Microbiology Homework DUE November 14, 2007

Reach pages 652 to 656 in your text.

1. Draw the anatomy of a tooth. Labeling all parts as figure 21.28 – DO not photocopy this figure and paste it in, I want you to draw it and label it!

2. What is the most common human disease?

3. What are the principle stages in the formation of dental caries?

4. Outline what happens in each of these stages?

5. What role do Streptococcus mutans and Streptococcus sobrinus play in the production of dental caries?

6. Which are the secondary invaders?

7. If plaque is not removed from the tooth, what do streptococci and lactobacilli do that causes harm to the tooth?

8. What is the most common predisposing condition for periodontal disease?

a. What is this porous substance called?

b. What does this substance do?

9. After the damage to the gums, what type of bacteria enter the area?

a. What causes further inflammation?

10. What is the ultimate effect of periodontis?

11. What is the most destructive periodontal disease?

12. What effect does nutrition have on dental disease?

a. What is the greatest way to control dental disease?

13. Once calculus has formed, how is it removed?