Maxillary Incisors Flashcards
From a facial aspect, what is the shape of the crown outline of a maxillary central incisor:
Trapezoid
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 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 & incisal 1/3s
From this facial aspect, label each side of the maxillary central incisor a mesial or distal
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 edge of newly erupted incisors:
Mamelon
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 at the facial aspect of the maxillary central incisor- label the distoincisal & mesioincisal line angles:
Left- distoincisal
Right- mesioincisal
Junction of two tooth surfaces
Line angle
Junction of three tooth surfaces
Point angle
The red lines represent
Mesiofacial & distofacial line angles
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 & ridges
How many roots does a maxillary central incisor contain:
1
From a facial aspect of a maxillary central incisor, the shape of the root is:
Cone shaped, blunt apex
In a maxillary central incisor- describe the root length compared to crown length
Root is usually longer than the crown
From a facial aspect of a maxillary central incisor, the apex of the root is slightly:
Distal to the long axis of the tooth
A line extending through the center of the tooth lengthwise:
Long axis
A linear elevation on 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 the 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 a lingual aspect, what shape is the root
Cone shaped
On a maxillary central incisor from a lingual aspect, the root tapers:
Slightly distally
On a maxillary central incisor from a lingual aspect, the crown & root taper to:
Lingual
On a maxillary central incisor from a lingual aspect the CEJ is curved _____ toward the _____
Convex
Root
On a maxillary central incisor from a mesial aspect, the shape of the crown is:
Triangular or wedge shaped
On a maxillary central incisor from a mesial aspect, the facial outline is ______ while the lingual outline is _____
Slightly curved
Concavoconvex
On a maxillary central incisor from a mesial aspect the incisal edge is:
Flat
Describe the red and purple lines:
Red: concavoconvex
Purple: slightly convex (curved)
On a maxillary central incisor from a mesial aspect the tooth is bisected longitudinally with the incisal edge:
On the line or slightly lingual (rarely facial)
On a maxillary central incisor from a mesial aspect, the incisal surface slopes:
Slightly lingual
On a maxillary central incisor from a mesial aspect, what is the root shape:
Cone with blunt apex
On a maxillary central incisor from a mesial aspect, what is unique:
Mesial-Cervical line has the greatest amount of curvature from any tooth in the mouth
On a maxillary central incisor from a mesial aspect, the cervical line is ______ incisally
Convex
On a maxillary central incisor from a mesial aspect, the ____ curvature is greater than the ____ curvature
Mesial; distal
On a maxillary central incisor compare the thickness of the tooth from a 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 ____ on the distal than it is on the mesial
Less
From a distal aspect of a maxillary central incisor, the CEJ curves ______ in an incisal direction
Convexly
Label mesial & distal
Left- distal
Right- mesial
On a maxillary central incisor from a incisal aspect what shape is seen:
Triangle
On a maxillary central incisor from an incisal aspect, the tooth is wider ____ than _____
Facially than lingually
On a maxillary central incisor from a incisal aspect, the facial surface is:
Broad & flat
On a maxillary central incisor from a incisal aspect, the lingual surface is:
Narrow & curved
On a maxillary central incisor from a incisal aspect, the incisal edge bisects the:
Faciolingual diameter
Label the facial and lingual sides:
Top- facial
Bottom- lingual
On a maxillary central incisor from a incisal aspect, the distofacial line angle is:
Rounded
On a maxillary central incisor from a incisal aspect, the mesiofacial line angle is:
Prominent
On a maxillary central incisor from a incisal aspect, the apex of the cingulum lies:
Slightly distal to the bisecting line
On a maxillary central incisor from a incisal aspect, the point of convexity of the cingulum is _____ to the center of the lingual surface
Distal
On a maxillary central incisor from a incisal aspect, the mesial & distal contact points are centered on the proximal surfaces:
Labiolingually
The surface of a tooth that adjoins the surface of another tooth in the same arch (example: mesial & distal surfaces of adjacent teeth)
Proximal surface
On a maxillary central incisor from a incisal aspect, the _____ & _____ line angles are more prominent than the _____ & _____ line angles
MF & DF
ML & DL
On a maxillary central incisor from a incisal aspect, the ____ line angle is more obtuse & rounded than the ____ line angle
DF
MF
On a maxillary central incisor from a incisal aspect, what anatomical features can be seen on the labial surface:
Developmental depressions & ridges
Label the line angles
1- DF line angle
2- DL line angle
3- ML line angle
4- MF line angle
On a maxillary central incisor the crown is _____ than it is _____
Longer; 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; faciolingually
The maxillary central incisor develops from:
Four lobes
Name the four lobes the maxillary central incisor develops from:
Mesial
Distal
Labial
Lingual
What lobe of the maxillary central incisor forms the mesial marginal ridge & the mesial part of labial surface
Mesial lobe
What lobe of the maxillary central incisor forms the distal marginal ridge & distal part of labial surface
Distal lobe
What lobe of the maxillary central incisor forms a slightly prominent ridge
Labial lobe
What lobe of the maxillary central incisor forms the cingulum
Lingual lobe
Label the lobes of the maxillary central incisor
1- Distal lobe
2- Labial lobe
3- Mesial lobe
4- 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:
Three 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
Facial
From a cross sectional view of a maxillary central incisor pulp chamber, the ____ wall is longer than the ____
Mesial
Distal
Label the type of section of the maxillary central incisor root chambers
A- Mesiodistal section
B- Transverse section
C- Labiolingual section
Label the three walls comprising this transverse section of the maxillary central incisor root
1- Facial
2- Mesial
3- Distal
Label each view of the maxillary central incisor (from left to right):
Facial, Lingual, Incisal, Mesial, Distal
Number is assigned to the maxillary right lateral incisor:
7
Number assigned to the maxillary left lateral incisor:
10
Age the permanent maxillary lateral incisors erupt:
8-9 years of age
Maxillary lateral incisors supplement the _____ in function:
Central incisors
An interesting characteristic of the maxillary lateral incisors is that:
They vary in form more than any other tooth in mouth except molars
An interesting fact regarding the maxillary lateral incisor is that they 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 _____ & _____ on the lingual surface
Mesial & distal marginal ridges
Compared to the maxillary central incisors, the maxillary lateral incisors, the lingual fossa is:
Deeper
From a facial aspect of the maxillary lateral incisor, the shape the outline takes on is:
Trapezoidal
From a facial aspect of the maxillary lateral incisor, the incisal outline is more _____ than on the maxillary central incisor
Rounded
From a facial aspect of the maxillary lateral incisor, the mesial outline is:
Slightly convex
From a facial aspect of the maxillary lateral incisor, the mesial height of contour is at:
Junction of middle & incisal 1/3s
From a facial aspect of the maxillary lateral incisor, the mesioincisal angle is:
Slightly rounded
From a facial aspect of the maxillary lateral incisor, the distal outline is more ____ than in a maxillary central incisor
Rounded
From a facial aspect of the maxillary lateral incisor, the distal height of contour is:
In middle 1/3
Compare the MI and DI angles of a maxillary lateral incisor:
Distoincisal angle is more rounded
Compare the degree of curvature of the distoincisal line angles between the maxillary central & lateral incisors
DI angle is more rounded in the maxillary lateral incisors
From a facial aspect of the maxillary lateral incisor, the labial surface is more _____ than it is in the maxillary central incisor
Convex
From a facial aspect of the maxillary lateral incisor, the root is ______ and ______ or ______ than the central incisor & usually tapers _____
Pointed
As long or longer
Distally
From a lingual aspect of the maxillary lateral incisor, what shape does the outline take on:
Trapezoidal
From a lingual aspect of the maxillary lateral incisor, the lingual fossa is _____ & often contains a ____
Deeper
Lingual pit
From a lingual aspect of the maxillary lateral incisor, what anatomical features are prominent:
Mesial & distal marginal ridges
From a lingual aspect of the maxillary lateral incisor a pronounced ______ is present
Cingulum
From a lingual aspect of the maxillary lateral incisor, deep ___ are present
Developmental grooves
From a lingual aspect of the maxillary lateral incisor, the lingual developmental groove is on the ____ of the ____
Distal of Cingulum
Deep groove present distal to the cingulum of the maxillary lateral incisor
Lingual developmental groove
From a lingual aspect of the maxillary lateral incisor, the tooth tapers:
To the lingual
From a mesial aspect of the maxillary lateral incisors the crown take on a _____ shape
Traingular
From a mesial aspect of the maxillary lateral incisors, the labial outline is:
Slightly convex
From a mesial aspect of the maxillary lateral incisors, the lingual outline is:
Concavo-convex
From a mesial aspect of the maxillary lateral incisors, the height of controur on the facial & lingual surface is located in the:
Cervical 1/3
From a mesial aspect of the maxillary lateral incisors, the incisal edge is angled:
Lingually
From a mesial aspect of the maxillary lateral incisors, the cervical curvature curves _____ but less than the maxillary central incisor
Incisally
From a mesial aspect of the maxillary lateral incisors, the root is ____ shaped & tapers ____
Cone
Apically
From a mesial aspect of the maxillary lateral incisors, the line through the center of the root:
Bisects the incisal surface
From a distal aspect of a maxillary lateral incisor, the outline takes on a ____ shape
Triangular
From a distal aspect of a maxillary lateral incisor, the tooth appears ____ than the mesial view
Wider
From a distal aspect of a maxillary lateral incisor, the distal of the tooth is curved ___ to conform to a ____ shape
Lingually
Arch
From a distal aspect of a maxillary lateral incisor, the cervical line curvature is 1mm less than the ____ curvature
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 an incisal aspect of a maxillary lateral incisor, the contour is more ____ resulting in an ____ shape
Convex
Ovoid
From an incisal aspect of a maxillary lateral incisor, the crest of the cingulum is slightly _____ to the center of the tooth
Distal
From an 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 ______ compared to the maxillary central incisors
More rounded
From an incisal aspect of a maxillary lateral incisor, the mesial & distal contact areas are centered:
Labiolingually
Number of pulp canals found in the maxillary lateral incisors
Single canal
From a facial view of the maxillary lateral incisor, how many pulp horns are present
Two
What shapes can the cross sectional view of the maxillary lateral incisors take on:
Triangular, round, ovoid
Label the views of the maxillary lateral incisors (from left to right)
Facial, lingual, incisal, mesial distal
