Exam 1 Need to Review Flashcards
Saccharolytic
These are bacteria that metabolize sugars for energy
Lows the PH
Asaccharolytic
These bacteria use amaino acids for energy
Along the gums and raises the PH
Lipopolysaccharides
A component of the outer cell membrane in gram - bacteria that activate host inflammation repsonses
What is peptidoglycan composed of
N-acetylmuramic acid
N- acetylglucosamine
Purpose of Peptidoglycan
Network that is in the cell walls. Thick in gram + and thin in Gram -
How thick is the peptidoglycan layer in Gram +
up to 30 layers
Biofilm
community of mircro-organisms that are anchored to a surface (tooth or dock)
Proteome
like a genenome of proteins
Caries
tooth decay or cavities formed by specific types of bacteria in the enamel and dentin
Where do biofilms form
Biofilms develop in any fluid filled environment containing microorganisms that are subjected to stress or fluid flow.
What are the stages of Oral Biofilm development
Stage 1 (Lag) Foundation is set by gram positive bacteria like streptococci. Stage 2 (Log)- recruitment of bio diverse bacteria, corss-linking forms network of bacteria. Stage 3 (Stationary) predominantly gram negative Stage 4 (Death) stough off.
Plaque
This is the soft bio film that build up on the tooth surface due to the attachment of bacteria.
Calculus
The hardened version of plaque that occurs as a result of deposition of mineral like calcium into the plaque. (CALCIFIED)
Pellicle
The thin layer or protein that forms on the layer of the tooth. This occurs through the binding of glycoprotiens that are present in saliva.
Glucans
polysaccharide that is made from glucose monomers. These monomers are first broken down from sucrose and then built into glucans.