1. Which of the following embryologic elements is responsible for the formation of the enamel on the surface of the tooth?

2. A unicystic ameloblastoma is characterized by all of the following EXCEPT:

3. Which of the following lesions is known as a Pindborg tumor?

4. This cystic lesion is characterized by a stratified squamous epithelium (at least partially), a well defined basal layer of cuboidal to columnar cells (may resemble ameloblasts), and ghost cells (similar to a pilomatricoma). The best answer is:

5. This lesion is characterized by a poorly differentiated conglomeration of dentin, cementum, and enamel. There are usually found in the first two decades of life. The best diagnosis is:

6. A 30 y/o patient is found to have a solid jaw lesion. Surgical excision is performed, and representative images are shown for review. Based on the findings, which of the following is the best diagnosis?

7. A 31 /o male had a destructive jaw lesion which was surgically removed. Representative images from the case are shown. Based on the findings, which of the following is the best diagnosis?

8. Which of the following lesions is associated with McCune Albright Syndrome:

9. The periodontal ligament anchors the tooth to the bone socket of the jaw and maxilla. Which of the following embryological elements is responsible for the formation of periodontal ligament?

10. Gorlin syndrome (nevoid basal cell nevus syndrome) is associated with which of the following:

11. A 30 y/o patient is found to have a solid jaw lesion. Surgical excision is performed, and representative images are shown for review. Based on the findings, which of the following is the best diagnosis?

12. A 30 y/o patient is found to have a solid jaw lesion. Surgical excision is performed, and representative images are shown for review. Based on the findings, which of the following is the best diagnosis?

13. A 28 y/o female presents with a cystic jaw lesion. The cyst is curetted and representative images are shown. Based on the findings, which of the following is the best diagnosis?

14. This lesion usually occurs in children or young adults, is often associated with trauma, and may be secondary to slow, minute, recurrent hemorrhages. The most likely diagnosis is:

15. A 30 y/o patient is found to have a solid jaw lesion. Surgical excision is performed, and representative images are shown for review. Based on the findings, which of the following is the best diagnosis?