Biofilm & Microscope

Acquired pellicle forms...

• Within minutes after polishing

• It is fully formed in 30-90 minutes

• as protection

• as an attachment for biofilm and calculus

Microorganism associated with gingivitis include

What is materia alba?

• Bacteria

• Epithelial cells

• Leukocytes

• Food debirs

What is the name of this part of the microscope?

What microorganisms are associated with a well cleaned mouth?

• Gram + cocci

• Gram - spirochetes

• Gram - vibrio

• Fusobacteria

Which timeframe are you likely to see bleeding, inflammation and edematous tissues?

• 2-3 days

• 4-7 days

• 7-9 days

• 10-21 days

What is the critical level of pH for enamel demineralization?

• 5.5

• 5.7

• 5.8

• 5.9

What is the critical level of pH for cementum demineralization?

• 6.4

• 6.7

• 6.8

• 5.5

How many areas of calculus do you see on the mandibular molars and premolars