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Eleven- to fifteen-year outcome for two-piece implants with an internal tube-in-tube connection: a cross-sectional analysis of 245 implants

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Abstract

Purpose

The aim of this retrospective study was to evaluate the outcomes of a two-piece implant system with a tube-in-tube internal connection after up to 15 years of clinical use.

Material and methods

A retrospective follow-up examination of patients treated with internal tube-in-tube implants between 2003 and 2006 was conducted. The implant survival rates, peri-implant conditions (marginal bone loss, bleeding on probing, plaque index, probing depth), and technical complications were determined.

Results

In total, 312 dental implants were placed in 152 patients. Of the original 152 patients enrolled, 245 implants in 112 patients were available for a follow-up evaluation after 11 to 15 years (mean observation time, 12.9 ± 1.1 years). The overall implant survival rate was 93.9%. Outcomes for MBL (1.49 ± 1.23 mm), PI (24.3 ± 22.2%), BOP (18.3 ± 28.7%), and PD (2.74 ± 1.21 mm) were observed. Selected parameters (time after implant surgery, smoking habits, bone augmentation (GBR)) showed an influence on MBL and PD.

Conclusions

The internal tube-in-tube implant system showed favorable long-term results. The correlation of MBL and PD with the patient-specific factor smoking habit is in accordance with other studies.

Clinical relevance

Camlog Root-Line implants with a tube-in-tube implant-abutment connection and a 1.6-mm polished neck configuration have demonstrated favorable long-term outcomes in daily clinical practice. However, it is important to note that these implants are no longer available on the market.

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Data availability

The data that support the findings of this study are available from the corresponding author, (K.T), upon reasonable request.

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Acknowledgements

The authors thank DI Irene Mischak (Medical University of Graz, Austria) for statistical analysis.

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Authors and Affiliations

Authors

Contributions

Authors’ contributions: E.S &; K.T. conceived and designed the overall study, executed the experiments, analyzed the data, and wrote the manuscript. H. H., C.U.M and A.S. designed the study, executed the experiments, analyzed data and edited the manuscript. M.L. supervised the project and made final approval of manuscript. All authors read and approved the final manuscript.

Corresponding author

Correspondence to Kerstin Theisen.

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Local ethics committee at the Medical University of Graz (ref: 30–349 ex 17/18).

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Steyer, E., Theisen, K., Hulla, H. et al. Eleven- to fifteen-year outcome for two-piece implants with an internal tube-in-tube connection: a cross-sectional analysis of 245 implants. Oral Maxillofac Surg 28, 859–867 (2024). https://doi.org/10.1007/s10006-024-01215-4

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