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 Dec 8:17:32.
doi: 10.18502/fid.v17i32.5196. eCollection 2020.

In Vitro Bacterial Leakage at the Implant-Abutment Connection of Two Dental Implant Systems with Internal Connection

Azadeh Khajavi  1 , Shabnam Mohseni  2 , Amir Peymani  3 , Mehrak Amjadi  4
Affiliations

In Vitro Bacterial Leakage at the Implant-Abutment Connection of Two Dental Implant Systems with Internal Connection

Azadeh Khajavi et al. Front Dent. .

Abstract

Objectives: Bacterial leakage at the implant-abutment interface is one of the main causes of peri-implant inflammation. One of the factors that influences bacterial leakage is the structural design of the interface. Considering the limited studies that have examined slip-joint connections, a comparative study of bacterial leakage was performed on two different systems namely Zimmer (Tapered Screw-Vent, Zimmer Dental) with slip-joint connection and Argon (Konus K3pro, Argon Implants) with conical connection.

Materials and methods: Twenty-two implants were selected in 2 groups (11 Zimmer with slip-joint connection, and 11 Argon with conical connection) with similar platforms. Escherichia coli (E. coli) suspension (2 μL) was pipetted into the internal lumen of implants. The abutments were screwed onto the implants with a closing torque of 30 Ncm. The assemblies were placed in culture broth for 6, 24, 48 and 72 h, and 7 and 14 days. The colonies were counted and analyzed by the Mann-Whitney test (a=0.05).

Results: Microleakage was observed in 20% of the samples of conical connection group after 6 h to 2 days, and in 50% of the samples in slip-joint connection group after 3 to 7 days. There was a significant difference in bacterial leakage rate between the two implant groups (P<0.001) but no significant difference was seen in bacterial leakage over time (P>0.05).

Conclusion: Type of connection had a significant effect on bacterial leakage, but the rate of bacterial leakage did not significantly change over time.

Keywords: Bacterial Load; Dental Implant-Abutment Design; Dental Implants; Dental Leakage.

PubMed Disclaimer

Conflict of interest statement

CONFLICT OF INTEREST STATEMENT None declared.

Figures

Fig. 1.
Fig. 1.
Conical connection in Argon implant
Fig. 2.
Fig. 2.
Slip joint connection in Zimmer implant
Fig. 3.
Fig. 3.
Implant-abutment assembly in tryptic soy broth medium
Fig. 4.
Fig. 4.
Cultivation in MacConkey agar medium
See this image and copyright information in PMC

References

    1. Diez JS, Brigagão VC, Cunha L, Neves AC, da Silva-Concilio LR. Influence of diamondlike carbon-coated screws on the implant-abutment interface. Int J Oral Maxillofac Implants. 2012. Oct;27(5):1055–60. - PubMed
    1. Goodacre CJ, Bernal G, Rungcharassaeng K, Kan JY. Clinical complications with implants and implant prostheses. J Prosthet Dent 2003. Aug;90(2):121–32. - PubMed
    1. Hecker DM, Eckert SE. Cyclic loading of implant-supported prostheses: changes in component fit over time. J Prosthet Dent. 2003. Apr;89(4):346–51. - PubMed
    1. Cibirka RM, Nelson SK, Lang BR, Rueggeberg FA. Examination of the implant-abutment interface after fatigue testing. J Prosthet Dent. 2001. Mar;85(3):268–75. - PubMed
    1. Gratton DG, Aquilino SA, Stanford CM. Micromotion and dynamic fatigue properties of the dental implant-abutment interface. J Prosthet Dent. 2001. Jan;85(1):47–52. - PubMed

LinkOut - more resources