Oral Microbiome and Biofilms (3) Flashcards
What is the group of streptococci which is most involved in dental caries?
Groups Mutans
S. mutans
What group of streptococci favours keratinised surfaces?
Group Sallvarius
S. sallvarius
What group of streptococci favours dental plaque?
Also, name the species
Oralis
species … S. gordonii
What group of streptococci is an early coloniser and produces glucans?
S. oralis
What group of streptococci colonises teeth?
S. sanguis
What group of streptococci favours non-keratinised surfaces?
S. mitis
Describe the Streptococci group Oralis
Early colonisers of pellicle. Some produce IgA proteases.
usually commensal
All may act as opportunistic bacteria
What group of streptococci are important in purulent infections?
Anginosis
Where do S. anginosus cause abscesses?
dental and distant site abscesses
What is a purulent infection?
abscess
usually caused by S. anginosus
What are haemolytic bacteria?
Some bacteria produce hemolysins that damage the membrane of red blood cells.
What diseases do S. pyogenes cause?
causes infections such as strep throat and impetigo.
Is the symbiosis in the oral cavity symbiotic or dysbiotic?
it is dynamic
can shift from symbiosis to dysbiosis
What factors can influence the symbiosis in the oral microbiome?
- disease e.g. diabetes
- genetic differences
- activity of salivary proteins
- salivary flow rates
- innate/ adaptive immune factors
- oral hygiene
- diet
- smoking
- antibiotics/antimicrobial agents
How would you describe the shift from health to disease?
complex and multi-factorial