What bacteria is in Supragingival plaque?
Conclusions: 1) In adult patients with periodontal disease, Gram-positive anaerobes, including Peptostreptococcus, were the predominant bacteria in the subgingival plaque. 2) While in the supragingival plaque, Gram-positive aerobic cocci (Streptococcus and Staphylococcus) were predominant.
What is plaque Slideshare?
DEFINITIONS DENTAL PLAQUE “is a specific but highly variable structural entity, resulting from sequential colonization of microorganisms on tooth surfaces, restorations & other parts of oral cavity, composed of salivary components like mucin, desquamated epithelial cells, debris & microorganisms, all embedded in …
What are the stages of plaque formation?
Distinct stages in plaque formation include: acquired pellicle formation; reversible adhesion involving weak long-range physico-chemical interactions between the cell surface and the pellicle, which can lead to stronger adhesin-receptor mediated attachment; co-adhesion resulting in attachment of secondary colonizers to …
What type of plaque thrives Supragingival?
When plaque is found above the gums, it is called supragingival plaque. This type of plaque is the first type to form, about 4 to 12 hours after brushing. It is also made up of aerobic bacteria that require oxygen to survive. The other type of dental plaque that occurs below the gums is known as subgingival plaque.
What is Supragingival?
Supra-gingival, minimally invasive dentistry is a modality or style of dentistry which uses the latest materials and innovative techniques to very intentionally keep restorations (fillings, crowns, veneers, onlays, etc.) above the gum line, and which uses the most minimally-invasive techniques available.
What is plaque microbiology?
plaque, in microbiology, a clear area on an otherwise opaque field of bacteria that indicates the inhibition or dissolution of the bacterial cells by some agent, either a virus or an antibiotic. It is a sensitive laboratory indicator of the presence of some anti-bacterial factor.
What is plaque control?
” Plaque control means the regular removal and prevention of accumulations of the dental plaque on the teeth and adjacent gingival surfaces.”
How many different types of bacteria are in plaque?
In fact, it is estimated that around 1,000 different species of bacteria reside in plaque, making up around 70% of its dry weight. Although this sounds like a lot, bacteria is a natural part of the mouth ecosystem. As long as the amount of bacteria stays at a reasonable level, they are considered harmless.
What is Supragingival scaling?
Supragingival scaling is the removal of plaque and calculus above the gingival margin. It can be performed using hand instruments alone or a combination of hand instruments and powered scalers.
Where is Supragingival plaque formed?
Supragingival biofilm is dental plaque that forms above the gums, and is the first kind of plaque to form after the brushing of the teeth. It commonly forms in between the teeth, in the pits and grooves of the teeth and along the gums.
What is the principle of plaque assay?
During a plaque assay, a confluent monolayer of host cells is infected with a lytic virus of an unknown concentration that has been serially diluted to a countable range, typically between 5-100 virions.
What causes plaque?
Plaque forms as a result of chemical reactions that take place in your mouth. In order to create plaque, your mouth needs bacteria, carbohydrates, food particles and saliva. Carbohydrates are found in most foods—even healthy fare like fruits and vegetables.
What is a plaque microbiology?
What are the 4 bacteria commonly associated with plaque biofilm?
Bacteria coaggregate, forming the typical corn cob forms, bristle brush forms, or other forms in mature oral biofilm. Subsequent attached bacterial species include Fusobacterium nucleatum, Treponema spp, Tannerella forsythensis, P. gingivalis, Aggregatibacter actinomycetemcomitans, et al.
What is the principle behind plaque formation in the bacterial plates?
The plaque assay (Figure 2) is based on incorporation of host cells, preferentially in log-phase growth, into the medium. This creates a dense, turbid layer of bacteria able to sustain viral growth. An isolated phage can subsequently infect, replicate within, and lyse one cell.
What do plaques represent?
A plaque is an area of clearing in a confluent lawn of bacterial growth which represents the spot where a virus has landed, infected the bacteria it encountered, and lysed them. Each plaque represents a virus particle or plaque-forming unit (PFU).