TCDHA OROFACIAL SEM 1 FINAL
TEST / 2025 / DETAILED QUESTIONS
AND ANSWERS / GRADED A+
What are the 4 tooth tissues?
Enamel, dentin, cementum and dental pulp
Is pulp a soft tissue?
Yes
What is the hardest tissue in the human body?
Enamel
What gives enamel the ability to resist the wear the crown of a
tooth is subjected to?
Dense mineralization
Which tooth tissue has a self-cleaning ability?
Enamel
Which tooth tissue forms the main portion or body of the tooth?
Dentin
Which tooth tissue is underneath enamel and cementum?
Dentin
Which tooth tissue is made up of hard, dense, calcified tissue?
Dentin
Dentin is softer than enamel?
True
Dentin is harder than cementum and bone?
True
Which tooth tissue is yellow in colour and elastic in nature?
Dentin
What does secondary dentin do?
Adds to itself
When is reparative dentin laid down?
As a response to trauma
Which tooth tissue is a bone-like substance that covers the root?
Cementum
Which tooth tissue protects and support the tooth?
Cementum
Which tooth tissues main function is to allow attachment of tooth
to alveolar bone?
, Cementum
What are the 2 types of cementum?
Cellular and acellular
Where is cellular cementum located?
Apical 1/3 of root
Can cellular cementum reproduce itself?
Yes
Where is acellular cementum located?
Covers most of the anatomical root
What are the cells that produce cementum called?
Cementoblasts
Where does the cementum get its nutrients?
From the outside of the tooth (through blood vessels that come directly
from the bone)
Where is the pulp housed?
Housed in the center of the tooth, with the dentin surrounding the pulp
tissue
What is the pulp?
A nourishing, sensory, dentin-reparative system of tooth
What is the pulp composed of?
Blood vessels, lymph vessels, connective tissue, nerve tissue (pain),
and special dentin-forming cells called odontoblasts
What are the teeth least likely to have proximal root concavities?
Maxillary canine, mandibular central incisor, mandibular canine,
maxillary canine incisor
Designed to hold or grasp food
Canines
Longest teeth in the human dentition
Canines
Designed to hold and grind food
Premolars
Designed to cut
Incisors
Lingual surface is shovel shaped to guide food into mouth
Incisors
What feature of the canines protects the jaw joint during side jaw
movements?
Length and thickness
What feature of the canines helps resist displacement?
Triangular in shape
Designed to chew or grind food
Molars
TEST / 2025 / DETAILED QUESTIONS
AND ANSWERS / GRADED A+
What are the 4 tooth tissues?
Enamel, dentin, cementum and dental pulp
Is pulp a soft tissue?
Yes
What is the hardest tissue in the human body?
Enamel
What gives enamel the ability to resist the wear the crown of a
tooth is subjected to?
Dense mineralization
Which tooth tissue has a self-cleaning ability?
Enamel
Which tooth tissue forms the main portion or body of the tooth?
Dentin
Which tooth tissue is underneath enamel and cementum?
Dentin
Which tooth tissue is made up of hard, dense, calcified tissue?
Dentin
Dentin is softer than enamel?
True
Dentin is harder than cementum and bone?
True
Which tooth tissue is yellow in colour and elastic in nature?
Dentin
What does secondary dentin do?
Adds to itself
When is reparative dentin laid down?
As a response to trauma
Which tooth tissue is a bone-like substance that covers the root?
Cementum
Which tooth tissue protects and support the tooth?
Cementum
Which tooth tissues main function is to allow attachment of tooth
to alveolar bone?
, Cementum
What are the 2 types of cementum?
Cellular and acellular
Where is cellular cementum located?
Apical 1/3 of root
Can cellular cementum reproduce itself?
Yes
Where is acellular cementum located?
Covers most of the anatomical root
What are the cells that produce cementum called?
Cementoblasts
Where does the cementum get its nutrients?
From the outside of the tooth (through blood vessels that come directly
from the bone)
Where is the pulp housed?
Housed in the center of the tooth, with the dentin surrounding the pulp
tissue
What is the pulp?
A nourishing, sensory, dentin-reparative system of tooth
What is the pulp composed of?
Blood vessels, lymph vessels, connective tissue, nerve tissue (pain),
and special dentin-forming cells called odontoblasts
What are the teeth least likely to have proximal root concavities?
Maxillary canine, mandibular central incisor, mandibular canine,
maxillary canine incisor
Designed to hold or grasp food
Canines
Longest teeth in the human dentition
Canines
Designed to hold and grind food
Premolars
Designed to cut
Incisors
Lingual surface is shovel shaped to guide food into mouth
Incisors
What feature of the canines protects the jaw joint during side jaw
movements?
Length and thickness
What feature of the canines helps resist displacement?
Triangular in shape
Designed to chew or grind food
Molars
