Microbiologia

Question 1

Porphyromonas gingivalis and Prevotella intermedia

Answer 1

fluctuant mass on the gingiva which is indicative of a periodontal abscess.

caused by various gram-negative bacteria such as** Porphyromonas gingivalis and Prevotella intermedia**. Because these bacteria cause periodontal pathology, they are the species most likely to be present in the periodontal abscess.

Question 2

Staphylococcus aureus**

Answer 2

• gram-positive
• round bacteria
• found in the upper respiratory tract and skin.

Question 3

Streptococcus mutans

Answer 3

• facultative,
• anaerobic,
• gram-positive
• found in the oral cavity.
• associated with tooth decay than with periodontal disease.

Question 4

Streptococcus sanguinis

Answer 4

facultative
anaerobic,
gram-positive bacteria
resides in the oral cavity
associated with plaque formation.

it is eventually replaced with more gram-negative pathogens in periodontal disease