8. In caries of the dentin, more dentinal tubules are found in the:
a. Infected layer.
b. Affected layer.
9. Caries in enamel may be caused by:
a. Acidogenic agents.
b. Proteolytic bacteria.
c. Lamella tract dissolution.
d. "a," "b," and "c."
e. "a" and "b."
SPECIAL INSTRUCTIONS FOR EXERCISES 10 THROUGH 15. Match the name of
the condition or disease in Column B to its description in Column A and write your
answer in the space provided at the beginning of the exercises..
___ 10. Cyst associated with root of a tooth
___ 11. Loss of tooth structure through physiological
or pathological means, which can be
observed on a radiograph
___ 12. Mechanical wearing away of tooth structure
___ 13. A soft pulpable mass overlying the pulp
chamber within the crown of the tooth
___ 14. Chronic inflammation of the periapical tissue
___ 15. Chemical wearing away of tooth structure