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Oral microbiota and implant type membranes
S L Molgatini1, M I González, A C Rosa
1Microbiology Department, School of Dentistry, University of Buenos Aires, Argentina.
The Journal of Oral Implantology
|October 6, 1998
Summary
Biodegradable membranes show varying microbial adhesion. Candida albicans (Ca) and Staphylococcus aureus (Sa) demonstrated the highest adhesion, while Actinomyces species showed poor recovery, indicating potential for targeted applications.
Area of Science:
- Microbiology
- Biomaterials Science
Background:
- Biodegradable membranes are used in various medical applications.
- Understanding microbial adhesion to these membranes is crucial for preventing infections and ensuring device efficacy.
Purpose of the Study:
- To evaluate the adhesion of different microorganisms to biodegradable membranes.
- To compare the adhesion of various bacterial and fungal species under different conditions.
Main Methods:
- Microorganisms including Candida albicans (Ca), Staphylococcus aureus (Sa), and Streptococcus sanguis (Ss) were incubated with biodegradable membranes.
- Membranes were pretreated with saliva or chlorhexidine, or left untreated.
- Adhesion was quantified using colony-forming unit counts and visualized with scanning electron microscopy.
Main Results:
- Highest adhesion was observed for Candida albicans (Ca), Candida glabrata (Cg), Candida krusei (Ck), Staphylococcus aureus (Sa), and Streptococcus sanguis (Ss).
- Actinomyces species showed significantly lower recovery, and Porphyromonas species exhibited poor adhesion.
- Scanning electron microscopy revealed a cavelike surface structure on the membranes, with Streptococcus sanguis displaying extracellular projections.
Conclusions:
- Biodegradable membranes exhibit differential microbial adhesion, with Gram-positive bacteria and certain Candida species adhering strongly.
- The findings suggest potential for using these membranes in applications where selective microbial colonization is desired or needs to be prevented.