Dental Anatomy: Central And Lateral Incisors

Front 1

When does the maxillary central incisor erupt?

Back 1

age 7

Front 2

Facial aspect of maxillary central incisor
1) crown is slightly larger _____ than ______
2) root may incline _____
3) contact is at _____
4) distal outline is more __ at __
5) incisal edge is _____ with # mamelons
6) ______ angle is sharper than _____
7) # shallow developmental depressions btween the # facial lobes

Back 2

1) inciso gingivally than MD
2) distally
3) Mesial is straight with contact at incisal 1/3
4) distal outline more round w/ contact at jcn of incisal and middle thirds
5) incisal edge straight with 3 mamelons; meso incisal angle is sharp; disto incisal is mroe round
7) 2 depression, 3 lobes

Front 3

Lingual aspect of maxillary central incisor
1) ____ than facial in what dimension?
2) What is the bulky convexity, and where is it?
3) what is the shallow concavity and what is it bordered by?
4) what might you see in #3?

Back 3

1) narrower than facial MD
2) cingulum is at cervical 1/3
formed by lingual developmental lobe
3) lingual fossa is borderd by incisal edge, cingulaul, mesial and sital marg. ridges
4) might have developmental grooves in fossa and lingual pit

Front 4

mesial aspect of maxillary central incisor
1) crown is roughly what shape?
2) where is the incisal tip and root
3) where is the facial and lingual height of contour?
4) how does the CEJ line curve?

Back 4

corwn is triangular/wedge shaped
incisal tip and root apex is on bisecting line
facial and lingual height of contour is in cervical 1/3
CEJ line curves toward insal more than any other tooth

Front 5

Distal of maxillary central incisor

1) shorter ____ than ____
2) CEJ is _____
3) contact area is _____

Back 5

1) shorter inciso cervically than mesial
2) CEJ less pronounced than mesial
contact area is more cervically positioned than mesial ((at junction of insial and middle thirds)

Front 6

Incisal aspect of maxillary central incisor

1) outline is what shape?
2) what line angles are distinct?
3) what outlines may be visible?

Back 6

roughly triangular outline
distinct mesio facial and disto facial line angle
facial lobe outlines may be visible

Front 7

root of the maxillary central incisor
1) root lenght is ____ times crown length
2) the shape is ____,
3) horizontal cross section shows..

Back 7

1) 1.5
2) single, conical, relatively strainght
3) external rounded triangular outline form and round traingular outline form of pulp

Front 8

Maxillary lateral incisor
1) When does it erupt?
2) How is it different from all the other teeth?

Back 8

1) erupts at age 8
2) More variable than all teeth morphologically except the 3rd molars

Front 9

Maxillary lateral incisor

Facial (labial)
1) more rounded _____
2) What edge may lsow ginigvally toward distal aspect?
3) What does it have when newly erupted?
4) ________ than central incisor
5) root is conical with ______ inclination
4) Mesial contact area is at?
5) distal contact area is at?

Back 9

ﰀﰀ Exhibits more curvature than
central

More rounded incisal angles (DI
more rounded than

Incisal edge may slope gingivally toward distal aspect (not as straight as central incisor’s incisal ed

Mamelons when newly erupted ﰀﰀ Shorter and narrower than central incisor

Root conical with distal inclination (narrow mesiodistally broad faciolingually)
ﰀﰀ Mesial contact are at junction of incisal and middle thirds
ﰀﰀ Distal contact area in middle third

Front 10

Maxillary lateral incisor

1) What prominence does it have than the central?
2) deeper ____ that might have developmental grooves
3) most pronounced what of all anteriors?

Front 11

Maxillary lateral incisor - mesial

1) _____ edge is over center
2) ____ line is less pronounced than central
3) _____ may be slightly more convex than central

Front 12

Maxillary lateral incisor - distal

1) _____ contour more rounded than central
2) distal ______ less curved than mesial
3) more _____ crown outline form

Front 13

Maxillary lateral incsior - incisal
1) more ___ facially and lingually than central incisor

Back 13

more convex

Front 14

Maxillary lateral incisor - cervical cross section
1) what outline form?
2) wider in what dimension?

Front 15

Mandibular central incisor
1) what age does it erupt at?
2) How is it different from all the other teeth in the body?

Front 16

Mandibular central incisor - facial aspect
1) crown is?
2) what does it have when newly erupted?
3) incisal edge is ____ and __ to long axis of tooth
4) sharp ____ and ____ angles
5) root is

Back 16

1) crown is bilaterally symmetrically
2) mamelons when newly erupted
mesial and distal contact areas at incisal third
-incisal edge straight perpendicular to long axis of tooth
-sharp MI and DI angles
-facial surface quite smooth
-root short, straight conical and very narrow mesiodistally

Front 17

Mandibular central incisor - lingual aspect
1) less distinct ____ ridges and ___ fossa
2) less prominent ____ than maxillary incisors

Front 18

Mandibular central incisor - mesial aspect
1) ___ edge slightly lingual to bisecting line
2) pronounced ____ line
3) What shape does it have on lingual?
4) ____ broad faciolingually?

Front 19

Mandibular central incisor - incisal aspect
1) ____ edge straight and slightly ____ to center
2) ____ edge perpendicular to faciolingual bisecting line
3) wider _____ than _______
4) roughly what outline form?
5) What portions are symmetrical?
6) Wht is slightly offset distally?

Back 19

-incisal edge straight and slightly lingual to center
-insial edge perpendicular to faciolingual bisecting line ** makes it different from lateral incisor
- wider FL than MD
-traingular crown
-M and D portions symmetrical
-cingulum may be slightly offset distally

Front 20

Root of mandibular central incisor
1) narrow ___ and broad ______
2) may have ____ and _____ root concavities
3) _______ cross section
4) what pulp canals?

Back 20

- single, short, and straight
- narrow MD, broad FL
- may have mesial and distal root concavities
-cervical cross section revewals narrow, elongated ribbon shaped pulp
-often 2 pulp canals, one facial and one lingual

Front 21

Mandibular lateral incisor - facial aspect
1) when does it erupt?
2) slightly ____ than central
3) _____ edge slopes gingivally toward distal
4) ____ angle slightly more than ____ angle
5) ______ contact area at incisal third
6) ______ contact area more cervically positioned but still at incisal third

Front 22

Mandibular lateral incisor - lingual aspect
1) What is it smooth like?

Mesial aspect
1) ______ line less pronounced

Back 22

Lingual: relatively smooth like central
mesial: similar to central; CEJ less pronounced

Front 23

Mandibular lateral incisor - distal
1) ______ line less curved than mesial
2) more what ridge shows and why?

Back 23

CEJ line less curved than mesial
-more of incisal ridge shows because distal surface is shorter incisogingivally than mesial surface

Front 24

Mandibular lateral incisor - incisal edge
1) how does crown appear?
2) incisal edge is not _____to FL
3) ______ more noticeably towards the _____

Front 25

Mandibular lateral incisor - root
1) _____ than central incisor root
2) may ahve _____ root concavities on M and D
3) ______ pulp canal usually