Maxillary Incisors Flashcards
From the facial aspect of a maxillary central incisor, what shape is the crown outline?
Trapezoidal
From a facial aspect of a maxillary central incisor, the anatomical crown is:
Longer than it is wide
From a facial aspect of a maxillary central incisor, the mesial outline of the tooth is relatively:
Straight only slightly convex
From a facial aspect of a maxillary central incisor, the height of convexity of the mesial surface is in the:
Incisal 1/3
From a facial aspect of a maxillary central incisor, the distal outline is more _____ than the mesial outline
Convex
From a facial aspect of a maxillary central incisor, the height of contour on the distal is at the:
Junction of middle and incisal 1/3
Label the mesial and distal sides from the facial aspect of the maxillary central incisor
Left- distal
Right- mesial
From a facial aspect of a maxillary central incisor, the incisal outline is:
Straight
On newly erupted maxillary central incisors, ____ are commonly present
Mamelons
One of three rounded protuberances found on the incisal edges of newly erupted incisors:
Mamelons
From a facial aspect of a maxillary central incisor, the mesioincisal angle is:
A right angle
From a facial aspect of a maxillary central incisor, the distoincisal angle is:
More rounded than the mesioincisal angle
Looking from a facial aspect of a maxillary central incisor, label the distoincisal and mesioincisal line angles:
Left- distoincisal
Right- mesioincisal
The junction of two tooth surfaces:
Line angle
Junction of three tooth surfaces
Point angle
From a facial aspect of a maxillary central incisor, the cervical line (CEJ) is curved:
Apically
From a facial aspect of a maxillary central incisor what anatomical features are present?
Developmental depressions and ridges
How many roots does a maxillary central incisor contain?
One
From a facial aspect of a maxillary central incisor, what is the shape of the root?
Cone shaped with a blunt apex
In a maxillary central incisor, describe the length of the root compared to the crown:
Root is usually longer than the crown
From a facial aspect of a maxillary central incisor, the apex of the root is slightly:
To the distal of the long taxis of the tooth
A line extending through the center of the tooth lengthwise
Long axis
A linear elevation on a the surface of a tooth:
Ridge
Ridges are named according to their:
Location
A lingual fossa is bounded by:
Incisal edge, mesial/distal marginal ridges & cingulum
Occasionally present on the lingual aspect of a maxillary central incisor:
Lingual pit
Bulbous convexity on the cervical third of the lingual surface on an anterior tooth
Cingulum
A small pinpoint depression in the depths of developmental processes:
Pit
On a maxillary central incisor, from the lingual aspect, what shape is the root?
Cone shaped
On a maxillary central incisor, from the lingual aspect, the root tapers:
Slightly distally
On a maxillary central incisor, from the lingual aspect, the crown and root taper to:
Lingual
On a maxillary central incisor, from the lingual aspect, the CEJ is curved _____ toward the ____.
Convex; root
On a maxillary central incisor, from the mesial aspect, the shape of the crown is:
Triangular/wedged
On a maxillary central incisor, from the mesial aspect, the facial outline is ____ while the lingual outline is ____.
Slightly curved; concavoconvex
On a maxillary central incisor, from the mesial aspect, the incisal edge is:
Flat
Describe the lines:
Red: concavoconvex
Blue: convex (slightly curved)
On a maxillary central incisor, from the mesial aspect, the good is bisected longitudinally with the incisal edge on:
The line or slightly lingual (rarely facial)
On a maxillary central incisor, from the mesial aspect, the incisal surface slopes:
Slightly lingual
On a maxillary central incisor, from the mesial aspect, what is the root shape?
Cone w/ blunt apex
On a maxillary central incisor, from the mesial aspect, what is unique?
Mesial cervical line has the greatest amount of curvature of any tooth in the mouth
On a maxillary central incisor, from the mesial aspect, the cervical line is:
Convex incisally
On a maxillary central incisor, from the mesial aspect, the ___ curvature is greater than the ____ curvature
Mesial greatest than distal
On a maxillary central incisor, compare the thickness of the tooth from the distal aspect to the mesial aspect:
Crown looks thicker in the incisal 1/3 from a distal aspect
On a maxillary central incisor, the curvature of the cervical line is _____ from a distal aspect, than on the mesial
Less
On a maxillary central incisor, from the distal aspect, the CEJ curves:
Convex toward incisal
Label mesial/distal
Left distal, right mesial
On a maxillary central incisor, from the incisal aspect, what shape is seen?
Triangle
On a maxillary central incisor, from the incisal aspect, the tooth is wider _____ than ____.
Facially than linigually
On a maxillary central incisor, from the incisal aspect the facial surface is:
Broad and flat
On a maxillary central incisor, from the incisal aspect the lingual surface is:
Narrow and curved
On a maxillary central incisor, from the incisal aspect, the incisal edge bisects the:
Faciolingual diameter
Labels facial and lingual
Top: facial
Bottom: lingual
On a maxillary central incisor, from the incisal aspect, the distofacial line angle is:
Rounded
On a maxillary central incisor, from the incisal aspect, the mesiofacial line angle is:
Prominent
On a maxillary central incisor, from the incisal aspect, the apex of the cingulum lies:
Slightly distal to the bisecting line
On a maxillary central incisor, from the incisal aspect, the point of convexity from the cingulum is _____ to the center of the lingual surface
Distal
On a maxillary central incisor, from the incisal aspect, the mesial and distal contact points are centered on the proximal surfaces:
Labiolingually
The surface of a tooth that adjoin is the surface of another tooth in the same arch: (example- mesial and distal surfaces of adjacent teeth)
Proximal surface
On a maxillary central incisor, from the incisal aspect, the ____ and ____ line angles are more prominent than the ___ and ___ line angles
MF and DF ; ML and DL
On a maxillary central incisor, from the incisal aspect, the ____ line angle is more obtuse and rounded than the ___ line angle.
DF; MF
On a maxillary central incisor, from the incisal aspect, what anatomical features can be seen on the Labial surface
Developmental depressions and ridges
Name the line angles
- DF line angle
- DL line angle
- ML line angle
- MF line angle
On a maxillary central incisor, the crown is ____ than it is ____
Longer than it is wide
On a maxillary central incisor, the root is ___ compared to the crown
Longer
On a maxillary central incisor, the crown is wider ___ than _____.
Mesiodistally than faciolingually
The maxillary central incisor develops from:
4 lobes
Name the 4 lobes that the maxillary central incisor develops from:
Mesial, distal, labial, lingual
What lobe of the maxillary central incisor forms the mesial marginal ridge and mesial part of labial surface?
Mesial lobe
What lobe of the maxillary central incisor forms the distal marginal ridge and distal part of labial surface
Distal lobe
What lobe of the maxillary central incisor forms the slightly prominent ridge?
Labial
What lobe of the maxillary central incisor forms the cingulum?
Lingual lobe
Label the lobes of the maxillary central incisor:
- Distal lobe
- Labial lobe
- Mesial lobe
- Lingual lobe
Number of pulp canals in maxillary central incisor:
Single canal
From the facial view of a maxillary central incisor, the pulp chamber has:
3 pulp horns
From the facial view of a maxillary central incisor, the three pulp horns:
Disappear with age
From a cross-sectional view of a maxillary central incisor, what shape does the pulp chamber take on?
Triangular
From a cross-sectional view of a maxillary central incisor what walls make up the triangular shape of the pulp canal?
Mesial, distal,and facial
From a cross-sectional view of a maxillary central incisor pulp chamber, the ___ wall is longer than the ___ wall.
Mesial longer than the distal wall
Label the type of section of the maxillary central incisor root chambers:
A: mesiodistal
B: transverse section
C: Labiolingual section
Label the walls making up the transverse section of the maxillary central incisor root:
A- facial
B- mesial
C- distal
Label the views of the maxillary central incisor from left to right:
Facial, lingual, incisal, mesial, distal
What number is assigned to the maxillary right lateral incisor?
7
What number is assigned to the maxillary left lateral incisor?
10
When do the permanent maxillary lateral incisors erupt?
8-9 years old
The maxillary lateral incisors supplement the ____ in function.
Central incisors
An interesting fact is that the maxillary lateral incisors:
Vary in form more than any other tooth in the mount except 3rd molars
An interesting fact is that maxillary lateral incisors are the most frequently:
Congenitally absent anterior tooth
The maxillary lateral incisors are similar in shape to the:
Maxillary central incisors
Compared to the maxillary central incisors, the maxillary lateral incisors: are _____ in all dimensions except for ____.
Smaller; root length
Compared to the maxillary central incisors, the maxillary lateral incisors are more ____.
Rounded
Compared to the maxillary central incisors, the maxillary lateral incisors contain more pronounced ____ and _____ on the lingual surface.
Mesial and distal marginal ridges
Compared to the maxillary central incisors, the maxillary lateral incisors lingual fossa is:
Deeper
From a facial aspect of a maxillary lateral incisor, the shape the outline takes is:
Trapezoidal
From a facial aspect of a maxillary lateral incisor, the incisal outlined is more ____ than on the maxillary central incisor
Rounded
From a facial aspect of a maxillary lateral incisor, the mesial outline is:
Slightly convex
From a facial aspect of a maxillary lateral incisor, the mesial heigh of contour:
@ junction of middle and incisal 1/3
From a facial aspect of a maxillary lateral incisor, the mesioincisal angle is:
Slightly rounded
From a facial aspect of a maxillary lateral incisor, the distal outline is more ____ than a maxillary central incisor.
Rounded
From a facial aspect of a maxillary lateral incisor, the distal heigh of contour is:
In middle 1/3
Compare the DI and MI angles of a maxillary lateral incisor:
Distoincisal angle is more rounded
Compare the degree of curvature of the DI line angle between the maxillary central and lateral incisors
DI angle is more rounded in the maxillary lateral incisors
From a facial aspect of a maxillary lateral incisor, the labial surface is more _____ than the central incisor
Convex
From a facial aspect of a maxillary lateral incisor the root is _____ and _____ or _____ than the central incisor and usually tapers _____.
Pointed and as long or longer; distally
From a lingual aspect of a maxillary lateral incisor, what shape does the crown take on?
Trapezoidal
From a lingual aspect of a maxillary lateral incisor, the lingual fossa is _____ and often contains ____.
Deeper; lingual pit
From a lingual aspect of a maxillary lateral incisor, what anatomical features are present?
Prominent mesial and distal marginal ridges
From a lingual aspect of a maxillary lateral incisor, a pronounced ____ is present.
Cingulum
From a lingual aspect of a maxillary lateral incisor, deep ____ are present.
Developmental grooves
From a lingual aspect of a maxillary lateral incisor, the lingual developmental groove is on the _____ of the ____.
Distal of cingulum
What is the deep groove present distal to the cingulum of the maxillary lateral incisor?
Lingual developmental groove
From a lingual aspect of a maxillary lateral incisor, the tooth tapers:
Lingually
From a mesial aspect of a maxillary lateral incisor, the crown takes on what shape?
Triangular
From a mesial aspect of a maxillary lateral incisor, the labial outline is slightly:
Convex
From a mesial aspect of a maxillary lateral incisor, the lingual outline is:
Concavo-convex
From a mesial aspect of a maxillary lateral incisor, the height of contour on the facial and lingual surfaces is located in the:
Cervical 1/3
From a mesial aspect of a maxillary lateral incisor, the incisal edge is angled:
Lingually
From a mesial aspect of a maxillary lateral incisor, the cervical curvature curves ___, but less than the ____.
Incisally; maxillary central incisor
From a mesial aspect of a maxillary lateral incisor, the root is ____ shaped and tapers ____.
Cone; apically
From a mesial aspect of a maxillary lateral incisor, the line through the center of the root bisects the:
Incisal surface
From a distal aspect of a maxillary lateral incisor, the crown takes on what shape:
Triangular
From a distal aspect of a maxillary lateral incisor, the tooth appears ____ than in the mesial view
Wider
From a distal aspect of a maxillary lateral incisor, the distal of the tooth is curved _____ to conform a ____ shape.
Lingually; arch
From a distal aspect of a maxillary lateral incisor, the cervical line is 1mm ____ than the ____ curvature
Less; mesial
From a distal aspect of a maxillary lateral incisor, a ______ may be present on the distal of the crown extending down the root.
Developmental groove
From a incisal aspect of a maxillary lateral incisor, the contour is more ____ resulting in a ____ shape.
Convex; ovoid
From a incisal aspect of a maxillary lateral incisor, the crest of the cingulum is slightly _____ to the center of the tooth
Distal
From a incisal aspect of a maxillary lateral incisor, the ___ line angle is more rounded than the ____ line angle
DL ; ML
Both the DL and ML line angles of the maxillary lateral incisors are ______ than in the maxillary central incisor
More rounded
From a incisal aspect of a maxillary lateral incisor, the mesial and distal contact areas are centered:
Labioloingually
How many pulp canals are found in the maxillary lateral incisors?
Single canal
In the maxillary lateral incisors from a facial view, how many pulp horns are present?
2 pulp horns
What shapes can the cross sectional view of the pulp canal take on of the maxillary lateral incisor?
Triangular, round, or ovoid
Label the views of the maxillary lateral incisor from left to right:
Facial, lingual, incisal, mesial, distal
