Development of Primary Dentition Flashcards
Between what ages do the primary dentition typically erupt?
8-30 months
If the primary dentition erupts late, how will this correlate with the permanent dentition eruption?
Permanent will erupt later too
How many teeth are there in deciduous dentition?
20 teeth
Which tooth is the first primary tooth to erupt?
Lower central incisor
Which tooth is the last primary tooth to erupt?
Upper second molar
Is there more or less enamel in primary teeth?
Less enamel
Are the following characteristics of the deciduous dentition or permanent?
A.Symmetrical crown shapes
B.Interdental spacing
C.No angulation of the incisors
D.Less variability in occlusal relations than the permanent dentition
Primary dentition
Is it beneficial to have spacing between the primary incisors? Why?
Yes; allow spacing
T/F: In 75-80% of the time, if there is no interdental spacing in the primary teeth, crowding of the permanent teeth will NOT occur
False: Will occur
Widening of the arches occurs between the canines during ___- ____ yrs old?
4-8 yrs old
T/F: If there is crowding in the primary dentition, severe crowding will occur in the permanent dentition
True
______ between anterior primary teeth are important to get space for permanent incisor eruption
Diastemas
The upper incisors erupt to the _____ of primary teeth.
labial
Lower incisors tend to erupt to the ______.
lingual
T/F: There is no significant increase in arch size during the eruption of the permanent incisors
True
Anterior primary teeth are _____ than permanent teeth
smaller
T/F: Some primary posterior teeth are larger than their successor
True
Which primary tooth is much larger than its successor and is a major tool to create space?
2nd primary molar
An imaginary surface that passes through the occlusion of the teeth.
Occlusal plane (OP)
Primary teeth are positioned _____ degrees to the occlusal plane(Permanent teeth are not)
90 degrees
: (response of the dentoalveolar process to the skeletal dysplasia or to functional disturbance) are not fully expressed
Dentoalveolar compensations
T/F: If a malocclusion is diagnosed in the primary dentition, it will probably get worse during growth
True
The degree of vertical overlap of the mandibular incisors by their maxillary antagonists,
Overbite (Vertical overbite)
The distance between the labial surface of the mandibular incisors and the labial aspect of the incisal edge of the maxillary incisors,
Overjet (Sagittal overbite)
In ________, you must intervene quickly
Amelogenesis imperfecta
Which condition is worse? DI or AI
DI
