Oral Biofilm And Dental Calculus Flashcards
(50 cards)
The colonization of the oral cavity starts———-
Close to the time of birth
Within hours after birth, the sterile oral cavity is colonized by low numbers of mainly———–bacteria
FACULTATIVE AEROBIC
From the second day, ——— can be detected in the infant’s edentulous mouth.
anaerobic bacteria
————– AND ———– have been identified as the first and most dominant oral microbes to colonize the oral cavity of newborn infants
Streptococcus salivarius and Streptococcus mitis
Veillonella spp., Neisseria spp., Actinomyces spp. , Staphylococcus spp. are also among
1ST COLONIZERS OF ORAL CAVITY
Streptococcus sanguinis ,
Lactobacillus spp.
Streptococcus oralis.
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The species that colonize the teeth after eruption include
S. oralis, Streptococcus anginosus, mutans streptococci (Streptococcus mutans and Streptococcus sobrinus), and Streptococcus gordonii.
What are some common oral streptococci found after the first year of life?
They are anaerobic bacteria found in the oral cavity.
Fusobacterium and Prevotella
At what stage of life are oral streptococci commonly reported to be present?
After 1st year of life
T/F
At time of birth:Faculative and aerobic bacteria
second day anaerobic found streptococcus salivarious and mitis
after tooth eruption, ,sanguinis lactobaciilius,oralis,anaerobic fucubactreuim and prevotella
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Once a tooth erupts, various materials gather on its
surfaces, these substances are frequently called tooth –
accumulated materials/deposits.
They are classified as:
Soft deposits:
=Acquired pellicle
=Microbial plaque
=Materia alba
=Food debris
Hard deposits:
=Calculus
=Stains
Define Aquired Pellicle
Following tooth eruption a thin, saliva- derived layer, called the acquired pellicle, covers the tooth surface.
Define DENTAL PLAQUE?
Dental Plaque is defined as a yellowish gray structural entity resulting from sequential colonization and growth of micro organisms on the surfaces of teeth and restoration consisting of micro organisms of various strains and species are embedded in the extra cellular matrix, composed of bacterial metabolic products and substance from serum, saliva and blood
Define MATERIA ALBA?
Materia alba are soft accumulations of tissue cells and bacteria that lack the organized structure of plaque and looks like curd or cheese
A hard substance that forms on the tooth surface due to the mineralization of plaque.
Calculus
What is Materia Alba composed of?
Bacteria,Salivary proteins,Tooth debris,Epithelial cells
What is Plaque composed of?
Glycoproteins, lipids, polysaccharides, bacteria, and nonbacterial microorganisms like yeast, viruses, and minerals.
How does Materia Alba compare to Plaque and Calculus in structure?
It is not as complex and well-organized as Plaque and Calculus.
How complex is Plaque?
A: It is a complex and well-organized structure.
Q: How complex is Calculus?
A: It is a very complex and well-organized structure
Q: How can Materia Alba be removed?
A: It can be removed through water spray.
Q: How can Plaque be removed?
A: It cannot be removed through water spray; proper tooth brushing is required
Q: How can Calculus be removed?
A: It cannot be removed through water sprays or regular tooth brushing; professional cleaning (Tooth Scaling and Root Planing) is required
T/F Dental Calculus consists of mineralized bacterial plaque that forms on the surfaces of natural teeth and dental prosthesis.n the
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