DEH 103: Dental Anatomy

Chapter 3: Primary and Mixed Dentition

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Kelsie Orndorff

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Primary denttion is also known as?

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Primary
Deciduous
Milk teeth
Baby teeth

What is the function of primary dentition?

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Masication
Support for lips and cheeks
Speech
Maintain arch space for secondary teeth

When does calcification of primary teeth begin?

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4-6 months in utero

When is the crown complete on primary teeth?

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Within the 1st year after birth

What is a general rule of thumb for determining if a child has the proper amount of teeth for their age?

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Take the child's age in months and subtract 4 this will tell you how many teeth the child should have at that age. (give or take 1-2 teeth)

This is the combined mesial/distal arch space of primary canines and molars that is greater then the permanent canines and premolar space. It is a difference in arch space.

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Leeway space

This is the spaces that occur on the mesial and distal of primary teeth that allow for adult teeth to erupt.

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Primate space

What is the order of permanent eruption?

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1st Molars
Mandibular Central Incisors
Other incisors
Mandibular Canine
Premolars **Maxillary 2nd before Mandibular 2nd only maxillary to proceed mandibular)
Maxillary Canines
2nd Molars
3rd Molars

True/False:

Primary crowns are tapered at the CEJ.
The enamel is less mineralized
They have smaller root canals
They have more anomalies than the permanent
The 2nd molars are larger than the 1st

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True
True
False: larger root canals
False: less anomalies
True

True/False:

When a primary incisor erupts there are no mamelons.

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True

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