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Questions and Answers
What is the state of the deciduous teeth at birth?
What is the state of the deciduous teeth at birth?
At 6 months old, what is the state of the permanent teeth?
At 6 months old, what is the state of the permanent teeth?
At 3 years old, what is the state of the deciduous teeth?
At 3 years old, what is the state of the deciduous teeth?
At 6 years old, what is the state of the permanent teeth?
At 6 years old, what is the state of the permanent teeth?
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At 9 years old, what is the state of the deciduous teeth?
At 9 years old, what is the state of the deciduous teeth?
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At birth, what is the state of the permanent teeth?
At birth, what is the state of the permanent teeth?
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At 6 months old, what is the state of the deciduous teeth?
At 6 months old, what is the state of the deciduous teeth?
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At 3 years old, what is the state of the permanent teeth?
At 3 years old, what is the state of the permanent teeth?
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At 6 years old, what is the state of the deciduous teeth?
At 6 years old, what is the state of the deciduous teeth?
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Study Notes
Dentition at Birth
- Deciduous teeth: half crown of lower is formed
- Deciduous teeth: cusp tip of lower is formed
- Permanent teeth: mesiolingual cusp tip of lower 6 is formed
Dentition at 6 Months
- Deciduous teeth: lower A is erupted and 1/3 of root is formed
- Deciduous teeth: lower B is not erupted and less than 1/3 of root is formed
- Deciduous teeth: more parts of lower C, D, and E are formed
- Permanent teeth: incisal thirds of 1 and 2 are formed
- Permanent teeth: cusp tip of lower 3 is formed
- Permanent teeth: occlusal 1/3 of lower 6 is formed
Dentition at 3 Years
- Deciduous teeth: all are formed with their roots
- Permanent teeth: crowns of lower 1 and 2 are not completed yet
- Permanent teeth: half crown of lower canine is formed
- Permanent teeth: parts of lower 4 and 5 are formed
- Permanent teeth: crown of lower 6 is completed
- Permanent teeth: occlusal 1/3 of lower 7 is formed
Dentition at 6 Years
- Deciduous teeth: lower A may be shedded and replaced, lower 1
- Deciduous teeth: B, C, and D show different amounts of root resorption
- Deciduous teeth: E starts root resorption at 7 years old
- Permanent teeth: lower 1 is erupted with 1/3 root is formed
- Permanent teeth: lower 2 is not erupted with less than 1/3 root is formed
- Permanent teeth: crowns of lower 3, 4, and 5 may be completed
- Permanent teeth: lower 6 is erupted with 1/3 of root is formed
- Permanent teeth: crown of lower 7 is not completed yet
Dentition at 9 Years
- Deciduous teeth: all primary teeth are shedded except second molar E
- Permanent teeth: lower 1 is erupted with full root
- Permanent teeth: lower 2 is erupted without full root
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Description
This quiz tests your understanding of the development of dentition at various stages of life, from birth to 6 months old. Questions cover the eruption and formation of deciduous and permanent teeth. Evaluate your knowledge of dental development and growth.
