110: Ch.18 Primary dentition

Mineralization of the first primary teeth begins in utero at ______ - ______ weeks

13-16

Universal Numbering System by the capital letters A through

T

Eruption of the Primary Maxillary Central incisor: ______________ months

10 (8-12)

Shedding of the Maxillary Primary Central Incisors: ______ years

6-7

Eruption of the Primary Maxillary Lateral Incisors: mean (range) months

11 (9-13)

The __________________ Primary ______________ ____________ erupts 16 (13-19 months for males; 14-19 months for females)

Maxillary First Molars

When do the primary maxillary canines erupt? mean and (range) in months

19 (16-22)

When do the primary maxillary lateral incisors shed? (years)

7-8

When do the Primary Maxillary Canines erupt? (range in months)

16-22

When do the primary maxillary canines shed? (years)

10-12

When do the primary maxillary first molars shed? (years)

9-11

Which of the following primary teeth DO NOT shed between 10-12 years?

Primary mandibular first molars

When do the Primary Maxillary Second Molars typically erupt? (months)

29 (25-33)

When are the primary maxillary second molars shed? (years)

10-12

When do primary mandibular central incisors typically erupt? (months)

8 (6-10)

When do the primary mandibular lateral incisors typically erupt? (months)

13 (10-16)

When do the primary mandibular canines typically erupt? (mean) in months

20

What is the range (in months) that primary mandibular canines typically erupt?

17-23

What is the mean and range (in months) that mandibular canines typically erupt?

20 (17-23)

When do primary mandibular first molars erupt? (months)

16 (14-18)

When do primary mandibular second molars erupt for MALES? (months)

27 (23-31)

When do primary maxillary first premolars erupt?

none of these

Which of the following teeth erupt LAST???

Primary Dentitioj

Mandibular Canines

The primary dentition takes between __ and __ years to be completed

2-3

When do the primary mandibular canines shed?

________________ years

9-12

Both the primary mandibular and maxillary central incisors are shed between ____________ years.

6-7

The primary mandibular first molars and primary maxillary molars both are expected to shed between ___________ years of age.

9-11

Maxillary primary first molars typically erupt in females first.

false

When do primary mandibular second molars erupt in females?

(RANGE in months)

24-30

A ___-month delay or acceleration is considered usual for an individual child.

6

Young males tend to shed their primary dentition and have the permanent dentition slightly earlier

false

largest spaces are considered developmental _____________ spaces, mostly involving spaces between the primary maxillary lateral incisor and canine and also between the primary mandibular canine and first molar

primate

A distinct bulging cervical ridge is present on both the ___________ and ____________ cervical third surfaces of primary teeth, more than any similar structure on the even larger permanent molars

facial, lingual

In general, the root of a primary tooth is completely formed in just about ___ year(s) after eruption of that tooth into the oral cavity.

1

Each crown-to-root ratio of primary teeth is ____________ than those ratios of their permanent dentition counterparts.

smaller

Overall, the dentin of the primary dentition is ________ than that of the permanent counterparts.

thinner

dentin thickness between the pulp chambers and the enamel can be greater especially in the

primary mandibular second molar

The child patient and supervising adults sometimes do not understand the importance of the primary dentition because they believe the teeth to be only temporary and soon replaced. Thus the primary dentition generally functions in esthetics, mastication, and speech for a child for only _______-_______ years. However, these primary teeth also serve the important function of holding open the eruption arch space for the succedaneous permanent teeth replacing them.

5-12

Because the enamel and dentin are _____________, the risk of endodontic complications is greater for the primary dentition

thinner

Prolonged nighttime use of a baby bottle with a caries-causing beverage or sugar-coated pacifier must also be considered as an etiologic factor in a child patient with extensive acute caries of the primary dentition.

This condition is considered:

early childhood caries

what type of caries is this shown in the picture

early childhood caries

A child's first dental appointment should occur within _____ months of the eruption of the first primary tooth

6

Both primary incisors resemble their permanent successor with some exceptions, such as a distinct bulging cervical ridge present on both the labial and lingual surfaces. Also both have the same arch position, function, and general shape as the permanent counterpart, functioning as such for about ___ years.

5

Which letters represent the Primary Maxillary Central Incisors?

E & F

what tooth is shown?

Primary Maxillary Right Lateral Incisor (E)

Which tooth is shown?

Primary Maxillary Right Lateral Incisor

what tooth is this

Primary Mandibular Right Central Incisor (P)

Primary Teeth

pick the correct answer from the following:

(Q) mandibular right lateral incisor

which PRIMARY tooth is this?

(C) Right Maxillary Canine

which primary tooth is this?

(R) Right Mandibular Canine

pick the correct tooth from the following:

(B) Primary Maxillary First Right Molar

Which tooth is shown?

Primary Maxillary Right Second Molar (A)

.

Primary Mandibular Right First Molar (S)

...

Primary Mandibular Right Second Molar

the crown of the primary _____________________ has a relatively longer and sharper cusp than that of its permanent successor when first erupted. The mesial and distal outlines of the primary ______________________________ are both rounder in shape, however, and greatly overhang the cervical line. The mesial cusp slope is longer than the distal cusp slope on this tooth

maxillary canine

lingual surface is smoother

shallower lingual fossa

root is long, narrow, and almost twice the length of the crown

incisal ridge is straight and is centered over the crown labiolingually

What tooth is being described?

mandibular canine

The crown of the primary _____________________________ does not resemble any other crown of either dentition.

From the buccal aspect, both the mesial and distal outlines are rounded and constricted at the CEJ.

The height of contour on the buccal is at the cervical third and for the lingual at the middle third.

maxillary first molar

___________________ has an H-shaped groove pattern and three fossae: central, mesial triangular, and distal triangular.

maxillary first molar

This tooth most closely resembles the form of the permanent maxillary first molar but is smaller in all dimensions.

primary maxillary second molar

This tooth most closely resembles the form of the permanent mandibular first molar.

primary mandibular second molar

The greater root spread of primary molars, along with their narrow shape and lack of root trunk, makes primary molars susceptible to

fracture during extraction

a loose primary tooth may tighten again

true

what age would you estimate to be the dental age of a child with the following teeth:

- ALL primary maxillary incisors, canines

- permanent mandibular incisors and 1st molars

5-7 years

Which one tooth is adjacent and distal to the primary maxillary second molar of a 7 y/o child?

permanent max 1st molar

Which primary tooth has a crown that DOES NOT resemble any other tooth of either dentitions?

mandibular first molar

The actual dates of eruption are not as important as the eruption sequence.

A radiograph should be taken if teeth erupt asymmetrically.

Both statements are true

Primary teeth are erupted by what age?

33 months

NONE of the primary first molars resemble any other tooth in either dentition

true

Primary Maxillary First Molars

B & I

which primary molar has a cusp of carabelli?

max 2nd

what tooth replaces primary molars?

permanent premolars

The crown of each primary ______ molar in BOTH arches resembles the first molars of permanent dentition

2nd

The primary maxillary first molars have a "___"-shaped groove pattern

H

What would you estimate to be the dental age of a child with the following teeth: ALL primary maxillary incisors, canines, and molars; permanent mandibular incisors and first molars

5-7 years

Which one tooth is adjacent and distal to the primary maxillary second molar in a 7-year-old child?

Permanent maxillary first molar

Which primary tooth has a crown that does not resemble any other tooth of other dentitions?

Mandibular first molar

The dates of eruption are not as important as the eruption sequence.

A radiograph should be taken if teeth erupt asymmetrically.

Both statements are true.

The root is twice as long as the crown and more slender than that of its permanent tooth

Primary maxillary canines (C & H)

The root is long, narrow, and almost twice as long as the crown.

This tooth also has a shallow lingual fossa

Primary Mandibular Canines (M&R)

These primary teeth are the only anterior teeth of either dentition where the crown appears wider MD than IC, the opposite of their permanents

Maxillary Central Incisors

Primary maxillary central incisors have no lingual pits

true

This tooth is the exact opposite of the maxillary central incisor because it is:

smaller and is longer IC than MD

The apex is ______ on the primary maxillary lateral incisor

sharper