L4 MAND INCISORS Flashcards
Universal notitation for mandibular central incisors
24 and 25
Universal notitation for mandibular lateral incisors
23 and 26
When you mandibular central incisors erupt
…
When do mandibular lateral incisors erupt
….
When is the root development complete for mand central incisors
…
When is the root development complete for mandibular lateral incisors
…
When does calcification of mandibular incisor begin
…
When is the crown of mandibular incisors completely calcified
…
What is an interproximal contact
Where two adjacent teeth contact
What are embrasure
The spaces/spillway that widen out from the contact
How embrasure spaces do anterior teeth have
4
Incisal < gingival
Facial = lingual
How embrasure spaces do posterior teeth have
4
Occlusal = gingival
Facial < lingual
What are mandibular incisor used for
To incise or cut food
How many mandibular incisors
2 central
2 lateral
Mandibular incisor have smaller ________ diameters than any other tooth
Mesiodistal
What is the smallest tooth in the mouth
Mandibular central incisor
Mandibular incisors are broader _____ than _____
Mandibular incisors are broader buccolingually BL than mesiodistally MD
Outline of mand central incisor from facial view
Trapezoidal, tapers cervically
Describe incisal outline of mand central incisor from facial view
Incisal outline is straight
For mand central incisor the crown is approximately 2x as _____ as _____
2x as long IG as wide MD
Meioincisal and distoincisal line angles of mand central incisor from facial view are
Shape 90
What is the only symmetrical tooth in the mouth
mand central incisor
From facial view of mand central incisor, mesial and distal contact area are in the
Incisal 1/3, both are at the same level
In most teeth the _____ area is position more ____ than the ______ (even if it is located in the same 1/3 of the tooth)
Distal contact area,
More cervically,
Mesial contact
Any depressions on the labial surface of mand central incisor
No depressions, smooth
Describe shape of labial surface of mand central incisor from facial view
Labial surface is flat in the incisal 1/3 and become more convex cervically
How many roots of mand central incisor
Single root
Describe the shape of the root of a mand central incisor from a facial view
Single root, narrow mesiodistally curves distally in some cases
Is the crown or root longer of mand central incisor from facial view
Root is longer than the crown length
What is the outline of the mand central incisor from the lingual view
Trapezoidal
Do mand central incisor have a lingual fossa from the lingual view
Smooth rounded, slightly concave but no distant fossa
Describe the mesial and distal marginal ridges of the Mand central incisor from the lingual view
Mesial and distal marginal ridges are only minor elevations
The cingulum of the Mand central incisor is much _____ distinct than in the maxillary incisors
Much less
Are there any development groove on the Mand central incisor from the lingual view
No developmental grooves
Describe outline of Mand central incisor from mesial view
Triangular
Labial outline of Mand central incisor from mesial view is
Curved - convex
The height of contour of the labial surface on the Mand central incisor from the mesial view is in the
Cervical 1/3
From the mesial view of the Mand central incisor, the incisal edge lies lingual to
The line that bisects the tooth
CEJ of Mand central incisor curves _____ about 1mm more than on the _____
Incisally, distal
When worn, the incisal edge of the Mand central incisor angles to the
Facial
The developmental depression on the distal of root of Mand central incisor is _______ than on the mesial
Greater
Cervical line of Mand central incisor curves ______ 1mm less than on the _______
Incisally, mesial
Mand central incisor incisal view, the mesial 1/2 and distal 1/2 of the tooth are almost _____
Identical
From the incisal view of the Mand central incisor, the incisal edge is at _________ to a line bisecting the crown labiolingually
Right angles
Mand central incisor from incisal view shoes the tooth converges
Lingual the MD width of the labial surface is wider than the MD width of the lingual surface
Contact areas of the Mand central incisor from incisal view are centered
Faciolingually
How many roots in Mand central incisor
Single root
The root of the Mand central incisor is broader
Faciolingually than mesiodistally
Developmental depressions of Mand central incisor run
Longitudinally down root on mesial and distal
Distal depression of Mand central incisor is usually
Deeper than the mesial
Describe shape of root in cross section of Mand central incisor
Root is round/ovoid in cross section with depression on the mesial and distal
Describe pulp canal of Mand central incisor
Usually one pulp canal
Narrow MD and broad FL
Mand lateral incisor or mand central incisor is larger
Mand lateral incisor is larger,
Wider MD than central
Distal crown height of Mand lateral incisor from facial view is often _______ than the mesial crown height
Shorter
From facial view of Mand lateral incisor, the incisal edge slopes ______
Downward distally
Mesioincisal angel of Mand lateral incisor from facial view is
Sharp - 90 degrees
Distoincisal angle of Mand lateral incisor from facial view is
Rounded
Mand lateral incisor is ______ MD than central
Wider
Mesial and distal contacts of the Mand lateral incisor are in the
Incisal 1/3
Is the mesial or distal contact of the Mand lateral incisor more cervical
Distal contact iis more cervical than mesial
Describe the lingual view of Mand lateral incisor
Same as the lingual surface of the mandibular central incisor
The developmental depressions on the root of the Mand lateral incisor are __________ than on the mandibular central incisor
Are more pronounced
Distal developmental depression of Mand lateral incisors _________than the mesial
More marked
The distal aspect of Mand lateral incisor is _______ lingually
Twisted
Can you see the lingual surface (marginal ridge) when viewed from the distal
Lingual surface not visible from distal view
Incisal edge of the Mand lateral incisor is _______ to the tooth center
Lingual
Is the Mand lateral incisor symmetrical why or why not
No the distal part of crown appears to be curved lingually like as if the distal part is twisted on the root
The DF line angle of the Mand lateral incisor is positioned more _____
Lingual
The root of the Mand lateral incisor is similar to the man central but slightly
Larger
Shape of root to Mand lateral incisor
Ovoid/round
Depression on the distal of Mand lateral incisor is ____ than in central
Deeper
Mand lateral incisor typically have how many canals
1 but can have 2