Dental Plaque and Biofilm Characteristics

<p>Saliva (D)</p> Signup and view all the answers

<p>Dextran (D)</p> Signup and view all the answers

<p>The physical barrier created by the biofilm matrix. (C)</p> Signup and view all the answers

<p>The amount of water consumed. (C)</p> Signup and view all the answers

<p>It provides a sticky surface for bacteria to adhere to. (D)</p> Signup and view all the answers

<p>Near the gum line (gingival third). (D)</p> Signup and view all the answers

<p>These areas provide shelter and a protected environment for bacteria. (D)</p> Signup and view all the answers

<p>It is primarily composed of gram-positive bacteria. (D)</p> Signup and view all the answers

<p>Interaction of adhesins on the bacterial surface with receptors in the pellicle. (C)</p> Signup and view all the answers

<p>Prevotella intermedia (D)</p> Signup and view all the answers

<p>A shift from aerobic to anaerobic conditions. (D)</p> Signup and view all the answers

<p>Coaggregation (D)</p> Signup and view all the answers

<p>Porphyromonas gingivalis (A)</p> Signup and view all the answers

<p>To facilitate attachment to the pellicle and other bacteria. (D)</p> Signup and view all the answers

<p>Bacteria are classified into 5 clusters based on their nutritional and atmospheric requirements. (A)</p> Signup and view all the answers

<p>Gram-positive to gram-negative, cocci to rods, facultative anaerobes to obligate anaerobes (D)</p> Signup and view all the answers

<p>Prevotella intermedia (A)</p> Signup and view all the answers

<p>They are known for their ability to degrade collagen and contribute to tissue destruction. (B)</p> Signup and view all the answers

<p>Predominantly gram-positive, facultative anaerobic bacteria (D)</p> Signup and view all the answers

<p>It is often linked to aggressive forms of periodontitis. (C)</p> Signup and view all the answers

<p>P. gingivalis (B)</p> Signup and view all the answers

<p>Communication and interactions between species (B)</p> Signup and view all the answers

<p>Red Complex (A)</p> Signup and view all the answers

<p>Mutualism (D)</p> Signup and view all the answers

<p>Porphyromonas gingivalis (A)</p> Signup and view all the answers

<p>They are recognized as pathogens in both periodontal and non-periodontal infections (E)</p> Signup and view all the answers

<p>Found predominantly in the outer surface of mature plaque (D)</p> Signup and view all the answers

<p>The presence of the 'red complex' species is highly likely (C)</p> Signup and view all the answers

<p>P.intermedia (B), F.nucleatum (C)</p> Signup and view all the answers

<p>A.actinomycetemcomitans (B)</p> Signup and view all the answers

<p>Gram-positive facultative bacteria (C)</p> Signup and view all the answers

<p>Presence of <em>A.actinomycetemcomitans</em> in high percentages (D)</p> Signup and view all the answers

<p>P.intermedia (D)</p> Signup and view all the answers

<p>Specific Plaque Hypothesis (B)</p> Signup and view all the answers

<p>A.actinomycetemcomitans (D)</p> Signup and view all the answers

<p>Both <em>A</em> and <em>C</em> (A)</p> Signup and view all the answers

A community of bacteria that adheres to surfaces and is embedded in a protective matrix.

Biofilms increase bacterial resistance to antibiotics due to limited substance diffusion and altered bacterial properties.

Process where bacteria form a biofilm on teeth, noticeable after 1-2 days without hygiene.

Includes pellicle formation, initial colonization, secondary colonization, and maturation.

Oral hygiene, diet, salivary composition, and flow rate influence plaque buildup.

Dental plaque consists of microorganisms (70%) and an intercellular matrix (30%).

Glycoproteins from saliva are important components of the pellicle in dental plaque.

Plaque forms when bacteria interact with a solid surface and create a biofilm.

Bacteria can be free-floating (planktonic) or attached to surfaces as biofilms.

An ecosystem located below the gum line that houses various microbes.

Gingivitis is inflammation of the gums; periodontitis extends to supporting structures.

Concept that microbial communities shift based on oral health status.

Transition from gram-positive to gram-negative, changing types of organisms present.

Group of bacteria linked to periodontal disease: P. gingivalis, T. forsythia, T. denticola.

Groups of microbial species that influence periodontal health states.

A group of periodontal pathogens linked to bleeding on probing.

The process where two different microbial species bind together.

Microbes that join and interact with primary colonizers in plaque formation.

Bacterial communities forming below the gum line in the mouth.

When multiple species vie for the same binding sites on teeth.

Varied microbes within plaque, including gram-positive and gram-negative species.

Bacteria found at the outer surface of mature dental plaque.

A glycoprotein layer that coats all surfaces in the oral cavity, derived from saliva and other fluids.

The process where bacteria first attach to the pellicle-coated tooth surface, primarily gram-positive species.

Specific molecules on bacterial surfaces that help them attach to the dental pellicle.

Hairlike structures on bacteria that aid in adhesion to the pellicle and other bacteria.

The process by which additional microorganisms attach to those already present in the dental plaque.

The change from an early aerobic environment to a dominated anaerobic environment as plaque matures.

The study of bacteria interactions and classifications based on their nutritional and atmospheric needs.

A bacteria that uses amino acids and small peptides for energy.

Plaque found above the gum line, linked to calculus and caries.

Plaque located at the gum margins, associated with gingivitis.

A periodontal disease characterized by high anaerobic gram-negative bacteria.

An inflammation of the gums caused by bacterial imbalance.

A severe form of periodontitis primarily involving A.actinomycetemcomitans.

Gingivitis caused by certain bacteria that use steroids for growth.

The most effective method to control dental plaque biofilms.