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Related Concept Videos

Adhesion01:14

Adhesion

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Adhesion occurs when one type of molecule is attracted to a different molecule. Water exhibits adhesive properties in the presence of polar surfaces, such as glass or cellulose in plants. For instance, when water is poured into a glass, the positively charged hydrogen molecules of water are more attracted to the negatively charged oxygen molecules in the silica than to the oxygen in neighboring water molecules.
Capillary action is a result of water’s adhesive tendencies. When a narrow...
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Bacterial Signaling01:30

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Bacterial signaling can occur within bacteria (intracellular) or between bacteria (intercellular). At times, a group of bacteria behaves like a community. To achieve this, they engage in quorum sensing, the perception of higher cell density that causes changes in gene expression. Quorum sensing involves both extracellular and intracellular signaling. The signaling cascade starts with a molecule called an autoinducer (AI). Individual bacteria produce AIs that move out of the bacterial cell...
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Related Experiment Video

Updated: Apr 26, 2026

Oral Biofilm Formation on Different Materials for Dental Implants
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Bacterial adhesion efficiency on implant abutments: a comparative study.

Marina Etxeberria, Lidia López-Jiménez, Alexandra Merlos

    International Microbiology : the Official Journal of the Spanish Society for Microbiology
    |August 9, 2014
    PubMed
    Summary

    Wettability, not surface roughness, significantly impacts bacterial adhesion to dental implant abutment materials. Staphylococcus aureus showed higher initial adhesion than Escherichia coli, but differences diminished over time.

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    Area of Science:

    • Biomaterials Science
    • Microbiology
    • Dental Implantology

    Background:

    • Dental implant abutments are susceptible to bacterial colonization, potentially leading to peri-implantitis.
    • Understanding bacterial adhesion mechanisms on abutment materials is crucial for preventing implant failure.

    Purpose of the Study:

    • To quantitatively assess the adhesion of Escherichia coli and Staphylococcus aureus to six dental implant abutment materials.
    • To investigate the influence of surface topography (roughness) and wettability on bacterial attachment.
    • To correlate material properties with bacterial adhesion patterns over time.

    Main Methods:

    • Quantitative determination of bacterial attachment (E. coli ATCC 25922, S. aureus ATCC 28213) after 2 and 24 hours.
    • Topographical characterization using atomic force microscopy and interferometry.
    • Wettability assessment via contact angle measurements.

    Main Results:

    • Surface wettability strongly correlated with bacterial adhesion, while roughness and nano-roughness had minimal influence.
    • E. coli attachment varied significantly between materials after 2 hours; S. aureus showed consistently higher adhesion.
    • After 24 hours, adhesion differences between species and materials became less significant, though E. coli counts remained higher.

    Conclusions:

    • Material wettability is a key factor governing initial bacterial adhesion on dental implant abutment surfaces.
    • While S. aureus initially adheres more readily, E. coli exhibits higher final adhesion counts on most materials.
    • These findings highlight the importance of surface wettability in designing materials to mitigate bacterial colonization on dental implants.