Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Observational Study
. 2020 Mar 19;56(3):139.
doi: 10.3390/medicina56030139.

Maxillary Implant-Supported Overdentures: Mechanical Behavior Comparing Individual Axial and Bar Retention Systems. A Cohort Study of Edentulous Patients

José Félix Mañes Ferrer  1 , Lucía Fernández-Estevan  1 , Eduardo Selva-Otaolaurruchi  1 , Carlos Labaig-Rueda  1 , María Fernanda Solá-Ruíz  1 , Rubén Agustín-Panadero  1
Affiliations
Observational Study

Maxillary Implant-Supported Overdentures: Mechanical Behavior Comparing Individual Axial and Bar Retention Systems. A Cohort Study of Edentulous Patients

José Félix Mañes Ferrer et al. Medicina (Kaunas). .

Abstract

Background and objectives: To compare the medium- to long-term mechanical behavior of overdentures with two different retention systems: overdentures with Locator® axial retention, and vertical insertion overdentures with bar retention, used to rehabilitate edentulous maxillar. Material and Methods: This prospective study assessed patients presenting complete maxillary edentulism, rehabilitated by means of implant-supported overdentures (n = 20), 10 with Locator® axial retention (ODA group) and 10 with overdentures on bars (ODB group). Patients also completed a questionnaire to determine their satisfaction with treatment. Results: The mean follow-up time in both groups was 11.4 years, with follow-up times in both groups ranging from 5 to 14 years. The ODA group suffered mechanical complications such as retention loss, need for nylon retention insert changes, resin fracture, and need for relining. In the ODB group, prosthetic dental wear, screw loosening, and complete prosthetic failure were more common. A total of 19 implants failed (23.8%); of these, 11 were in the ODA group (failure rate = 27.5%) and eight in the ODB group (failure rate = 20%). The patient satisfaction questionnaire obtained a mean score of 7.9 out of 10 in the ODA group, and 9.75 in the ODB group. Conclusions: in rehabilitations of edentulous maxillar by means of implant-supported overdentures, both the systems assessed were shown to be effective in the medium to long term. Patients expressed a high level of satisfaction with the treatments received.

Keywords: bar; clinical outcomes; dental implants; locator; overdenture.

PubMed Disclaimer

Conflict of interest statement

The authors declare no conflicts of interest

Figures

Figure 1
Figure 1
Examples of overdentures: (A) Locator® axial attachments (ODA group), and (B) bars attachments (overdentures on bars (ODB) group).
Figure 2
Figure 2
Complication rates according to type of overdenture retention. Vertical insertion overdenture with axial retention (Locator®) (ODA group) and vertical insertion overdenture with bar retention (ODB group).
Figure 3
Figure 3
Overall prosthetic survival according to retention type.
Figure 4
Figure 4
Need for relining according to type of overdenture retention.
Figure 5
Figure 5
Prosthetic dental fractures according to overdenture retention type.
Figure 6
Figure 6
Occurrence of resin fractures according to overdenture retention type.
Figure 7
Figure 7
Retention screw loosening/loss according to type of overdenture retention.
Figure 8
Figure 8
Dental wear according to type of overdenture retention.
Figure 9
Figure 9
Results of patient satisfaction survey according to overdenture retention type (average values with standard deviation (d.e.).
See this image and copyright information in PMC

References

    1. Pujol Rodríguez R., Abellán García A., Pérez Díaz J., Ayala García A. Un Perfil de Las Personas Mayores En España, 2018. Indicadores Estadísticos Básicos. 2018;13:34.
    1. 2019 World Population Data Sheet—Population Reference Bureau. [(accessed on 16 November 2019)]; Available online: https://www.prb.org/worldpopdata/
    1. Isla Pera P. El Envejecimiento de La Población. Rev. Enferm. 2003;26:15–20. - PubMed
    1. Gerritsen A.E., Allen P.F., Witter D.J., Bronkhorst E.M., Creugers N.H.J. Tooth Loss and Oral Health-Related Quality of Life: A Systematic Review and Meta-Analysis. Health Qual. Life Outcomes. 2010;8:126. doi: 10.1186/1477-7525-8-126. - DOI - PMC - PubMed
    1. Driscoll C.F., Freilich M.A., Guckes A.D., Knoernschild K.L., Mcgarry T.J. The Glossary of Prosthodontic Terms: Ninth Edition. J. Prosthet. Dent. 2017;117:e1–e105. - PubMed

Publication types

MeSH terms

Substances

LinkOut - more resources