Primary Teeth And Anatomy Of Skull

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| By Jlgarner1121

Jlgarner1121

Community Contributor

Quizzes Created: 2 | Total Attempts: 2,032

Questions: 11 | Attempts: 163 | Updated: Mar 20, 2023

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Questions and Answers

1.

Calcification of primary teeth begins in utero at...
- A.
  
  20 to 25 weeks
- B.
  
  10 to 15 weeks
- C.
  
  13 to 16 weeks
- D.
  
  5 to 7 weeks
Correct Answer
C. 13 to 16 weeks

Explanation
Calcification of primary teeth refers to the process of tooth development where the hard tissue of the tooth, known as dentin, begins to form. This process starts in utero, during pregnancy. The correct answer, 13 to 16 weeks, indicates that calcification of primary teeth begins around the 13th to 16th week of pregnancy. At this stage, the tooth buds are forming and the initial stages of dentin formation are taking place. This is an important milestone in dental development as it sets the foundation for the future eruption of primary teeth.

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2.

The first primary tooth to erupt is the...
- A.
  
  Mandibular canines
- B.
  
  Maxillary centrals
- C.
  
  Mandibular centrals
- D.
  
  Mandibular laterals
Correct Answer
C. Mandibular centrals

Explanation
The mandibular centrals are the first primary teeth to erupt. This means that they are the first set of front teeth to appear in the lower jaw of a child.

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3.

The primary dentition takes how long to be completed?
- A.
  
  4 to 5 years
- B.
  
  2 to 3 years
- C.
  
  1 to 2 years
- D.
  
  5 to 6 years
Correct Answer
B. 2 to 3 years

Explanation
The primary dentition, also known as baby teeth, takes approximately 2 to 3 years to be completed. During this time, all 20 primary teeth erupt in the mouth. This process usually begins around 6 months of age and is typically completed by the age of 3. Once the primary dentition is complete, these baby teeth will eventually be replaced by permanent teeth as the child grows.

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4.

The enamel and dentin are relatively ___________ than the permanent teeth.

Correct Answer
thinner

Explanation
The enamel and dentin of the permanent teeth are thinner compared to the primary teeth.

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4
5.

Interproximal spaces between the primary teeth are considered normal because...
- A.
  
  Space is necessary for the proper alignment of the future permanent teeth.
- B.
  
  It's easier to floss
- C.
  
  The primary teeth are smaller
- D.
  
  Less cavities form since the toothbrush reaches all surfaces of the teeth.
Correct Answer
A. Space is necessary for the proper alignment of the future permanent teeth.

Explanation
Interproximal spaces between the primary teeth are considered normal because space is necessary for the proper alignment of the future permanent teeth. As the primary teeth gradually fall out and are replaced by permanent teeth, the interproximal spaces allow room for the larger permanent teeth to emerge in the correct position. This helps ensure that the permanent teeth align properly and reduces the likelihood of crowding or misalignment issues.

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6.

The primary tooth crowns are more_____________ at the CEJ, which makes them appear bulbous.

Correct Answer
narrower

Explanation
The primary tooth crowns are narrower at the CEJ, which means that they have a smaller width compared to the rest of the tooth. This narrower shape at the cervical enamel junction (CEJ) gives the appearance of a bulbous shape, as the crown appears wider and more rounded towards the top.

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4
7.

The interproximal spaces are called ____________ spaces.

Correct Answer
primate

Explanation
The interproximal spaces are referred to as "primate" spaces.

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4

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Current Version
Mar 20, 2023

Quiz Edited by
ProProfs Editorial Team
Sep 24, 2012

Quiz Created by
Jlgarner1121

Primary Teeth And Anatomy Of Skull

Calcification of primary teeth begins in utero at...

The first primary tooth to erupt is the...

The primary dentition takes how long to be completed?

The enamel and dentin are relatively ___________ than the permanent teeth.

Interproximal spaces between the primary teeth are considered normal because...

The primary tooth crowns are more_____________ at the CEJ, which makes them appear bulbous.

The interproximal spaces are called ____________ spaces.