Dental Science
Exam Answer Key
Course Introduction
Dental Science is an interdisciplinary field that encompasses the study of the structure, function, and diseases of the oral cavity and related tissues. The course covers fundamental topics such as dental anatomy, oral histology, oral microbiology, pathology, and pharmacology, as well as clinical practices related to diagnosis, prevention, and treatment of oral diseases. Students will also explore the principles of oral hygiene, patient care, restorative dentistry, and dental materials, preparing them for both clinical settings and further specialized study. Emphasis is placed on understanding the integral role of oral health in overall health and developing professional skills essential for modern dental practice.
Recommended Textbook
Essentials of Oral Histology and Embryology A Clinical Approach 4th Edition by Daniel J. Chiego
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16 Chapters
514 Verified Questions
514 Flashcards
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Chapter 1: Development and Structure of Cells and Tissues
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34 Verified Questions
34 Flashcards
Source URL: https://quizplus.com/quiz/9024
Sample Questions
Q1) Which phase of the cell cycle is characterized as the initial resting stage?
A) S phase
B) G1 phase
C) G2 phase
D) Prophase
Answer: B
Q2) Which organelle produces microtubules?
A) Nucleus
B) Centriole
C) Golgi apparatus
D) Endoplasmic reticulum
Answer: B
Q3) Name two hormones produced by the placenta.
Answer: Students should answer with two of the following: estrogen,progesterone,human chorionic gonadotropin,placental growth factor,human placental lactogen,and lactogenic hormone.
Q4) The embryonic skeleton first forms as bone.
A)True
B)False
Answer: False
Page 3
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Chapter 2: Structure and Function of Cells, Tissues, and Organs
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36 Verified Questions
36 Flashcards
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Sample Questions
Q1) Which term represents a single layer of cells?
A) Simple
B) Stratified
C) Cuboidal
D) Columnar
Answer: A
Q2) _______ line the respiratory tract to move foreign particles out of the respiratory system.
Answer: Cilia
Q3) Which organ system secretes and regulates hormones in the blood?
Answer: Endocrine system
Q4) Which of the following insulates axons located outside the CNS?
A) Bone
B) Endomysium
C) Myelin sheath
D) Connective tissue
Answer: C
Q5) Which two layers compose the skin?
Answer: Epidermis,dermis
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Chapter 3: Development of the Oral Facial Region
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31 Verified Questions
31 Flashcards
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Sample Questions
Q1) The superior parathyroid develops from the ________ pharyngeal pouch,whereas the inferior parathyroid develops from the _______.
A) fourth, third
B) third, fourth
C) fifth, second
D) second, fifth
Answer: A
Q2) Which bones support the palatine shelf?
A) Maxillary
B) Temporal
C) Zygomatic
D) Mandibular
Answer: A
Q3) Which gland regulates the body's calcium balance?
Answer: Parathyroid
Q4) The ____ ____ is a cartilage structure,which underlies and supports the brain.
Answer: cranial base
Q5) In which two locations do pharyngeal fistulas open to drain?
Answer: Side of the neck,pharynx
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Chapter 4: Development of the Face and Palate
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29 Flashcards
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Sample Questions
Q1) In which direction do the palatine shelves grow on contact with the tongue in the seventh prenatal week?
Q2) A combination of genetic and _____ factors are associated with palatal and facial clefts.
A) social
B) behavioral
C) age-related
D) environmental
Q3) The _________ separates the oral and nasal cavities.
Q4) A swelling that opens on the surface of the neck is called a thyroglossal
A) cyst
B) duct
C) gland
D) fistula
Q5) Which muscle grows around the oral pit in the sixth prenatal week?
A) Buccinator
B) Mylohyoid
C) Orbicularis oris
D) Zygomatic major
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Chapter 5: Development of Teeth
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32 Flashcards
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Sample Questions
Q1) Primary teeth begin development at birth.
A)True
B)False
Q2) Accessory root canals connect the __________.
A) cementum with the enamel
B) pulp with the periodontal ligament
C) dentin with the alveolar bone proper
D) enamel with the junctional epithelium
Q3) Tomes processes develop in which stage of ameloblast differentiation?
A) Secretion
B) Protection
C) Maturation
D) Organization
Q4) The successional lamina is vital to the development of primary teeth.
A)True
B)False
Q5) Tooth development relies on an interaction between the ectoderm and mesenchyme.
A)True
B)False
Q6) _________ bone forms between the roots of multirooted teeth.
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Chapter 6: Eruption and Shedding of the Teeth
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Sample Questions
Q1) Root formation begins when which of the following occurs?
A) The epithelial root sheath proliferates.
B) The tooth's crown tip enters the oral cavity.
C) Fibrous tissue surrounding the follicle increases.
D) Reduced enamel epithelium contacts and fuses with the oral epithelium.
Q2) Primary and permanent teeth have a similar enamel prism structure.
A)True
B)False
Q3) Name two characteristics of both primary and permanent dentitions.
Q4) Tooth eruption is clinically seen as which of the following?
A) Light and dark bands
B) Interlocking of the rods
C) Blanching of the mucosa
D) Crystallization of the enamel rods
Q5) Which structure(s)increase(s)the surface area of the osteoclast?
A) Fibroblasts
B) Ruffled border
C) Periodontal fibers
D) Epithelial diagram
Q6) _________ are not successors of primary teeth.
Page 8
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Chapter 7: Enamel
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Sample Questions
Q1) Prismless enamel is characterized by numerous and pronounced Hunter-Schreger bands.
A)True
B)False
Q2) Incremental lines result from the rhythmic,recurrent deposition of enamel.
A)True
B)False
Q3) In the Hunter-Schreger phenomenon,adjacent rod groups lie at right angles to each other.
A)True
B)False
Q4) An enamel ______ houses a small extension of a living odontoblast.
A) rod
B) tuft
C) spindle
D) lamellae
Q5) Hunter-Schreger bands extend through half to two thirds of the enamel.
A)True
B)False
Q6) The surface of an enamel rod is called the ______ _______.
Page 9
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Chapter 8: Dentin
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Sample Questions
Q1) Which type of dentin separates mantle dentin from circumpulpal dentin?
A) Granular
B) Globular
C) Transparent
D) Reactionary
Q2) Which is the following is a hypermineralized collar of dentin that grows within the tubule?
A) Sclerotic dentin
B) Peritubular dentin
C) Intertubular dentin
D) Interglobular dentin
Q3) The appositional growth of dentin is apparent in which feature?
A) Incremental lines
B) Lateral canaliculi
C) Transparent dentin
D) Interglobular spaces
Q4) Secondary dentin is the result of insufficient mineralization.
A)True
B)False
Q5) An ________ __________ is the defining characteristic of globular dentin.
Page 10
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Chapter 9: Dental Pulp
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Sample Questions
Q1) The odontogenic zone is composed of a cell-free zone,a cell-rich zone,odontoblasts,and the parietal plexus of nerves.
A)True
B)False
Q2) The largest blood vessels in dental pulp are controlled by the ______ nervous system.
Q3) In which theory is pain the result of odontoblastic movement into nerve endings?
A) Transduction
B) Hydrodynamic
C) Pain transmission
D) Direct innervation
Q4) Radicular pulp is singular in all permanent teeth.
A)True
B)False
Q5) Desmosomes maintain the positional relationship between cells.
A)True
B)False
Q6) Teeth only perceive the sensation of pain.
A)True
B)False
Page 11
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Chapter 10: Cementum
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Sample Questions
Q1) Incremental lines in cementum indicate _________.
A) trauma
B) rhythmic deposition
C) developmental anomalies
D) the presence of odontocytes
Q2) Intermediate cementum forms completely,before the deposition of secondary cementum begins.
A)True
B)False
Q3) Which of the following is formed by cementoblasts and maintained by cementocytes?
A) Extrinsic fiber bundles
B) Intrinsic fibers of cementum
C) Calcified ligament fiber bundles
D) Principal fibers of the periodontal ligament.
Q4) Intermediate cementum is softer than dentin.
A)True
B)False
Q5) Following resorption,cemental repair is a function of the ____________.
Q6) In terms of cementum formation,what does OMG stand for?
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Chapter 11: Periodontium: Periodontal Ligament
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Sample Questions
Q1) ______________ create and destroy collagen fibers,as needed.
A) Fibroblasts
B) Osteoclasts
C) Macrophages
D) Cementoblasts
Q2) The most important function of the periodontal ligament is to sense movement.
A)True
B)False
Q3) Interstitial spaces contain _______ _______ and nerve trunks that maintain the vitality of the periodontal ligament (PDL).
Q4) Epithelial rests always occur along the root surface.
A)True
B)False
Q5) Which pressure receptors are found in the periodontal ligament?
A) Ruffini
B) Pacinian
C) Meissner
D) All of the above
Q6) Name two objects in the periodontal ligament that are phagocytosed by macrophages.
Page 13
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Chapter 12: Periodontium: Alveolar Process and Cementum
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Sample Questions
Q1) Identify and describe two types of bone loss.
Q2) ___________ canals pass through the long axis of the bone.
Q3) Fenestration is best defined as which of the following?
A) Coronal border of the alveolar process
B) Bone loss in the coronal area of the root
C) Bone loss where the apical root penetrates cortical bone
D) Bundle of collagen fibers embedded in the alveolar bone proper
Q4) ______ ______ penetrate haversian canals at right angles to form a nutrient network.
Q5) Which movement is associated with tooth loss or hypereruption?
A) Body
B) Tipping
C) Rotation
D) Mesial drift
Q6) Aged alveolar bone lacunae are filled with cementocytes.
A)True
B)False
Q7) Teeth are slightly more mobile in the _______________.
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Q8) Tooth loss causes loss of periodontal fibers,as well as loss of _______ ________.
Chapter 13: Temporomandibular Joint
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Sample Questions
Q1) Which ligament extends down the medial side of the ramus to insert on the lingula?
A) Stylohyoid
B) Stylomandibular
C) Sphenomandibular
D) Temporomandibular
Q2) No epiphyseal line is found in the TMJ condyle.
A)True
B)False
Q3) The articular fossa undergoes which developmental change?
A) Deepens and expands
B) Becomes brittle and narrow
C) Loses flexibility and perforates
D) Becomes increasingly scalloped in shape
Q4) Which of the following is not a function of the temporomandibular joint (TMJ)?
A) Speech
B) Deglutition
C) Respiration
D) Mastication
Q5) The postnatal condylar head is a thick band of ___________.
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Chapter 14: Oral Mucosa
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Sample Questions
Q1) Lymphocytes and leukocytes appear most often beneath the __________ epithelium
Q2) Taste buds are derived from the surrounding epithelium and are not associated with nerve endings of the tongue.
A)True
B)False
Q3) Nonkeratinocytes are also known as __________ cells.
Q4) Ectopic sebaceous glands at the angle of the mouth are called ______ _______.
Q5) Which of the following best defines hemidesmosomes?
A) Discoid cells anchored by tonofibrils
B) Sebaceous glands located at the angles of the mouth
C) Minute disks that attach basal cells to the basal lamina
D) Cuboidal cells providing a basal layer for lining mucosa
Q6) Oval or polygonal cells differentiate which layer of mucosa?
A) Basal lamina
B) Stratum corneum
C) Stratum spinosum
D) Stratum granulosum
Q7) Hemidesmosomes attach the lamina propria to the stratum basal.
Page 16
A)True
B)False
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Chapter 15: Salivary Glands and Tonsils
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Sample Questions
Q1) Name the three major salivary glands.
Q2) Which salivary component facilitates the breakdown of carbohydrates?
A) Mucin
B) Protein
C) Zymogen granules
D) Immunoglobulin A
Q3) Which structural characteristic makes the palatine tonsil susceptible to infection?
A) Large size
B) Deep crypts
C) Septa capsule
D) Germinal centers
Q4) The duct system consists of secretory and ____________ portions.
Q5) Pharyngeal tonsils are covered in stratified squamous epithelium or respiratory epithelium.
A)True
B)False
Q6) Name the ducts that lead from the parotid and submandibular salivary glands.
Q7) The _______ is a cluster of pyramidal cells.
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Q8) The function of amylase is to aid in the digestion of _____________________.
Chapter 16: Biofilms
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Sample Questions
Q1) Which of the following is the best definition for plaque?
A) A type of gingival inflammation
B) A stonelike concretion formed on the teeth
C) A bacterial biofilm on the surface of the teeth
D) An acellular thin film deposited on the surface of teeth from salivary proteins
Q2) The primary component of calculus is __________.
A) serum
B) bacteria
C) calcium
D) hydroxyapatite
Q3) Which organisms attach to the pellicle to form a thick layer of plaque?
A) Rods
B) Filamentous organisms
C) Desquamated epithelial cells
D) All of the above
Q4) Gingival inflammation has an effect on the cervical enamel.
A)True
B)False
Q5) Which disclosing solution will not permanently discolor composite restorations?
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