2nd Class Flashcards
The \_\_\_\_\_ tooth Numbering System also called the ”British System" is a dental notation system for associating information to a specific tooth, commonly used in the United Kingdom.
Palmer
Up to ____ months of acceleration or delay is within the normal range.
6 months
What is the sequence of primary eruption?
A (mand), A (max), B, D, C, E
The primary dentition is usually completed at ___ to _____ months.
24 to 30 months
Arc dimensions can be explained as what 3 things?
- Circumference.
- Length.
- Width.
When do the primary mand central incisors erupt?
8 months
When do the primary mandibular Lateral central incisors erupt?
13 months
When do the primary mand canines erupt?
20 months
When do the primary mand 1st molars erupt?
16 months
When do the primary mand 2nd molars erupt?
27 months
When do the primary max central incisors erupt?
10 months
When do the primary max lateral incisors erupt?
11 months
When do the primary max canines erupt?
19 months
When do the primary max 1st molar erupt?
16 months
When do the primary max 2nd molars erupt?
29 months
•The distance from the distal of the 2nd primary molar
on one side of the arch to that same surface on the
opposite side of the arch.
Arch Circumference (Perimeter)
•The perpendicular distance from a point between the central incisors
to a line connecting the mesial contacts of the 1st permanent molars.
Arch Length(depth)
•Transverse measurement from any tooth from one side to the other side is
considered as the arch width.
•Most of the time Inter-Canine Width is measured to evaluate any changes in
arch width.
Arch Width
The \_\_\_\_\_\_\_\_ (which teeth) determine the location for eruption of the permanent teeth in the future.
second primary molars
Are deviations in occlusion in the primary dent carried to perm dent? To a greater or lesser degree?
Yes; greater degree in perm teeth
_____ is a common condition in the primary dentition and
constitutes a very important feature of the dentition as it is an
indicator of favorable development of permanent occlusion.
Spacing
Perhaps lack of spacing suggests severe risk for ______ in the
permanent dentition.
crowding
Spacing is more common in the max or mand ? and
spaces are observed more among boys or girls?
Max; boys
The Permanent incisors are
considerably ____ than the
primary incisors.
larger
This difference between the
amount of space needed and
the amount of space available
is called _______
Incisal Liability
Incisal liability is about ___ mm in
the maxilla
7
Incisal liability is about ___ mm in
the mandible
5 mm
Spaces located between the lateral incisors and canines in the
upper arch and between the first molars and canines in the
lower arch are called _________
Primate Space.
Where is the Primate Space in the maxilla?
Btwn primary lateral incisors and canines
Where is the Primate Space in the mandible?
Between primary canine and 1st molar
The relation between the _____ surfaces of the maxillary and mandibular
second primary molars is, one of the most important factors that
influence the future occlusion of the permanent dentition.
distal
•When the distal surfaces of the upper and lower second primary
molars were in the same vertical plane in centric occlusion.
Flush terminal plane
•When the distal surface of the lower second primary molar is more
distal to that of the upper in centric occlusion;
Distal step:
•When the distal surface of the lower second primary molar is
more mesial to that of the upper in centric occlusion.
Mesial step:
