Pt1

Per arch, how many primary incisors are present?

4

How many primary molars are found in one arch?

4

How many primary canines are found in one arch?

2

List the functions of primary teeth

Mastication

Support for cheeks and lips

Clear speech

Space maintenance for eruption of permanent teeth

At what age is a child considered edentulous?

Birth to 6 months

At what age range does a child have only primary teeth?

6 months–2½ years & 2½-6 years

What age range represents mixed dentition?

6–12 years

At what age is adult dentition only in the mouth?

After 12 years

When do crowns of primary teeth begin to calcify?

4–6 months in utero

When does root formation for primary teeth begin?

After enamel on the crown is formed

What initiates occlusal movement of a developing tooth?

Start of root formation

What is the correct order of eruption for primary teeth?

Mand. centrals → Max. centrals → Max. laterals → Mand. laterals → 1st molars → Canines → 2nd molars

Which primary teeth are usually the last to erupt?

2nd molars

“leeway space”?

The space provided for the smaller permanent premolars due to the wider primary molars they replace

“primate space”?

Natural spacing between certain primary teeth

Primate spaces are commonly found:

M to maxillary canines and D to mandibular canines

Exfoliation occurs because of:

Root resorption

Root resorption usually begins at the:

Apex

Mixed dentition begins when which teeth erupt?

Permanent 1st mandibular molars

Mixed dentition typically ends around what age?

12 years

When do permanent tooth crowns begin to form?

At birth (1st molars)

Permanent crown completion occurs how long before eruption?

3–4 years

At what age does permanent crown formation continue until?

16 years

Permanent teeth that replace primary teeth are called:

Succedaneous teeth

What is the order of emergence for permanent teeth?

1^st molar, Mandibular central incisors, Maxillary central incisors, Mandibular lateral incisors, Maxillary lateral incisors