TCDHA Orofacial Sem 1 Final
What are the 4 tooth tissues? - Answer- Enamel, dentin, cementum and dental pulp
Is pulp a soft tissue? - Answer- Yes
What is the hardest tissue in the human body? - Answer- Enamel
What gives enamel the ability to resist the wear the crown of a tooth is subje...
TCDHA Orofacial Sem 1 Final
What are the 4 tooth tissues? - Answer- Enamel, dentin, cementum and dental pulp
Is pulp a soft tissue? - Answer- Yes
What is the hardest tissue in the human body? - Answer- Enamel
What gives enamel the ability to resist the wear the crown of a tooth is subjected to?
- Answer- Dense mineralization
Which tooth tissue has a self cleaning ability? - Answer- Enamel
Which tooth tissue forms the main portion or body of the tooth? - Answer- Dentin
Which tooth tissue is underneath enamel and cementum? - Answer- Dentin
Which tooth tissue is made up of hard, dense, calcified tissue? - Answer- Dentin
Dentin is softer than enamel? - Answer- True
Dentin is harder than cementum and bone? - Answer- True
Which tooth tissue is yellow in colour and elastic in nature? - Answer- Dentin
What does secondary dentin do? - Answer- Adds to itself
When is reparative dentin laid down? - Answer- As a response to trauma
Which tooth tissue is a bone-like substance that covers the root? - Answer-
Cementum
Which tooth tissue protects and support the tooth? - Answer- Cementum
Which tooth tissues main function is to allow attachment of tooth to alveolar bone? -
Answer- Cementum
What are the 2 types of cementum? - Answer- Cellular and acellular
Where is cellular cementum located? - Answer- Apical 1/3 of root
Can cellular cementum reproduce itself? - Answer- Yes
Where is acellular cementum located? - Answer- Covers most of the anatomical root
What are the cells that produce cementum called? - Answer- Cementoblasts
, Where does the cementum get its nutrients? - Answer- From the outside of the tooth
(through blood vessels that come directly from the bone)
Where is the pulp housed? - Answer- Housed in the center of the tooth, with the
dentin surrounding the pulp tissue
What is the pulp? - Answer- A nourishing, sensory, dentin-reparative system of tooth
What is the pulp composed of? - Answer- 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? - Answer- Maxillary
canine, mandibular central incisor, mandibular canine, maxillary canine incisor
Designed to hold or grasp food - Answer- Canines
Longest teeth in the human dentition - Answer- Canines
Designed to hold and grind food - Answer- Premolars
Designed to cut - Answer- Incisors
Lingual surface is shovel shaped to guide food into mouth - Answer- Incisors
What feature of the canines protects the jaw joint during side jaw movements? -
Answer- Length and thickness
What feature of the canines helps resist displacement? - Answer- Triangular in
shape
Designed to chew or grind food - Answer- Molars
Cusps are designed to interlock the upper and lower teeth - Answer- Molars
What is a point angle? - Answer- A point at which 3 surfaces meet
The crowns of teeth form from growth centers called? - Answer- Lobes
Lobes grow and fuse together but a line remains on the erupted tooth where fusion
took place. What is the line called? - Answer- Developmental grooves
How many lobes do incisors have? - Answer- 3 facial, 1 lingual
How many lobes do canines have? - Answer- 3 facial, 1 lingual
How many lobes to premolars have? - Answer- 3 facial, 1 lingual
How many lobes do the maxillary 1st molars have? - Answer- 2 facial, 3 lingual
How many lobes do the mandibular 1st molars have? - Answer- 3 facial, 2 lingual
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