dental plaque

1. What is dental plaque primarily composed of?

• food particles and water

• bacteria,saliva and food debris

• saliva

• fluoride and calcium

Which of the following bacteria are considered primary colonizers in dental plaque formation?

• Porphyromonas gingivalis
  
  
  

• B) Streptococcus and Actinomyces species

• C) Treponema denticola

• D) Fusobacterium nucleatum

Which hypothesis suggests that only specific bacteria in plaque are responsible for periodontal disease?

• non specific plaque hypothesis

• specific plaque hypothesis

• ecological plaque hypothesis

• genetic plaque hypothesis

4. According to the Ecological Plaque Hypothesis, what triggers the shift from a healthy to a pathogenic biofilm?

• A) Genetic mutations in oral bacteria
  

• B) Changes in environmental conditions like pH and nutrients
  

• The presence of fluoride in saliva
  

• D) Overgrowth of only one bacterial species

What role do secondary colonizers play in the development of dental plaque?

• A) They initiate plaque formation
  

• B) They contribute to the maturation of the biofilm
  

• D) They only cause inflammation

• C) They have no significant role