Dental Eruption

Question 1

Physical process associated with growth in which the tooth moves from its original position either in the maxilla or mandible to its final position in the oral cavity

Answer 1

Dental eruption

Question 2

Eruption is the result of a multifactorial phenomenon:

Answer 2

• root development
• alveolar bone growth
• eruption secuencie

Question 3

Dental organs vary in size, shape and location
It functions are:

Answer 3

Chewing
Phonation
Gives shape and structure to the face

Question 4

3 phases of tooth eruption

Answer 4

1. Pre eruption
2. Pre functional
3. Functional

Question 5

Take place inside the bone and there is only a lateral displacement from the point of origin of the dental lamina towards the covering gum

(PHASE)

Answer 5

1) pre eruption phase

Question 6

What happen in the pre eruption phase

???

Answer 6

differentiated area in bone tissue
calcification of the crown
fully outlined crown

Question 7

this cord has connective tissue and remains of the dental lamina that cross the bone during the eruption of the tooth
many osteoclasts appear here that will enlarge this canal for the passage of the tooth

Answer 7

Gubernacular cord

Question 8

It begins when 50-75% of the tooth root is formed
there is an intense vertical displacement which allows the tooth to move towards the mucosa

phase

Answer 8

Pre functional phase

Question 9

This phase begins at the moment the tooth makes contact with the antagonist and begins to perform the chewing function

the duration of this phase is the entire life of the tooth, since the chewing functionality produces abrasion on the occlusal surfaces and contact points between the teeth

Answer 9

Functional phase

Question 10

Factors that affect tooth eruption process (4)

Answer 10

-craniofacial growth and development process
-hereditary
-genetic control of the growth peak and sequence of dental development
-calcification pattern

Question 11

NOLLA’s table

Answer 11

0 absscente of the crypt
1 presence of the crypt
2 initial calcification
3 1/3 of the crown complete
4 two thirds of the crown complete
5 crown almost complete
6 complete crown SITU mov

7 1/3 of the root axial mov
8 2/3 of the root rizoclasia

9 root almost completed apex open
10 completed root and apex

Question 12

Chronology of the dental development in permanent dentition

Answer 12

?

Question 13

Variations in the eruption chronology can affect…

Answer 13

• alterations that affect the normal process of odontologenesis
• Depending on the stage in which they occur the deciduous teeth the permanent teeth or both may be compromised
• Depending on the stage and altered genes the number, size, shape, structure and color of some or all of the teeth may be affected

Question 14

Dental anomalies of number:

Answer 14

• supernumerary teeth or hyperdontia (>3) +
• congenital abstenles or hypodontia (>3) -

° causes malocclusion and dental alignment alterations

Question 15

Dental anomalies represent a negative factor for development of occlusion producing:8

Answer 15

• delay in the normal eruption of teeth
• ectopic eruption of adjacent teeth
• changes in the dental midline
• transpositions
• rotations
• abnormal spacing
• decrease in arc length
• agenesis

Question 16

Is the absence of one or more dental organs and is a common development anomaly in both dentitions (deciduous and permanent) it is the result of a disorder of the dental lamina which prevents the formations of the tooth germ. The absence is often bilateral

Answer 16

Agenesis

Question 17

Most frequent agenesis

Answer 17

third molars
upper lateral incisors
lower second premolar

Question 18

is an alteration in the eruptive trajectory of the dental organ leading to its impaction against the adjacent tooth. Are found displaced from their normal anatomical location. can lead to malocclusion

Answer 18

Ectopic eruption

Question 19

Most common ectopic eruption

Answer 19

1molars
permanent canines
Lower canine
lower second premolar
Upper lateral incisors

Question 20

the change in the position of two adjacent teeth relative to their roots in the same quadrant of the dental arch which can lead to an inverted eruption position and alter the normal sequence of eruption. They are generally unilateral, and more frequently occur in the upper arch.

Answer 20

Transposition

Question 21

despite having been fully formed they have not emerged in the mouth during the usual period, and they can remain partially or completly inside the jaw bone

Answer 21

Impacted teeth

Question 22

Common impacted teeth

Answer 22

• lower third molars
• upper canines

Question 23

Causes of this anomalies

Answer 23

• systemic factors
• genetic factors
• environmental factors

Question 24

Systemic factors

Answer 24

formation abnormalities may be due to systemic alterations that begin in childhood or early adolescence

tooth abnormalities caused by systemic diseases include: alterations in the number, structure of enamel, dentin and cementum and in some case variations in the tooth size

Question 25

Genetic factors

Answer 25

appearance of skeletal development disorders due to hereditary factors in some cases manifests at birth and in others they develop during childhood or adolescence
ej. Klinefilter, down s, taurodontism can occur

Question 26

Environmental factors

Answer 26

Local cause like: specific blow, such as trauma during tooth development or it may be of idiopathic etiology