NBDHE Review Exam Tested Questions With Revised Correct Detailed Answers & Rationales Latest Update

NBDHE Review Exam Tested
Questions With Revised Correct
Detailed Answers & Rationales
>Latest Update>>

1. The anterior portion, or body, of the tongue develops from the:
A. Maxillary process
B. Globular process
C. Mandibular process
D. Second branchial arch
E. Rathke's pouch
C. Mandibular process
2. A specialized periosteum which forms and resorbs bone and cementum is
called:
A. Periodontal ligament
B. endosteum
C. Cortical bone
D. Lamina dura
E. Circumferential bone
A. Periodontal ligament
3. Facial development is completed duing the twelfth week of prenatal
development. __________
True
False
True

,4. The bottom of the gingival sulcus is marked by the:
A. Alveolar crest
B. Junctional epithelium
C. Sulcular epithelium
D. Periodontal ligament
E. Marginal gingiva
B. Junctional epithelium
5. Tongue development begins as a triangular median swelling, the tuberculum
impar. __________
A. True
B. False
True
6. A primary function of erythrocytes is to:
A. deliver oxygen to the cells of the body
B. provide immunity against some disease
C. help blood clot
D. maintain blood volume
E. clean up debris following infection
A. deliver oxygen to the cells of the body
7. Dentin is a product of the:
A. Dental papilla
B. Dental sac
C. Dental lamina
D. Dental cuticle
E. Dental organ
A. Dental papilla
8. The cementum, alveolar bone and periodontal ligament are derived from:
A. Dental sac
B. Reduced enamel epithelium
C. Stellate reticulum

,D. Dental papilla
E. Outer enamel epithelium
A. Dental sac
9. In gingivitis, poor tissue tone is caused by:
A. Bleeding
B. Large numbers of inflammatory cells
C. Destruction of collagen fibers
D. Dilation of blood vessels
C. Destruction of collagen fibers
10. One of the first structures of the face to develop in the primitive embryo is
the:
A. Stomodeum
B. Maxilla
C. Mandible
D. First branchial arch
E. Nose
A. Stomodeum
11. The outer, less calcified layer of cementum is called:
A. Acellular cementum
B. Cellular cementum
C. Sharpey's fibers
D. Cementicles
E. Cementoid
E. Cementoid
12. Hertwig's epithelial root sheath is derived from the:
A. Rests of Malassez
B. Periodontal ligament
C. Inner enamel epithelium
D. Primary enamel cuticle
E. Reduced enamel epithelium
E. Reduced enamel epithelium

, 13. A cleft lip occurs when the maxillary process fails to fuse with the:
A. Palatine process
B. Opposing maxillary process
C. Lateral nasal process
D. Globular process
E. Mandibular process
D. Globular process
14. Of the following tissues, which one or more have nerve innervation?
A. Enamel and cementum
B. Enamel, dentin, pulp and periodontal ligament
C. Dentin and enamel
D. Dentin, pulp and periodontal ligament
E. Pulp and periodontal ligament
E. Pulp and periodontal ligament
15. What does bleeding caused by probing indicate?
A. Ulceration of crevicular epithelium
B. Loss of crestal bone
C. An increase in gingival vasculature
D. Fibrosis in the connective tissue
E. Apical migration of junctional epithelium
A. Ulceration of crevicular epithelium
Which of the following would not be affected by the autonomic nervous system?
A. intestines
B. urinary system
C. reproductive organs
D. heart
E. skeletal system
E. skeletal system
Because of the proximity of odontoblastic cell bodies to nerve terminal endings in
the tooth, clinical exposure of dentin may result in sensitivity. What is the location
of the odontoblastic bodies?