DEVELOPMENT AND ERUPTION

Question 1

Its origin of word came from the latin word “eruptione” which means output with momentum. It is a developmental process whereby a tooth moves from its developmental position in the jaw into its functional position in the mouth.

Answer 1

Eruption

Question 2

Its origin of word came from the latin word “emergere” and french word “emerger” which means “to come forth into view”. This is the momentary stage of cutting through the overlying gingival mucosa.

Answer 2

Emergence

Question 3

This begins to form at about 14 weeks in utero & completed postnatally about 3 years of age; and begins to emerge at the mean age of 6 months, and the last emerge at a mean age of 28 +- 4 months.

Answer 3

Primary dentition/Deciduous dentition

Question 4

This begins to erupt at a mean age of 6yo; and marks the transition or mixed dentition period

Answer 4

Permanent dentition

Question 5

This is the permanent teeth that replaces the
deciduous teeth in the dental arc (Central Incisors, Lateral Incisors, Canines, Premolars)

Answer 5

Succedaneous teeth

Question 6

They do not have predecessors, and they do not succeed or replace deciduous teeth. (Maxillary and Mandibular 1St, 2nd, and 3rd molars)

Answer 6

Non-succedaneous teeth

Question 7

The first indication of tooth formation occurs as early as the sixth week of prenatal life; Jaws are small compared with the large brain case and orbits; Lower face height is smaller with the neurocranium; Mandibular arch > Maxillary arch; All stages of tooth formation fill both jaws

Answer 7

Prenatal/Perinatal/Postnatal Development

Question 8

SEQUENCE OF EMERGENCE OF PRIMARY
TEETH

Answer 8

A B D C E

Question 9

Sequence of eruption of permanent teeth in maxillary

Answer 9

6, 1, 2, 4, 5, 3, 7, 8

Question 10

Sequence of eruption of permanent teeth in mandibular

Answer 10

6, 1, 2, , 3, 4, 5, 7, 8

Question 11

This is the first transition dentition begins with the emergence and eruption of the permanent mandibular first molars and ends with the loss of the last primary tooth.

Answer 11

Mixed dentition

Question 12

IMPORTANT TIMES FOR TOOTH ERUPTION:

From birth to 6 months old (approximately):
There are no teeth visible within the mouth

Answer 12

No teeth (edentulous)

Question 13

IMPORTANT TIMES FOR TOOTH ERUPTION:

All primary teeth are erupting into the child’s mouth over this period.

Answer 13

Primary dentition:
6 MONTHS TO 2 YEARS OLD (APPROXIMATELY)

Question 14

IMPORTANT TIMES FOR TOOTH ERUPTION:

All 20 primary teeth are present; no permanent teeth are yet visible in the mouth.

Answer 14

Primary dentition:
2 to 6 years old (approximately)

Question 15

IMPORTANT TIMES FOR TOOTH ERUPTION:

Permanent teeth start to appear, beginning with the first molars (also called 6-year molars). These are followed closely by the loss of the primary mandibular central incisors.

Answer 15

Mixed dentition:
6 YEARS OLD (APPROXIMATELY)

Question 16

IMPORTANT TIMES FOR TOOTH ERUPTION:

All eight permanent incisors replace primary incisors that are exfoliated (shed).

Answer 16

Mixed dentition:
6 TO 9 YEARS OLD

Question 17

IMPORTANT TIMES FOR TOOTH ERUPTION:

All four permanent canines and eight premolars replace primary canines and molars.

Answer 17

Mixed dentition:
9 TO 12 YEARS OLD:

Question 18

IMPORTANT TIMES FOR TOOTH ERUPTION:

Second molars (also called 12-year molars) emerge distal to the permanent first molars

Answer 18

Mixed dentition:
12 YEARS OLD

Question 19

IMPORTANT TIMES FOR TOOTH ERUPTION:

After 12 years (second) Molars erupt, 28 permanent teeth are present, and all primary teeth have been exfoliated and replaced.

Answer 19

Permanent dentition only

Question 20

IMPORTANT TIMES FOR TOOTH ERUPTION:

Third molars (if present) emerge.

Answer 20

Permanent dentition:
17 TO 21 YEARS OLD

Question 21

What is the nolla’s stage of calcification?

Answer 21

STAGE 0 ABSENCE OF CRYPT
STAGE 1 PRESENCE OF CRYPT
STAGE 2 INITIAL CALCIFICATION
STAGE 3 1/3 CROWN FORMATION
STAGE 4 2/3 CROWN FORMATION
STAGE 5 CROWN ALMOST COMPLETED
STAGE 6 CROWN COMPLETED
STAGE 7 1/3 ROOT FORMATION
STAGE 8 2/3 ROOT FORMATION
STAGE 9 ROOT ALMOST COMPLETED
STAGE 10 ROOT COMPLETED

Question 22

This may lead to the lack of space for the permanent dentition; they are in use and contributing to the health and well-being of the individual during the first years of greatest development, physically and mentally.

Answer 22

Loss of primary teeth

Question 23

What are the factors in the initiation and development of an abnormal occlusion?

Answer 23

Premature loss of primary teeth, retention of primary teeth, congenital absence of teeth, dental anomalies, and insufficient space

Question 24

This consists of 32 teeth is completed from 18 to 25 years of age if the third molar is included.

Answer 24

Permanent dentition

Question 25

When people live ___ years of their age, they spent __% of their life chewing only with their primary teeth.

Answer 25

70 years, 6%

Question 26

Primary teeth are needed for efficient _____ of food.

Answer 26

Chewing/Mastication

Question 27

This provide support for the cheeks and lips maintaining a normal facial appearance and smile; and is necessary for the formulation of clear speech; they are also critical for maintaining the space that is required to provide room for the eruption of permanent teeth.

Answer 27

Primary teeth

Question 28

CROWN AND ROOT DEVELOPMENT:
Tooth crowns are forming from lobes and are calcifying within the jawbones.

Answer 28

Prior to eruption

Question 29

CROWN AND ROOT DEVELOPMENT:
The root starts to form and the tooth moves through bone toward the surface (eruption process)

Answer 29

After crown calcification is completed

Question 30

CROWN AND ROOT DEVELOPMENT: This is through the oral mucosa into the oral cavity

Answer 30

Eruption or emergence

Question 31

CROWN AND ROOT DEVELOPMENT: The root continues to form until root formation is
completed

Answer 31

After eruption

Question 32

PRIMARY VS. PERMANENT: The roots of primary anterior teeth are?

Answer 32

Narrower and longer comparatively

Question 33

PRIMARY VS. PERMANENT: The roots of primary molars accordingly are?

Answer 33

Longer, slenderer, and flares more

Question 34

PRIMARY VS. PERMANENT: The cervical ridge of enamel of the anterior teeth are?

Answer 34

More prominent

Question 35

PRIMARY VS. PERMANENT: The crowns of primary molars at their ______ portions are ________

Answer 35

Cervical, slenderer mesiodistally

Question 36

PRIMARY VS. PERMANENT: The _________, on the primary molars are much more _____ especially on the maxillary and mandibular first molars.

Answer 36

Cervical ridges buccally, pronounced

Question 37

PRIMARY VS. PERMANENT: The buccal lingual surface of primary molars are ____ above the cervical curvatures that those of permanent molars.

Answer 37

Flatter

Question 38

PRIMARY VS. PERMANENT: The primary teeth are usually less ________ in appearance than the permanent teeth.

Answer 38

Pigmented and are whiter

Question 39

PULP CHAMBERS AND PULP CANALS: The ______ in all directions are ____ compared with root trunks and crevices.

Answer 39

Crown widths; large

Question 40

PULP CHAMBERS AND PULP CANALS: The enamel is relatively ___ and has a consistent depth.

Answer 40

Thin

Question 41

PULP CHAMBERS AND PULP CANALS: The _______ between the pulp chambers and the enamel is limited, particularly in some areas (lower second primary molars).

Answer 41

Dentin thickness

Question 42

PULP CHAMBERS AND PULP CANALS: The pulp horns are high and the _________.

Answer 42

Pulp chambers are large

Question 43

PULP CHAMBERS AND PULP CANALS: The primary roots are ____ compared with crown width and length.

Answer 43

Narrow and long

Question 44

PULP CHAMBERS AND PULP CANALS: The ______ of primary teeth flare markedly and thin out rapidly as the apices are approached.

Answer 44

Molar roots

Question 45

ARCH TRAITS THAT DISTINGUISH PRIMARY MAXILLARY FROM MANDIBULAR TEETH:

This has short, wide, and symmetrical crown.

Answer 45

Maxillary central incisor