plaque 3 inter bacterial substances Flashcards
what are the inter-bacterial substances of plaque biofilm? (8)
Proteins
Carbohydrates
Dietary additives (sugar)
Desquamated epithelial cells
Leukocytes
Bacterial products such as -
Enzymes
Endotoxins
Acids
what is a protein?
bulk of interbacterial substances made up of glycoproteins.
(protein with a sugar attached) from saliva/crevicular fluid (immunity)
what do glycoproteins do?
involved in nearly every cell process for cell interaction.
what is an extracellular polysaccharide?
a carbohydrate composed of sugar.
what are the 3 extracellular polysaccharides?
Dextrans
Levans
Fructans
Extracellular polysaccharides are - sticky to?
increase the bulk of the plaque, encourage other bacteria to adhere to plaque
dietary additives in plaque biofilm?
No actual food particles in plaq
Dissolved substances only - sugar
Significant in relation to caries
what are the 3 cells present in plaque?
erythrocytes
leukocytes
desquamated epithelial cells
Bacterial products Gram – ve & + VE Bacteria in plaque?
Endotoxins
Endotoxins from Gram -ve bacteria
Gram +ve bacteria what does it release?
mucopeptides
Collagenase what does it do?
destroys collagen tissue
Hyaluronidase what does it do?
causesulceration of epithelium breaks down hylaronic acid
Beta ( ) glucuronidase what does it destroy
destroys ground substance in vitro
Chondroitin sulphatase what does it destroy
destroys ground substance in vitro
Neuraminidase what does it increase
bulk of plaque
