Development of Teeth Flashcards
What is the process by which the tissues of the developing tooth become hardened by the deposits of calcium salts?
calcification or mineralization
What is the understanding and memorizing key sections of the primary and permanent tooth timetables?
chronology
What is emergence?
precise stage of tooth development as it first appears or emerges through the gingiva
What is eruption?
continuous and dynamic movement of the tooth as it develops from its initial calcification stage until it reaches occlusal contact with a tooth in the opposing arch
What is the process of completed calcification of a tooth whereby the apical foramen has anatomically closed?
root completion
What is it called when you lose a tooth from the oral cavity?
exfoliation
When does calcification of primary teeth begin? end?
begin: 13 to 16 weeks in utero
end: 18-20 weeks in utero
What is the sequence of primary teeth evidence of calcification?
central incisor 1st molar lateral incisor canine 2nd molar
What is the last tooth to begin calcification? when does it begin?
maxillary 2nd molar at 19 weeks in utero
When does first evidence of calcification occur?
20 weeks in utero
What is the last primary tooth to erupt? When does it erupt?
maxillary 2nd molar (A, J) at age 29 month
what is the first primary tooth to erupt? When does it erupt?
P, O at 8 months of age
How many centers of calcification do primary teeth emerge from?
1
Are there developmental depressions on the primary anterior teeth?
no
What is the dental follicle?
sac-like structure that contains the developing tooth within the osseous structure of the jaws
What orientation are permanent dental follicles to primary anterior teeth?
lingual
What orientation of permanent dental follicles to primary molars?
within the bifurcation/trifurcations of the primary molar roots
Developing follicles of permanent molar are located where in comparison to the primary molar teeth?
distal/posterior
First permanent tooth to erupt?
1st molars
What teeth begin calcification between 2 - 4 years of age?
premolar and second molars
When do 3rd molars begin calcification?
around 9 years of age
From birth to age 1 year of age which permanent teeth begin calcification?
first molar, central incisor, canine, lateral incisor
What is the first primary tooth to erupt and at what age?
Mandibular central incisor, 8 months after birth
When do permanent teeth begin their eruptive movements?
after the crown is formed
What is the first primary tooth to be completed and at what age?
maxillary central incisor at 1.5 months after birth
What is the last primary tooth to begin calcification and at what age?
Maxillary second molar, 19 weeks in utero
When does calcification commence in utero?
13-16 weeks
The follicle position of developing permanent anterior teeth are located ____ to the primary tooth roots
lingual
The human permanent dentition is said to be complete at approximately age:
21
The permanent maxillary canine exhibits crown completion before the permanent mandibular canine. The permanent mandibular first premolar exhibits crown completion after the permanent maxillary first premolar
A. Both statements false
B. First statement true; second statement false
C. First statement false; second statement true
D. Both statements true
A. Both statements are false
The pulp chamber is large with newly erupted teeth, but becomes smaller as the tooth ages. The main function of the pulp is to form the dentin
A. Both statements false
B. First statement true; second statement false
C. First statement false; second statement true
D. Both statements true
D. Both statements are true
Which tooth groups in the permanent mandibular arch are considered the “halfway” point regarding the order of eruption in the oral cavity?
Premolars
