2339-8

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  • DOI: https://doi.org/10.1007/s00784-018-2339-8

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