Dental Plaque Formation and Microbiology

<p>The presence of gingival crevice provides a more sheltered environment for plaque formation. (B)</p> Signup and view all the answers

<p>It reaches a steady state, with a balance between plaque formation and removal. (D)</p> Signup and view all the answers

<p>Dental plaque (B)</p> Signup and view all the answers

<p>A soft accumulation of bacteria and tissue cells, lacking the organized structure of dental plaque. (C)</p> Signup and view all the answers

<p>To understand the link between plaque and periodontal diseases. (A)</p> Signup and view all the answers

<p>All of the above. (D)</p> Signup and view all the answers

<p>All of the above. (D)</p> Signup and view all the answers

<p>The subgingival regions adjacent to a hard surface (D)</p> Signup and view all the answers

<p>Materia alba is easily displaced, while dental plaque is firmly attached to the tooth surface. (B)</p> Signup and view all the answers

<p>Calculus is a hard deposit formed by mineralization of dental plaque. (C)</p> Signup and view all the answers

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

<p>Association with bleeding on probing (C)</p> Signup and view all the answers

<p>Their location relative to the tooth surface (B)</p> Signup and view all the answers

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

<p>They are composed of specific combinations of species. (B)</p> Signup and view all the answers

<p>Orange complex (C)</p> Signup and view all the answers

<p>It supports the idea that plaque communities are organized and interconnected. (C)</p> Signup and view all the answers

<p>They are primarily found in individuals with healthy periodontal tissue. (A)</p> Signup and view all the answers

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

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

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

<p>Gram-negative anaerobic (C)</p> Signup and view all the answers

<p>The amount of plaque accumulation (C)</p> Signup and view all the answers

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

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

<p>S. sanguis (A)</p> Signup and view all the answers

<p>From cocci to rods, then to spirochetes. (B), From facultative anaerobes to obligate anaerobes. (D)</p> Signup and view all the answers

<p>Healthy oral environments are dominated by gram-positive bacteria, while chronic periodontitis is associated with gram-negative bacteria. (A)</p> Signup and view all the answers

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

<p>They are primarily gram-positive bacteria. (A)</p> Signup and view all the answers

<p>It is associated with aggressive periodontitis. (D)</p> Signup and view all the answers

<p>Gram-positive facultative microorganisms (B), Actinomyces viscosus and Streptococcus sanguis (D)</p> Signup and view all the answers

<p>To help bacteria attach to the pellicle and other bacteria (C)</p> Signup and view all the answers

<p>It inhibits bacterial attachment. (D)</p> Signup and view all the answers

<p>Growth of gram-negative anaerobic microorganisms. (D)</p> Signup and view all the answers

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

<p>Actinomyces viscosus (B)</p> Signup and view all the answers

<p>Gram-negative bacteria only (A)</p> Signup and view all the answers

<p>Nutritional and atmospheric environments (A)</p> Signup and view all the answers

Soft deposits forming a biofilm on tooth surfaces, leading to periodontal disease.

Hard deposit formed by the mineralization of dental plaque, often covered by unmineralized plaque.

Soft, loosely organized accumulation of bacteria and tissue cells on teeth, easier to displace than plaque.

Infections causing inflammation and damage to the supporting structures of teeth, primarily stimulated by dental plaque.

Groups of bacteria that work together in causing periodontal diseases.

Key regions in the mouth where bacteria thrive, impacting periodontal health.

Hard surfaces in the mouth, like teeth and implants, where dental plaque can form.

How different bacteria influence each other during periodontal diseases.

Microorganisms associated with periodontal disease that interact with their environment.

Communities of microbes that form protective layers on surfaces, such as teeth.

A group of microorganisms associated with periodontal disease, particularly bleeding on probing.

The mechanism that allows different species of bacteria to adhere together in dental plaque.

Microbial community that develops at the gumline and contributes to periodontal health.

Bacterial species that join the initial colonizers in the dental plaque biofilm.

The outer layer of mature dental plaque, primarily made of Gram-negative bacteria.

Includes cooperation and competition among different microbial species in the oral environment.

An ecosystem below the gum line where bacteria thrive, influencing periodontal health.

Gingivitis is inflammation of gums; Periodontitis involves supporting structures loss.

Initial colonization involves primary bacteria; secondary involves more diverse organisms.

Gingivitis triggered by hormonal changes during pregnancy, often linked to Prevotella intermedia.

Bacteria that use amino acids and small peptides as energy sources.

Plaque located above the gum line, associated with calculus and caries.

Plaque found along the gum line, linked to gingivitis.

Plaque located below the gum line, associated with tissue destruction.

Theory suggesting that all plaque leads to disease due to quantity.

Condition where A.actinomycetemcomitans dominates the microbiota.

Most effective method for controlling dental plaque biofilm.

Bacteria in biofilms show increased resistance to antimicrobial agents due to diffusion barriers and altered growth rates.

Dental plaque forms on teeth within 1-2 days without oral hygiene, observable as white or grayish deposits.

Plaque accumulation is influenced by oral hygiene, diet, salivary composition, and saliva flow rate.

Plaque formation can be divided into four stages: pellicle formation, initial colonization, secondary colonization, and maturation.

Biofilms have a complex structure that limits the penetration of substances and alters bacterial properties.

A glycoprotein layer coats all oral surfaces.

Derived from saliva, crevicular fluid, and debris.

Bacteria colonize pellicle-coated surfaces within hours.

Molecules on bacteria that help attach to the pellicle.

Hairlike structures that aid bacterial connection to surfaces.

Growth and colonization leading to a mature plaque mass.

Microorganisms that join established plaque bacteria.