Bacterial leakage along the implant–abutment interface of premachined or cast components

Abstract In recent clinical studies, contamination of the inner parts of dental implants through bacterial penetration along the implant components has been observed. The aim of the present in-vitro study was to investigate leakage of Fusobacterium nucleatum through the interface between implants an...

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Bibliographic Details
Published in:International journal of oral and maxillofacial surgery 2008-02, Vol.37 (2), p.177-180
Main Authors: do Nascimento, C, Barbosa, R.E.S, Issa, J.P.M, Watanabe, E, Ito, I.Y, Albuquerque, R.F
Format: Article
Language:English
Subjects:
Anaerobiosis
bacterial colonization
bacterial leakage
Biological and medical sciences
Chromium Alloys - chemistry
Culture Media
Dental Abutments - microbiology
Dental Alloys - chemistry
Dental Casting Technique
Dental Implants - microbiology
Dental Leakage - microbiology
Dental Prosthesis Design
Dentistry
Fusobacterium nucleatum - growth & development
Humans
implant–abutment interface
marginal fit
Materials Testing
Medical sciences
microbiology/pathogenesis
Otorhinolaryngology. Stomatology
Surface Properties
Surgery
Time Factors
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Summary:Abstract In recent clinical studies, contamination of the inner parts of dental implants through bacterial penetration along the implant components has been observed. The aim of the present in-vitro study was to investigate leakage of Fusobacterium nucleatum through the interface between implants and premachined or cast abutments. Both premachined ( n = 10) and cast ( n = 10) implant–abutment assemblies were inoculated with 3.0 μL of microbial inoculum. The assemblies were completely immersed in 5.0 mL of tryptic soy broth culture medium to observe leakage at the implant–abutment interface after 14 days of anaerobic incubation. Bacterial growth in the medium, indicative of microbial leakage, was found only in 1 out of 9 samples (11.1%) in each group. Both premachined and cast abutments connected to external hexagonal implants provide low percentages of bacterial leakage through the interface in in vitro unloaded conditions if the manufacturer's instructions and casting procedures are properly followed.
ISSN:0901-5027
1399-0020
DOI:10.1016/j.ijom.2007.07.026