Question 1

During the bell stage of tooth development,the ________ form enamel.

Accepted Answer

A) ameloblasts 
B) odontoblasts 
C) cementoblasts 
D) fibroblasts 
A) ameloblasts 
B) odontoblasts 
C) cementoblasts 
D) fibroblasts

Question 2

The portion of the tooth that is visible in the mouth is the:

Accepted Answer

A) root. 
B) clinical crown. 
C) anatomic crown. 
D) cementum. 
A) root. 
B) clinical crown. 
C) anatomic crown. 
D) cementum.

Question 3

The adult second premolar that replaces a primary second molar is called a(n)_________ tooth.

Accepted Answer

A) odontoblast 
B) crown 
C) succedaneous 
D) exfoliation 
A) odontoblast 
B) crown 
C) succedaneous 
D) exfoliation

Question 4

The first signs of tooth development are found in which of the following regions of the developing embryo?

Accepted Answer

A) Maxillary anterior 
B) Maxillary posterior 
C) Mandibular anterior 
D) Mandibular posterior 
A) Maxillary anterior 
B) Maxillary posterior 
C) Mandibular anterior 
D) Mandibular posterior

Question 5

________ mucosa is noted for its soft texture,moist surface,and ability to stretch and be compressed?

Accepted Answer

A) Masticatory 
B) Lining 
C) Specialized 
D) Gingival 
A) Masticatory 
B) Lining 
C) Specialized 
D) Gingival

Question 6

Which of the following is true of cementum?

Accepted Answer

A) Provides sensation to the tooth 
B) Overlies root dentin 
C) Forms the bulk of the tooth 
D) Transmits pain stimuli from the tooth 
A) Provides sensation to the tooth 
B) Overlies root dentin 
C) Forms the bulk of the tooth 
D) Transmits pain stimuli from the tooth

Question 7

The muscles of mastication are formed by the _______ branchial arch.

Accepted Answer

A) first 
B) second 
C) fourth 
D) sixth 
A) first 
B) second 
C) fourth 
D) sixth

Question 8

Radicular pulp:

Accepted Answer

A) is the part of the pulp that lies within the crown portion of the tooth. 
B) includes extensions of the pulp that project toward the cusp tips and incisal edges. 
C) is continuous with tissues of the periapical area through the apical foramen. 
D) is coronally located and becomes wider during development of the root. 
A) is the part of the pulp that lies within the crown portion of the tooth. 
B) includes extensions of the pulp that project toward the cusp tips and incisal edges. 
C) is continuous with tissues of the periapical area through the apical foramen. 
D) is coronally located and becomes wider during development of the root.

Question 9

The genetic factor that is most often of concern during prenatal tooth development is:

Accepted Answer

A) failure of the enamel to form properly. 
B) failure of the dentin to form properly. 
C) discrepancies in tooth and jaw size. 
D) Down syndrome. 
A) failure of the enamel to form properly. 
B) failure of the dentin to form properly. 
C) discrepancies in tooth and jaw size. 
D) Down syndrome.

Question 10

The periodontium supports the teeth within the:

Accepted Answer

A) alveolar process. 
B) cementum. 
C) periodontal ligament. 
D) enamel prism. 
A) alveolar process. 
B) cementum. 
C) periodontal ligament. 
D) enamel prism.

Question 11

Which of the following correctly depicts the sequence of primary tooth development?

Accepted Answer

A) Mandibular anterior then mandibular posterior 
B) Mandibular anterior then maxillary anterior 
C) Maxillary anterior then maxillary posterior 
D) Maxillary anterior then mandibular posterior 
A) Mandibular anterior then mandibular posterior 
B) Mandibular anterior then maxillary anterior 
C) Maxillary anterior then maxillary posterior 
D) Maxillary anterior then mandibular posterior

Question 12

Which of the following is the most reliable indicator of periodontal disease?

Accepted Answer

A) The alveolar socket around the entire crown of the tooth is resorbing. 
B) The alveolar process is increasing in size and shape. 
C) The periodontal ligament is narrowing. 
D) The alveolar crest is flattening out. 
A) The alveolar socket around the entire crown of the tooth is resorbing. 
B) The alveolar process is increasing in size and shape. 
C) The periodontal ligament is narrowing. 
D) The alveolar crest is flattening out.

Question 13

Anything that surrounds the apex of a tooth is known as:

Accepted Answer

A) endodontic. 
B) periodontic. 
C) periapical. 
D) circumferential. 
A) endodontic. 
B) periodontic. 
C) periapical. 
D) circumferential.

Question 14

Teeth form from which of the following primordial layer(s)?

Accepted Answer

A) Ectoderm 
B) Mesoderm 
C) Endoderm 
D) Ectoderm and mesoderm 
A) Ectoderm 
B) Mesoderm 
C) Endoderm 
D) Ectoderm and mesoderm

Question 15

Which statement is not true of dentin?

Accepted Answer

A) Dentin composes the main portion of the tooth structure. 
B) Dentin extends almost the entire length of the tooth. 
C) Dentin is characterized by Hunter-Schreger bands. 
D) Dentin is capable of growth and repair. 
A) Dentin composes the main portion of the tooth structure. 
B) Dentin extends almost the entire length of the tooth. 
C) Dentin is characterized by Hunter-Schreger bands. 
D) Dentin is capable of growth and repair.

Question 16

Which of the following dental developmental disturbances occurs when the enamel organ invaginates into the dental papilla?

Accepted Answer

A) Gemination 
B) Microdontia 
C) Anodontia 
D) Dens in dente 
A) Gemination 
B) Microdontia 
C) Anodontia 
D) Dens in dente

Question 17

Oral mucosa is composed of which of the following types of epithelium?

Accepted Answer

A) Cuboidal 
B) Simple squamous 
C) Stratified squamous 
D) Ciliated pseudostratified columnar 
A) Cuboidal 
B) Simple squamous 
C) Stratified squamous 
D) Ciliated pseudostratified columnar

Question 18

Every tooth consists of a _______ and one or more roots.

Accepted Answer

A) superstructure 
B) crown 
C) frame 
D) foundation 
A) superstructure 
B) crown 
C) frame 
D) foundation

Question 19

Fusion of the palate begins from the _________ during the ________week.

Accepted Answer

A) anterior; ninth 
B) anterior; twelfth 
C) posterior; ninth 
D) posterior; twelfth 
A) anterior; ninth 
B) anterior; twelfth 
C) posterior; ninth 
D) posterior; twelfth

Question 20

Fungiform papillae and their associated taste buds are considered a part of which of the following types of mucosa?

Accepted Answer

A) Specialized 
B) Lining 
C) Gingival 
D) Masticatory 
A) Specialized 
B) Lining 
C) Gingival 
D) Masticatory

Exam 8: Oral Embryology and Histology

During the bell stage of tooth development,the ________ form enamel.

The portion of the tooth that is visible in the mouth is the:

The adult second premolar that replaces a primary second molar is called a(n)_________ tooth.

The first signs of tooth development are found in which of the following regions of the developing embryo?

________ mucosa is noted for its soft texture,moist surface,and ability to stretch and be compressed?

Which of the following is true of cementum?

The muscles of mastication are formed by the _______ branchial arch.

Radicular pulp:

The genetic factor that is most often of concern during prenatal tooth development is:

The periodontium supports the teeth within the:

Which of the following correctly depicts the sequence of primary tooth development?

Which of the following is the most reliable indicator of periodontal disease?

Anything that surrounds the apex of a tooth is known as:

Teeth form from which of the following primordial layer(s)?

Which statement is not true of dentin?

Which of the following dental developmental disturbances occurs when the enamel organ invaginates into the dental papilla?

Oral mucosa is composed of which of the following types of epithelium?

Every tooth consists of a _______ and one or more roots.

Fusion of the palate begins from the _________ during the ________week.

Fungiform papillae and their associated taste buds are considered a part of which of the following types of mucosa?

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

Fusion of the palate begins from the _ during the week.