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53 Cards in this Set

  • Front
  • Back

Permanent Incisors

Central and Later

Max: #7-10

Mand: #23-26

Permanent Incisors Function

cut/incisal edge, speech and esthetics

Permanent Incisors

Arch resemblance

incisors in the same arch are similar but not to opposing arch

Permanent Incisors




Incisor Class Traits

Incisal edge

incisal 2/3 of crown is compressed labiolingually

Incisor Class Traits


-joining the developmental lobes, usually in newly erupted teeth or in an open bite

-attrition wears these off

Incisor Class Traits

Position/Angulation of marginal ridges

parallel to the long axis of the tooth

Incisor Class Traits

Lingual fossa/cingulum

concave and convex

Maxillary Incisor Arch Traits

-Width is greater than mand. width

-Marginal ridges are more prominent

-Cingulum/lingual pit are more prominent

-Root- equal dimensions

-Labial surface is more rounded (view incisally)

-Crown is wider mesial-distally

-Wear facets- lingual incisal

Maxillary Central Incisors

Eruption age- 7-8

Root Completed- 10

Maxillary Central: Labial View

-Widest- mesial-distal of any incisor

-MI angle- at a right angle

-Di angle- slightly rounded

-Height of contour/crest of curvature-highest point of the tooth

Labial View Cont.

-Mesial outline- contact close to incisal edge

-Distal outline- more convex, contact junction of incisal and middle 1/3s

-Facial surface- may see developmental grooves

-Imbrication lines- faint elevated lines- cervical 1.3, parallel to CEJ

-Root- conical (cone shaped)

Maxillary Central: Lingual View

-Crown profile- converges toward lingual

-Cingulum/fossa- concave/convex

-Incisal ridge- newly erupted

-Incisal edge- slopes with age

-Marginal ridges- very pronounced

-CEJ- very pronounced

Maxillary Central: Mesial View

-Crests of Curvature: Cervical 1/3

-CEJ: very deep, most curved of any maxially

-Root: in line

Maxillary Central: Distal View

-Similar to mesial except CEJ

-CEJ- more shallow dip

-Distal Contact- slightly more cervical

-Root: toward distal

Maxillary Central: Incisal View

-Can see more facial than lingual

-ML>DL outline

-Cingulum- distal to midline

-MMR and DMR- MMR linger because cingulum is more distal

Maxillary Lateral: Labial View

-Smaller, except root may be longer

-Rounded, especially MI and DI

-Mesial contact- junction of incisal and middle 1/3

-Distal contact- center of middle 1/3

-Root- distal inclination

Maxillary Lateral: Lingual View

-Outline same as labial

-MMR/DMR more prominent

-Deeper fossa/fit

-CEJ- curved

Maxillary Lateral: Mesial View

-Same as central, just smaller

-CEJ- less curvature than central

-Crest of Curvature- slightly more incisally placed compared to central

Maxillary Lateral: Distal View

-Similar to mesial

-CEJ- less curvature

-DMR gives thicker appearance

Maxillary Lateral: Incisal View

Same expect: cingulum prominent (smaller, centered); rounded facial surface


-Labial Outline: centrals, tapering, square or oval; laterals, pegged

-Labial lobes- central, deep grooves

-Mamelons- vary in number

-Cingulum- central talon cusp, lateral-lingual or exaggerated fossa

-Root size- short or long

Mandibular Incisor Arch Traits

-Narrowest teeth


-MR and cingula are not prominent

-Roots- wider labiolingually

Mandibular Central Incisor

Eruption: 6-7 years old

Root complete: 9 years old

Mandibular Central Incisor: Labial View

-MI and DI line angles/incisal edge

-Contacts – both incisl 1/3 at same height

-Mesial/distal outlines- converge equally to the cervical

-CEJ – semi-circle

-Root – narrow, distal inclination

Mandibular Central Incisor: Lingual View

-Anatomy is faint

-CEJ-more curvature due to the convergence of the crown lingually

Mandibular Central Incisor: Mesial View

-Crests of Curvature- lingual and facial in cervical 1/3

Incisal edge-Slightly lingual to long axis

-Root-Flat and broad

Mandibular Central Incisor: Distal View

Same as mesial except:

CEJ less curvature

Developmental groove-Deeper on this aspect than on the mesial root surface

Mandibular Central Incisor: Incisal View

-Bilateral symmetry

-Dimensions-Greater labiolingually

-Cingulum-Slightly to distal


Mandibular Lateral Incisor

-Eruption: 7-8 years old

-Root completed: 10 years old

Mandibular Lateral: Labial View

-Not symmetircal

-Incisal edge sloped toward distal

-Outline and line angles-Mesial outline greater, DI more rounded

-Contacts-Both in incisal 1/3, with distal more cervical

-Wider M-D than central

Mandibular Lateral: Lingual View

-Cingulum-Offset, more distal than central

-CEJ-Curvature is also slightly offset toward distal

Mandibular Lateral: Mesial View

CEJ: More curve than distal

Mandibular Lateral: Distal View

CEJ: Marginal ridge is thicker

Mandibular Lateral: Incisal View

-Not at 90 degrees

-Follows curvature of arch

-Twisted towards canine


-Labial surface inclination


-Root curvature


#6, 11, 22, 27

-Third from midline/transitional


Canine Fuctions

-Pierce, hold and tear food

-Stongest tooth in the arch

1. cornerstone of occulusion

2. usually the darkest tooth

3. protects posterior teeth

Canine Class Traits


-Root- longest

-Functional lingual surface- only cusped tooth that have this function

Maxillary Canine

-Eruption: 11-12 years old

-Root completed: 14-15 years old

Maxillary Canine Arch Traits

-Incisal margin- occupies a 1/3 to 1/2 of crown height

-Lingual anatomy- more pronounced

-Labiolingual diameter- greater cervical

Maxillary Canine: Labial View

Two cusp ridge to form the cusp (distal greater than mesial)

-DCR > MCR – places cusp tip mesial of midline

Outlines – distal much stronger convexity, large bulge

Root – long and conical, distal inclination, concavities

Imbrication lines – possible

Crests of curvature:

-Mesial - junction of middle and incisal 1/3

-Distal – middle 1/3, large bulge

Maxillary Canine: Lingual View

-Two cusp ridges

-Prominent MMR/DMR

-Lingual ridge – extends from cusp to cingulum

-Canines are the only teeth that have a lingual ridge

Maxillary Canine: Mesial View

Crests of curvature

Labial outline- cervical 1/3

Lingual outline – cervical 2/3 convex, incisal 1/3 is flat

Cusp – in long axis or just facial

Root- greater labiolingual dimension

CEJ- greater curvature on mesial

Maxillary Canine: Distal View

Root- deeper concavity

CEJ – slightly less than mesial

Maxillary Canine: Incisal View

-Asymmetry- greater labiolingually

-Labial 1/2> Lingual 1/2

-Developmental depressions


1. Cusp Sharpness

2. Degree of slope from cusp

Mandibular Canine

Eruption: 9-10 years old

Root Completed: 11-13 years old

Mandibular Canine Arch Traits

-Cusp- not as pronounced

-MMR/DMR- less convergence

-Incisal margin- confined to incisal 1/4

-Lingual anatomy – less prominent

-Contacts – more incisally placed

Mandibular Canine: Labial View

-Outlines- straight below contact

-Contacts- mesial incisal 1/3, distal junction of incisal and middle 1/3s

-Cusp ridges – DCR > MCR

-Root pointed

-CEJ – slight arc

Mandibular Canine: Lingual View

-Less anatomy

-Root- distal inclination

-CEJ- offset to distal, less curvature than labial

Mandibular Canine: Mesial View

-Cusp tip- just lingual to long axis

-Labial outline- convex arc

-Lingual outline- flat to concave

-Contact- middle to incisal 1/3s

-CEJ - less curved than incisors

Mandibular Canine: Distal View

-Contact- more cervically placed than mesial

-CEJ- less curvature

-Root- deeper groove than mesial

Mandibular Canine: Incisal View

-Labial surface:

1 – grooves lesser or absent

2 – rounder towards mesial

-Cingulum- offset to distal

-Variation – root bifurcation in apical 1/3