Dental Biofilm and other Soft Deposits Flashcards
Tenacious membranous layer that is amorphous, acellular, and organic?
Acquired Pellicle
Name 3 types f Pellicle
- Surface Pellicle, Unstained
- Surface Pellicle, Stained
- Subsurface Pellicle
Which Pellicle is clear, translucent, insoluble, and not visible until disclosed?
Surface Pellicle, Unstained
Which Pellicle can have extrinsic stain and be brown, grayish, or other colors?
Surface Pellicle, Stained
Which Pellicle is embedded in tooth structure, particularly where tooth is demineralized?
Subsurface Pellcile
Pellicle thickness varies from _____ microns, and greatest near where?.
0.1-0.8 and gingival margin
Name the significance of Pellicle
A. Protective-provides barrier against acids.
B. Lubrication-keeps surfaces moist.
C. Nidus of Bacteria-biofilm aids in adherence of microorganisms
D. Attachment of Calculus
What is a dense, nonmineralized complex mass of colonies in a gel-like intermicrobial matrix that adheres directly to the acquired pellicle?
Dental Biofilm
Gingivitis develops in how many weeks if biofilm is left on?
1-3 weeks
Name some detections of Biofilm?
A. Direct Vision (is it thin, stained, or thick)
B. Use of explorer.
C. Use of disclosing agent.
D. Clinical Record.
Name some factors that influencing Biofilm Accumulation?
- Crowded Teeth.
- Rough Surfaces.
- Difficult to Clean.
- Out of Occlusion.
- Bacterial Multiplication(thickness of biofilm
Acquired Pellicle is composed of what? and absorbed by what?
glycoproteins from saliva
hydroxyapetite of tooth structure
Acquired Pellicle is formed when?
Within minutes after material has been removed from tooth, pellicle begins to form.
In what day(s) can inflammation be observed in the gingival tissues?
7-14
In what day(s) is gingivitis evident clinically?
14-21
Dental biofilm consists of what type of inorganic elements?
Calcium and Phosphorus
fluoride
Dental biofilm consists of what type of organic elements?
Carbohydrates
Proteins
There are over how many distinct bacterial species found in the oral cavity?
700
Composition of Dental Biofilm consists of what percentage organic/inorganic solids?
And consist of what percentage of water?
20%
80%
What is the most universal daily mechanical disruption method used for removal of Biofilm?
Manual or power toothbrushing
Not made up of or containing cells? (Term)
Acellular
The pellicle can be fully formed within how many minutes?
30-90 minutes
Pellicle can be removed how?
by air polishing/rubber cup/brushing/flossing
The forceful wedging of food into the periodontium by occlusal forces? (Term)
Food impaction
White blood corpuscle capable of amoeboid movement; functions to protect the body against infection and disease? (Term)
Leukocyte
T/F **Perio disease and dental caries are infectious transmissible diseases caused by pathogenic microorganisms found in microbial biofilm (KNOW)
True
Adjective applied to dental biofilm that is conducive to the formation or calculus?
Calculogenic
Adjective to indicate a conduciveness to the initiation of dental caries, such as a cariogenic biofilm or a cariogenic foods? (Term)
Cariogenic
Attachment of one substance to the surface of the surface another; the action of a substance in attracting and holding other materials or particles on its surface? (Term)
Adsorption
Heterotrophic microorganism that can live and grow in the presence of free oxygen; some are obligate, others facultative (Term)
Aerobe
Heterotrophic microorganism that lives and grows in complete or almost complete absence of oxygen? (Term)
Anaerobe
Dynamic, complex, multispecies communities of microorganisms that colonize the oral cavity. Unique characteristics allow biofilms to adapt to a variety of every changing environments; characteristics include: tenacious adherence to surfaces, protective EPS, three-dimensional structures with complex nutrient and communication pathways? (Term)
Biofilm
White or cream-colored “cheesy” mass that can collect over dental biofilm on unclean, neglected teeth; it is composed of food debris, mucin, bacteria sloughed epithelial cells? (Term)
Material Alba
Is a dense, nonmineralized complex mass of colonies in a gel-like intermicrobial matrix. It adheres directly to the acquired pellicle?
Dental Biofilm (Plaque)
Biofilm forms in how many days?
Usually 1-3
During biofilm formation, where does it usually begin?
Gingival margin particularly proximal surfaces
How do yo detect biofilm?
Direct vision
Use of explorer
Disclosing agent
Clinical record
Is a disease of dental calcified structures that is demineralized by mineral components and dissolution of organic matrix?
Dental caries
In a healthy sulcus ______bacteria is present. And in a diseased pocket _______bacteria is present
Aerobic
Anaerobic
