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. 2019 Nov;30(11):1134-1141.
doi: 10.1111/clr.13527. Epub 2019 Sep 9.

The up-to-11-year survival and success of implants and abutment teeth under solely implant-supported and combined tooth-implant-supported double crown-retained removable dentures

Hannah Fobbe  1 , Peter Rammelsberg  1 , Justo Lorenzo Bermejo  2 , Stefanie Kappel  1
Affiliations

The up-to-11-year survival and success of implants and abutment teeth under solely implant-supported and combined tooth-implant-supported double crown-retained removable dentures

Hannah Fobbe et al. Clin Oral Implants Res. 2019 Nov.

Abstract

Objective: This retrospective analysis was designed to compare the survival and success of dental implants in solely implant-supported, double crown-retained removable dentures (DCRDs) and combined tooth-implant-supported DCRDs, due to a lack of data on the latter.

Material and methods: From 2002, patients were consecutively admitted for treatment at the Department of Prosthodontics, University of Heidelberg. Surgical and prosthodontic treatment and scheduled and unscheduled visits were recorded on standardized documentation forms. Kaplan-Meier analysis was used to estimate success (survival without major complications). Cox regression was applied to assess risk factors.

Results: From this clinical study, 139 DCRDs on 412 implants and 239 teeth met the inclusion criteria. Fifty-three dentures were implant-supported (213 implants). Eighty-six were supported by teeth and implants. The DCRDs were placed in 126 patients. After an observation period of up to 11.2 years (median: 4.2 years), total implant survival was 99.5% for tooth-implant-supported DCRDs and 93.4% for implant-supported ones. The estimated cumulative success was 97.2% (standard error/SE ± 1.2%) and 85.9% (SE ± 2.4%) at five years, respectively. Complications included implant or tooth loss, peri-implantitis, apical periodontitis and tooth fracture. In terms of abutments, results from multiple Cox regression revealed lower failure rates in tooth-implant-supported dentures (p = .04). No other risk factors were identified.

Conclusions: Within the limitations of this study, survival and success are high for both treatment options. Combining teeth and implants in one DCRD might have a positive effect on the prognosis of the implant and the survival of remaining teeth.

Keywords: dental implants; double crown-retained removable dentures; implant-supported overdenture; success; survival.

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References

REFERENCES

    1. Albrektsson, T., Zarb, G., Worthington, P., & Eriksson, A. (1986). The long-term efficacy of currently used dental implants: A review and proposed criteria of success. International Journal of Oral and Maxillofacial Implants, 1(1), 11-25.
    1. Andreiotelli, M., Att, W., & Strub, J. R. (2010). Prosthodontic complications with implant overdentures: A systematic literature review. The International Journal of Prosthodontics, 23(3), 195-203.
    1. Avila, G., Galindo-Moreno, P., Soehren, S., Misch, C. E., Morelli, T., & Wang, H. L. (2009). A novel decision-making process for tooth retention or extraction. Journal of Periodontology, 80(3), 476-491. https://doi.org/10.1902/jop.2009.080454
    1. Bryant, S. R., MacDonald-Jankowski, D., & Kim, K. (2007). Does the type of implant prosthesis affect outcomes for the completely edentulous arch? International Journal of Oral and Maxillofacial Implants, 22(Suppl), 117-139.
    1. Crum, R. J., & Rooney, G. E. Jr (1978). Alveolar bone loss in overdentures: A 5-year study. Journal of Prosthetic Dentistry, 40(6), 610-613. https://doi.org/10.1016/0022-3913(78)90054-9

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