Deck 6: Eruption and Shedding of the Teeth

Question 1

Which of the following is the origin of osteoclasts?

A) Fibroclasts
B) Monocytes
C) Amino acids
D) Root resorption

Answer 1

Monocytes

Question 2

The lack of development of the pulp proliferative zone leads to root formation failure.

Answer 2

True

Question 3

The permanent teeth that replace the primary teeth are called ______.

A) supportive
B) accessional
C) overlapping
D) successional

Answer 3

successional

Question 4

The mixed dentition phase occurs from approximately _____ years of age.

A) birth to 2
B) 3 to 6
C) 8 to 12
D) 13 to 18

Question 5

Which of the following best defines ankylosis?

A) A fusion of tooth roots
B) A process that leads to tooth eruption
C) The removal of bone overlying the bony crypt
D) The eruption of a tooth into a space occupied by an opposing tooth

Question 6

Which defines the functional eruption phase?

A) The first phase of tooth eruption, which includes eruptive movements during crown formation
B) The final stage, which includes occlusal wear of the enamel
C) The process of initiation of root development into the oral cavity
D) The final stage, in which the teeth require adjustments relative to the bony crypt

Question 7

Which permanent tooth develops without a primary predecessor?

A) Molar
B) Incisor
C) Canine
D) Premolar

Question 8

Active osteoclasts are multinucleated.

Question 9

Osteoblasts are the active cells in both the formation and degradation of the collagen fibers.

Question 10

Eruptive movement occurs occlusally through the bony crypt of the jaws to reach the mucosa.

Question 11

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

Question 12

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.

Question 13

Shedding is the loss of mixed dentition caused by resorption of the roots.

Question 14

The prefunctional eruptive phase is characterized by dormancy in the tissues overlying,surrounding,and underlying the teeth.

Question 15

Special _______ cells destroy collagen fibers by ingestion.

A) fibroblast
B) osteoclast
C) osteoblast
D) amino acid

Question 16

The size difference between a primary molar and a permanent premolar is called the ____.

A) leeway space
B) furcation zone
C) parietal plexus
D) incisor liability

Question 17

Hard tissue resorption is composed of which two phases?

A) Mineral and collagen phases
B) Prefunctional and functional phases
C) Extracellular and intracellular phases
D) Fibroclast eruptive and osteoclast functional phases

Question 18

The ______ stage of tooth development contains permanent and primary teeth in various stages of formation.

A) preeruptive
B) mixed dentition
C) late prefunctional
D) functional eruptive

Question 19

Which structure(s)increase(s)the surface area of the osteoclast?

A) Fibroblasts
B) Ruffled border
C) Periodontal fibers
D) Epithelial diagram

Question 20

The reduced enamel epithelium fuses with the oral epithelium during prefunctional eruption.

Question 21

_________ are not successors of primary teeth.

Question 22

The formation of the eruption ____________ is necessary for tooth eruption.

Question 23

Fusion of the tooth (reduced enamel epithelium)with the oral epithelium forms the __________ epithelium.

Question 24

Name two characteristics of both primary and permanent dentitions.

Question 25

Enamel is twice as thick in permanent teeth as it is in primary teeth.

Question 26

Final maturation of the PDL fibers occurs at the _____ _____.

Question 27

Briefly describe why humans are considered diphyodonts.

Question 28

Primary and permanent teeth have a similar enamel prism structure.

Question 29

During eruption,the epithelial attachment shifts to the cervical area.

Question 30

The eruption process is rapid and continuous.