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
. 2020 Nov 3:2020:7929585.
doi: 10.1155/2020/7929585. eCollection 2020.

Retrospective Clinical Study of a Freely Removable Implant-Supported Fixed Dental Prosthesis by a Microlocking System

Eun-Bin Bae  1 , Won-Tak Cho  1 , Hyun-Young Bae  1 , So-Hyoun Lee  1 , Tae-Hyung Kim  2 , Jung-Bo Huh  1
Affiliations

Retrospective Clinical Study of a Freely Removable Implant-Supported Fixed Dental Prosthesis by a Microlocking System

Eun-Bin Bae et al. Biomed Res Int. .

Abstract

This retrospective clinical study was conducted to evaluate the clinical usefulness of a freely removable microlocking implant prosthesis (MLP) that was developed to overcome the problems with conventional implant prostheses. A total of 54 patients (male: 31, female: 23) and 100 implant prostheses were included. Patients were divided into three groups such as 6-12 months, 12-18 months, and 18-24 months according to the used period after implant prosthesis delivery, and the patients in each group were recalled for examinations of survival rate, marginal bone resorption, peri-implant soft tissue indices, and complications. The prosthetic complications were analysed by combining the recorded chart data during the periodic checks including the last call for this study. During a 2-year observation period, all the implants showed a 100% survival rate without clinical mobility and functional problems. There was no significant difference in marginal bone resorption, plaque index, and bleeding index over the observation period after implant prosthesis delivery. Probing depth of the 18-24 months group (1.5 ± 0.19 mm) was significantly lower than that of the 6-12 months group (p < 0.05). The main complication was abutment loosening (4%), followed by implant prosthesis fracture (2%) and food impaction (2%) which were recorded. Within the limits of the present study, the implant prostheses with MLP are considered to be an applicable and predictable treatment method.

PubMed Disclaimer

Conflict of interest statement

The authors declare that there is no conflict of interest, either directly or indirectly, regarding the publication of this paper.

Figures

Figure 1
Figure 1
Detailed illustration of the abutment and cap making up the MLP: (a) body, (b) ball, (c) spring, (d) cap, and (e) retention groove of the abutment.
Figure 2
Figure 2
Prosthesis setting process of MLP: (a) properly selected abutments were connected to the fixtures; (b) caps were attached on the abutments; (c) fabricated zirconia crowns were cemented on the caps with resin cement.
Figure 3
Figure 3
References used to measure actual marginal bone loss: (a) marginal bone level (distance from the implant platform to the top of the marginal bone) and (b) distance of the implant.
See this image and copyright information in PMC

References

    1. Albrektsson T., Dahl E., Enbom L., et al. Osseointegrated oral implants. Journal of Periodontology. 1988;59(5):287–296. doi: 10.1902/jop.1988.59.5.287. - DOI - PubMed
    1. Becker W., Becker B. E., Alsuwyed A., Al-Mubarak S. Long-term evaluation of 282 implants in maxillary and mandibular molar positions: a prospective study. Journal of Periodontology. 1999;70(8):896–901. doi: 10.1902/jop.1999.70.8.896. - DOI - PubMed
    1. Bahat O. Brånemark system implants in the posterior maxilla: clinical study of 660 implants followed for 5 to 12 years. The International Journal of Oral & Maxillofacial Implants. 2000;15(5):646–653. - PubMed
    1. Kim S. K., Kim J. H., Lee K. W., Cho K. S., Han D. H. Success rate and marginal bone loss of Osstem USII plus implants; short term clinical study. The Journal Korean Academy of Prosthodontics. 2011;49(3):206–213. doi: 10.4047/jkap.2011.49.3.206. - DOI
    1. Levine R. A., Clem D., Beagle J., Ganeles J., Johnson P., Solnit G. Multicenter retrospective analysis of the solid-screw ITI implant for posterior single-tooth replacements. The International Journal of Oral & Maxillofacial Implants. 2002;17(4):550–556. - PubMed

Substances

LinkOut - more resources