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Periodontics I Lesson 5: Pathology of Periodontal Disease Host-Parasite Interactions

10 Questions

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Periodontics I Lesson 5: Pathology of Periodontal Disease Host-Parasite Interactions

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Questions and Answers

Which type of microbiota virulence factor is capable of digesting collagen, elastin, and components of the extracellular matrix?

Leukotoxin

Soluble enzymes

Arg-1 protease produced by Porphyromonas gingivalis (correct)

Harmful metabolic waste products

Which microbial virulence factor has a great capacity to kill Leukocytes?

Arg-1 protease produced by Porphyromonas gingivalis (correct)

Proteinases

Soluble enzymes

Lipopolysaccharides (LPS)

Which component of the host defense system acts as the first innate defense system?

Saliva and gingival crevicular fluid

Physical barriers (correct)

Phagocytes

Chemical barriers

Which cells and proteins are part of the inflammatory response and recognize proteins and microorganisms as part of the innate defense system?

Leukocytes and polymorphonuclear cells Signup and view all the answers

What do phagocytes do in the host defense system?

Attack and destroy harmful pathogens, and secrete cytokines to recruit other leukocytes Signup and view all the answers

What is the main role of the host's immune system in the gingival tissues?

To produce a defense reaction against microorganisms that protects the dentogingival junction Signup and view all the answers

What can result from an exaggerated immune reaction in the gingival tissues?

Bone destruction extending deeper into the connective tissue Signup and view all the answers

What characterizes the host response in immunocompromised patients?

Weak response inadequate to battle the dental biofilm Signup and view all the answers

What do microbial virulence factors directly do to host cells and tissues?

Injure host cells and tissues Signup and view all the answers

In periodontal disease, what do virulence factors from subgingival microbiota primarily do?

Sustain factors produced by subgingival microbiota Signup and view all the answers