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Questions and Answers
What is the total number of primary teeth in human dentition?
What is the total number of primary teeth in human dentition?
- 16
- 32
- 28
- 20 (correct)
At what mean age do primary teeth typically begin to emerge?
At what mean age do primary teeth typically begin to emerge?
- 3 years
- 6 months (correct)
- 1 year
- 6 years
Which of the following types of teeth are not present in primary dentition?
Which of the following types of teeth are not present in primary dentition?
- Molars
- Incisors
- Premolars (correct)
- Canines
What is the average age at which secondary teeth are fully formed, including roots?
What is the average age at which secondary teeth are fully formed, including roots?
What is the primary function of incisors in dental anatomy?
What is the primary function of incisors in dental anatomy?
Which teeth are completed at the latest age, between 18 to 25 years?
Which teeth are completed at the latest age, between 18 to 25 years?
Which dental formula letter represents molars?
Which dental formula letter represents molars?
What age range typically corresponds to full permanent dentition?
What age range typically corresponds to full permanent dentition?
What type of teeth are referred to as 'corner stones' in dental terminology?
What type of teeth are referred to as 'corner stones' in dental terminology?
Which of the following describes the shape and function of premolars?
Which of the following describes the shape and function of premolars?
What classification trait pertains specifically to the type of tooth within a class?
What classification trait pertains specifically to the type of tooth within a class?
Which of the following terms is used to describe the embedded part of the tooth in the jawbone?
Which of the following terms is used to describe the embedded part of the tooth in the jawbone?
In terms of the dental nomenclature, what does 'UL' refer to?
In terms of the dental nomenclature, what does 'UL' refer to?
Which of the following describes the white layer that appears when you look at your teeth?
Which of the following describes the white layer that appears when you look at your teeth?
Which type of teeth has a total count of 3 in the lower jaw?
Which type of teeth has a total count of 3 in the lower jaw?
How many deciduous teeth are present in one side of the upper and lower jaw?
How many deciduous teeth are present in one side of the upper and lower jaw?
The term 'deciduous' in the context of teeth refers to which type of set trait?
The term 'deciduous' in the context of teeth refers to which type of set trait?
What is the total number of permanent teeth on one side of the upper jaw?
What is the total number of permanent teeth on one side of the upper jaw?
What part of the anatomical root is known as the clinical root?
What part of the anatomical root is known as the clinical root?
If a dental formula is represented as I2/2 C1/1 PM2/2 M3/3, what does it refer to?
If a dental formula is represented as I2/2 C1/1 PM2/2 M3/3, what does it refer to?
What is the combined total of teeth in one side of the upper and lower jaw for permanent teeth?
What is the combined total of teeth in one side of the upper and lower jaw for permanent teeth?
In patients with advanced bone loss, how might the clinical root be affected?
In patients with advanced bone loss, how might the clinical root be affected?
Why is the clinical root not visible clinically?
Why is the clinical root not visible clinically?
Which statement best describes the anatomical root?
Which statement best describes the anatomical root?
Which of the following is NOT true regarding the clinical root?
Which of the following is NOT true regarding the clinical root?
Study Notes
Human Dentition
- Humans have two sets of teeth, diphyodont.
- Primary/Deciduous/Baby/Milk teeth
- 20 teeth total: Incisors, Canines, Molars
- Smaller in size
- Start forming prenatally, complete postnatally by age 3
- Appear in the oral cavity at 6 months, last tooth emerges at 28-4 months
- Secondary/Permanent/Succedanous teeth
- 32 teeth total
- Incisors, Canines, Premolars, Molars
- Larger in size
- Appear in the oral cavity at 6 years old
- Completed (including roots) at 14-15 years old except 3rd molars (18-25 years old)
Dental Formula
- A way to write the number and types of teeth in the jaws
- Deciduous teeth:
- DI2/2 DC1/1 DM2/2 = 10
- Permanent teeth:
- I2/2 C1/1 PM2/2 M3/3 = 16
- Note:* This represents one side of the jaw, multiply to get the total count
Nomenclature
- System of names to classify teeth
- Set trait
- Deciduous or Permanent
- Arch trait
- Maxillary or Mandibular
- Class trait
- Incisor, Canine, Premolar, Molar
- Type trait
- Central or Lateral (incisors)
- First, Second, Third (molars)
- Side
- Right or Left
- Quadrant:
- UR (Upper Right)
- UL (Upper Left)
- LR (Lower Right)
- LL (Lower Left)
- Crown: The visible portion of the tooth
- Root: The portion embedded in the jawbone
- CEJ (Cementoenamel junction): The cervical line that separates crown from root
Full Permanent Dentition
- Achieved at 18-25 years (when the 3rd molars develop)
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Description
This quiz covers the basics of human dentition, including the two sets of teeth: primary (deciduous) and secondary (permanent). It also explores the dental formula and nomenclature used to classify teeth. Test your knowledge on the types, number, and characteristics of human teeth.
