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Bacterial Adhesion of Actinobacillus actinomycetemcomitans Serotypes to Titanium Implants: SEM Evaluation.A Preliminary Report
Author(s) -
Ökte Emel,
Sultan Nedim,
Doğan Başak,
Asikainen Sirkka
Publication year - 1999
Publication title -
journal of periodontology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.036
H-Index - 156
eISSN - 1943-3670
pISSN - 0022-3492
DOI - 10.1902/jop.1999.70.11.1376
Subject(s) - actinobacillus , serotype , microbiology and biotechnology , adhesion , bacteria , chemistry , virulence , biology , biochemistry , organic chemistry , gene , genetics
Background: In this study, the adherence ability of Actinobacillus actinomycetemcomitans serotypes to titanium implant surfaces was evaluated to demonstrate if any selective adherence occurs according to the serotypes of the microorganism. Methods: The study material included 3 reference strains of A. actinomycetemcomitans serotypes a, b, and c (ATCC 29523, ATCC 43718, ATCC 33384) and 2 clinical isolates of A. actinomycetemcomitans serotypes and e (IDH 781, IDH 1705), together with commercially available titanium blade implants. For each strain, bacterial suspensions with identical concentrations (5 × 10 7 cells/ml) were prepared and 0.5 ml of each was added on to the implant surfaces, which had been precoated with glycine‐bovine serum albumin (BSA). After incubation at 37°C for 60 minutes in 5% CO 2 in air, the implants with attached bacteria were prepared for scanning electron microscopic (SEM) observations. Bacterial adhesion was quantified on the textured body surfaces of the implants, and results were statistically analyzed with analysis of variance followed by Duncan's test. The surface ultrastructure of the bacterial cells was also evaluated descriptively. Results: The tested strains adhered to implant surfaces in different quantities. Serotype a (ATCC 29523) showed the highest adherence affinity (statistically significant, P <0.01). When compared with each other, serotypes b, c, and d (ATCC 43718, ATCC 33384, and IDH 781) attached equally well, whereas serotype (IDH 1705) had a statistically significant low adherence capability. Conclusions: It is suggested that in vitro A. actinomycetemcomitans adhesion to implant surfaces is strain dependent. J Periodontol 1999;70:1376‐1382