✨Chapter 6 primary and mixed dentition

What would you estimate is the dental age of a child if the only secondary (adult) teeth present were #3, 14, 19, 24, 25, and 30?

7 to 8 years

Using the Universal number or letter, which tooth erupts just distal to primary tooth J?

Tooth #14

The permanent maxillary canine erupts at age:

11 to 12 years

The 20 secondary teeth that succeed their primary tooth predecessors are called

succedaneous

Which of the following teeth (if any) replaces primary tooth J?

13

In the normal dentition, humans have how many nonsuccedaneous teeth?

12

The mandibular lateral incisor erupts at age

7 to 8

Which of the following is NOT a characteristic of primary (deciduous) teeth?

Primary molars have sharper cusps and more prominent grooves than permanent teeth.

What tooth will replace primary tooth B?

5

The crowns of all 20 primary teeth begin to calcify between ______ months in utero.

4-6

What secondary tooth replaces primary R?

. 27

The permanent mandibular canine erupts at age:

9 to 10 years

Primary posterior teeth, particularly the first molars, have a pronounced elevation of enamel found on the mesial half of the buccal surface which is called the

Cervical Ridge

Primary molar teeth have very little or no root trunk (the pulp chambers are mostly in the tooth crown). Care must be taken when preparing primary teeth for restorations to avoid cutting into (exposing) the pulp horns during cavity preparation.

Both sentences are true

The eruption sequence of the primary teeth is central incisor, lateral incisor, canine, first molar, and second molar.

false

The permanent mandibular lateral incisor erupts at age:

7 to 8 years

What permanent tooth erupts into the space previously held by the primary second molar?

second premolar

The period of a child's life between 6 months to 2 years old (approximately) represents which of the following conditions:

primary dentition only

Which of the following permanent teeth should have erupted long before the patient is 12 years old?

Maxillary lateral incisor

what do we call the gradual dissolving away of a root due to the underlying eruption of a succedaneous tooth that will replace it?

resorption

The roots of a primary maxillary second molar are flared to allow space for the developing tooth bud of which permanent maxillary tooth?

Second premolar

which of the following permanent teeth should have erupted long before the patient is 12 years old?

Maxillary lateral incisor

Using the Universal System for assigning letters, what letter represents the mandibular right lateral incisor?

q

Primary teeth have very pronounced mamelons.

False

On the primary maxillary first molar, the number and formation of the roots closely correspond to the roots of the:

Permanent maxillary first molar