Question 1

Which of the following is the name for the periodontal ligament fibers that are embedded in cementum and bone?

Accepted Answer

A) Gingival fibers 
B) Sharpey's fibers 
C) Interradicular fibers 
D) Lamina dura 
A) Gingival fibers 
B) Sharpey's fibers 
C) Interradicular fibers 
D) Lamina dura B

Question 2

Embryology is the study of prenatal development throughout the:

Accepted Answer

A) embryonic period. 
B) stages before birth. 
C) ninth week up until birth. 
D) the first week after fertilization. 
A) embryonic period. 
B) stages before birth. 
C) ninth week up until birth. 
D) the first week after fertilization. B

Question 3

The __________ is the dense outer covering of the bone of the alveolar process and provides strength for the place where skeletal muscles attach.

Accepted Answer

A) bony projection 
B) alveolar process 
C) cortical plate 
D) lamina dura 
A) bony projection 
B) alveolar process 
C) cortical plate 
D) lamina dura C

Question 4

Which of the following constitutes the bulk of the tooth?

Accepted Answer

A) Pulp 
B) Apex 
C) Enamel 
D) Dentin 
A) Pulp 
B) Apex 
C) Enamel 
D) Dentin

Question 5

Which statement is not true about teratogens?

Accepted Answer

A) Teratogens may cause birth defects. 
B) Drinking alcohol during pregnancy is considered a teratogen. 
C) Taking antibiotics during pregnancy could be considered a teratogen. 
D) Teratogens are genetic factors that are passed from generation to generation. 
A) Teratogens may cause birth defects. 
B) Drinking alcohol during pregnancy is considered a teratogen. 
C) Taking antibiotics during pregnancy could be considered a teratogen. 
D) Teratogens are genetic factors that are passed from generation to generation.

Question 6

The periodontal ligament connects the ______ of the tooth to the alveolar bone.

Accepted Answer

A) cementum 
B) dentin 
C) apical foramen 
D) inner enamel epithelium 
A) cementum 
B) dentin 
C) apical foramen 
D) inner enamel epithelium

Question 7

The development of a supernumerary (extra)tooth is considered to be due to which of the following causes?

Accepted Answer

A) Teratogen 
B) Hereditary 
C) Displacement 
D) Toxin 
A) Teratogen 
B) Hereditary 
C) Displacement 
D) Toxin

Question 8

Which of the following is the correct sequence for the growth periods of a tooth?

Accepted Answer

A) Bud, cap, bell 
B) Bell, cap, bud 
C) Cap, bud, bell 
D) Bell, bud, cap 
A) Bud, cap, bell 
B) Bell, cap, bud 
C) Cap, bud, bell 
D) Bell, bud, cap

Question 9

Why is the mother's dental health during pregnancy a concern for the baby?

Accepted Answer

A) It is a genetic factor. 
B) Maternal infection can harm the child. 
C) It can cause tooth and jaw size discrepancies. 
D) The mother does not affect the dental health of the baby. 
A) It is a genetic factor. 
B) Maternal infection can harm the child. 
C) It can cause tooth and jaw size discrepancies. 
D) The mother does not affect the dental health of the baby.

Question 10

Which of the following is the correct sequence of the periods of prenatal development?

Accepted Answer

A) Blastula, gastrula, and morula periods. 
B) Preimplantation, embryonic, and fetal periods. 
C) Implantation, ectodermal, and fetal periods. 
D) Conception, zygote, and embryonic periods. 
A) Blastula, gastrula, and morula periods. 
B) Preimplantation, embryonic, and fetal periods. 
C) Implantation, ectodermal, and fetal periods. 
D) Conception, zygote, and embryonic periods.

Question 11

Formation has begun on all primary dentition at ______ month(s).

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
A) 1 
B) 2 
C) 3 
D) 4

Question 12

Enamel is ________ and ranges in color from yellow to grayish white.

Accepted Answer

A) opaque 
B) translucent 
C) transparent 
D) composed of dentinal tubules 
A) opaque 
B) translucent 
C) transparent 
D) composed of dentinal tubules

Question 13

Generally,the first primary teeth to erupt into the mouth are the:

Accepted Answer

A) maxillary central incisors. 
B) mandibular central incisors. 
C) maxillary first molars. 
D) mandibular first molars. 
A) maxillary central incisors. 
B) mandibular central incisors. 
C) maxillary first molars. 
D) mandibular first molars.

Question 14

Pulp is made up of blood vessels and nerves that enter the pulp chamber through the:

Accepted Answer

A) coronal pulp. 
B) apical foramen. 
C) pulp horns. 
D) root pulp. 
A) coronal pulp. 
B) apical foramen. 
C) pulp horns. 
D) root pulp.

Question 15

The face begins to develop during the fourth week of pregnancy within the _______ period.

Accepted Answer

A) preimplantation 
B) embryonic 
C) fetal 
D) proliferative 
A) preimplantation 
B) embryonic 
C) fetal 
D) proliferative

Question 16

The attachment apparatus that retains the tooth in its functional position in the jaw includes the cementum,alveolar process,and:

Accepted Answer

A) enamel. 
B) apical foramen. 
C) periodontal ligament. 
D) dentin. 
A) enamel. 
B) apical foramen. 
C) periodontal ligament. 
D) dentin.

Question 17

Which of the following types of cells form new bone?

Accepted Answer

A) Osteoblasts 
B) Osteoclasts 
C) Osteocytes 
D) Fibroblasts 
A) Osteoblasts 
B) Osteoclasts 
C) Osteocytes 
D) Fibroblasts

Question 18

The cells differentiate and become specialized in a process called ______ during the bell stage of tooth formation.

Accepted Answer

A) initiation 
B) proliferation 
C) histodifferentiation 
D) morphodifferentiation 
A) initiation 
B) proliferation 
C) histodifferentiation 
D) morphodifferentiation

Question 19

The _________ of the erupting tooth fuses with the oral epithelium during active tooth eruption and provides a pathway for the erupting tooth.

Accepted Answer

A) dental sac 
B) cementoenamel junction 
C) reduced enamel epithelium 
A) dental sac 
B) cementoenamel junction 
C) reduced enamel epithelium

Question 20

What is the difference between secondary dentin and tertiary dentin?

Accepted Answer

A) Secondary dentin forms before the tooth erupts and continues forming during the life of the tooth while tertiary dentin forms after eruption, composing the bulk of the tooth. 
B) Secondary dentin forms after the tooth is erupted as a response to irritation, whereas tertiary dentin appears within the wall of the pulp chambers. 
C) Tertiary dentin forms as a response to irritation. 
D) Secondary dentin forms on the apical half of the root, whereas tertiary dentin does not. 
A) Secondary dentin forms before the tooth erupts and continues forming during the life of the tooth while tertiary dentin forms after eruption, composing the bulk of the tooth. 
B) Secondary dentin forms after the tooth is erupted as a response to irritation, whereas tertiary dentin appears within the wall of the pulp chambers. 
C) Tertiary dentin forms as a response to irritation. 
D) Secondary dentin forms on the apical half of the root, whereas tertiary dentin does not.

Exam 8: Oral Embryology and Histology

Which of the following is the name for the periodontal ligament fibers that are embedded in cementum and bone?

Embryology is the study of prenatal development throughout the:

The __________ is the dense outer covering of the bone of the alveolar process and provides strength for the place where skeletal muscles attach.

Which of the following constitutes the bulk of the tooth?

Which statement is not true about teratogens?

The periodontal ligament connects the ______ of the tooth to the alveolar bone.

The development of a supernumerary (extra)tooth is considered to be due to which of the following causes?

Which of the following is the correct sequence for the growth periods of a tooth?

Why is the mother's dental health during pregnancy a concern for the baby?

Which of the following is the correct sequence of the periods of prenatal development?

Formation has begun on all primary dentition at ______ month(s).

Enamel is ________ and ranges in color from yellow to grayish white.

Generally,the first primary teeth to erupt into the mouth are the:

Pulp is made up of blood vessels and nerves that enter the pulp chamber through the:

The face begins to develop during the fourth week of pregnancy within the _______ period.

The attachment apparatus that retains the tooth in its functional position in the jaw includes the cementum,alveolar process,and:

Which of the following types of cells form new bone?

The cells differentiate and become specialized in a process called ______ during the bell stage of tooth formation.

The _________ of the erupting tooth fuses with the oral epithelium during active tooth eruption and provides a pathway for the erupting tooth.

What is the difference between secondary dentin and tertiary dentin?

History of Dentistry

The Professional Dental Assistant

The Dental Healthcare Team

Dental Ethics

Dentistry and the Law

General Anatomy

General Physiology

Head and Neck Anatomy

Landmarks of the Face and Oral Cavity

Overview of the Dentitions

Tooth Morphology

Dental Caries

Periodontal Disease

Preventive Dentistry

Nutrition

Oral Pathology

Microbiology

Disease Transmission and Infection Prevention

Principles and Techniques of Disinfection

Principles and Techniques of Instrument Processing and Sterilization

Regulatory and Advisory Agencies

Chemical and Waste Management

Dental Unit Waterlines

Ergonomics

The Patient Record

Vital Signs

Oral Diagnosis and Treatment Planning

The Special Needs and Medically Compromised Patient

Principles of Pharmacology

Assisting in a Medical Emergency

The Dental Office

Delivering Dental Care

Dental Hand Instruments

Dental Handpieces and Accessories

Moisture Control

Anesthesia and Pain Control

Foundations of Radiography, Radiographic Equipment, and Radiation Safety

Digital Imaging, Dental Film, and Processing Radiographs

Legal Issues, Quality Assurance, and Infection Prevention

Intraoral Imaging

Extraoral Imaging

Restorative and Esthetic Dental Materials

Dental Liners, Bases, and Bonding Systems

Dental Cements

Impression Materials

Laboratory Materials and Procedures

General Dentistry

Matrix Systems for Restorative Dentistry

Fixed Prosthodontics

Provisional Coverage

Removable Prosthodontics

Dental Implants

Endodontics

Periodontics

Oral and Maxillofacial Surgery

Pediatric Dentistry

Coronal Polishing

Dental Sealants

Orthodontics