High Yield Bacteria INBDE Exam
2025 Questions and Answers
Which bacteria is known to contribute to the initiation and progression of caries
(especially root caries) as well as periapical lesions? - ANSWER✔✔-Actinomyces sp
Which bacteria is one of the predominant bacteria in dental plaque and is the primary
pathogen of caries (acidogenic)? - ANSWER✔✔-Streptococcus mutans
Aggregatibacter actinomycetemcomitans is associated with what form of periodontitis?
- ANSWER✔✔-Aggressive perio
Aggregatibacter actinomycetemcomitans is part of the _____ complex (color) -
ANSWER✔✔-Green
Fusobacterium sp are part of the _____ complex (color) - ANSWER✔✔-Orange
Which bacteria species may act as a bridge between early and late colonizing bacteria in
plaque and can be found in periapical lesions? - ANSWER✔✔-Fusobacterium sp
Porphyromonas gingivalis is associated with what form of periodontitis? -
ANSWER✔✔-Chronic
, Subgingival calculus is associated with which type of bacteria? - ANSWER✔✔-
Porphyromonas gingivalis
Porphyromonas gingivalis is part of the _____ complex (color) - ANSWER✔✔-Red
Which bacteria inhabits subgingival areas and is responsible for the initiation of
connective tissue/alveolar bone destruction in periodontal disease? - ANSWER✔✔-
Tannerella forsythia
Tannerella forsythia is part of the ____ complex (color) - ANSWER✔✔-Red
Which bacteria is associated with incidence and severity of periodontal disease? -
ANSWER✔✔-Treponema denticola
Treponema denticola is part of the _____ complex (color) - ANSWER✔✔-Red
Which bacteria is a normal colonizer of skin but can be associated with aggressive and
severe infective endocarditis if able to enter the bloodstream? - ANSWER✔✔-
Staphylococcus aureus
Streptococcus sanguinis is part of the _____ complex (color) - ANSWER✔✔-Yellow
Which bacteria is typically associated with healthy plaque biofilm but can cause
infective endocarditis if able to enter the bloodstream? - ANSWER✔✔-Streptococcus
sanguinis
2025 Questions and Answers
Which bacteria is known to contribute to the initiation and progression of caries
(especially root caries) as well as periapical lesions? - ANSWER✔✔-Actinomyces sp
Which bacteria is one of the predominant bacteria in dental plaque and is the primary
pathogen of caries (acidogenic)? - ANSWER✔✔-Streptococcus mutans
Aggregatibacter actinomycetemcomitans is associated with what form of periodontitis?
- ANSWER✔✔-Aggressive perio
Aggregatibacter actinomycetemcomitans is part of the _____ complex (color) -
ANSWER✔✔-Green
Fusobacterium sp are part of the _____ complex (color) - ANSWER✔✔-Orange
Which bacteria species may act as a bridge between early and late colonizing bacteria in
plaque and can be found in periapical lesions? - ANSWER✔✔-Fusobacterium sp
Porphyromonas gingivalis is associated with what form of periodontitis? -
ANSWER✔✔-Chronic
, Subgingival calculus is associated with which type of bacteria? - ANSWER✔✔-
Porphyromonas gingivalis
Porphyromonas gingivalis is part of the _____ complex (color) - ANSWER✔✔-Red
Which bacteria inhabits subgingival areas and is responsible for the initiation of
connective tissue/alveolar bone destruction in periodontal disease? - ANSWER✔✔-
Tannerella forsythia
Tannerella forsythia is part of the ____ complex (color) - ANSWER✔✔-Red
Which bacteria is associated with incidence and severity of periodontal disease? -
ANSWER✔✔-Treponema denticola
Treponema denticola is part of the _____ complex (color) - ANSWER✔✔-Red
Which bacteria is a normal colonizer of skin but can be associated with aggressive and
severe infective endocarditis if able to enter the bloodstream? - ANSWER✔✔-
Staphylococcus aureus
Streptococcus sanguinis is part of the _____ complex (color) - ANSWER✔✔-Yellow
Which bacteria is typically associated with healthy plaque biofilm but can cause
infective endocarditis if able to enter the bloodstream? - ANSWER✔✔-Streptococcus
sanguinis
