Maxillary deciduous anterior teeth

Maxillary Deciduous Anterior

Teeth

Central IncisorsLateral Incisors

Canines

Age of Eruption

Maxillary Teeth

Age of Eruption

Age of Falling Out

Central Incisor 8-12 months 6-7 years

Lateral Incisor 9-13 months 7-8 years

Canine 16-22 months 10-12 years

Maxillary Deciduous Central

Incisors

Maxillary Deciduous Central Incisors

Labial Surface The mesio-distal

diameter is greater than the cervico-incisal length.

Mesio-incisal angle is a right angle but the distal-incisal angle is round.

Maxillary Deciduous Central Incisors

Labial Surface Incisor edge is nearly

straight Cervical ridge is

obvious Developmental

grooves are not seen and the labial surface is very smooth

Maxillary Deciduous Central Incisors

Labial Surface Symmetrical Contact areas are the

same with the permanent successors

Maxillary Deciduous Central Incisors

Lingual Surface Well –developed

marginal ridges and highly developed cingulum

Lingual fossa is small Cingulum is large

Maxillary Deciduous Central Incisors

Proximal Surface La-li small incisal

thirds to middle thirds, crowns wider cervical third because of large cingulum.

The mesial and distal aspects are similar, triangle.

Maxillary Deciduous Central Incisors

Proximal Surface Curvature of

cervical line is distinct, curving toward the incisal edge.

Maxillary Deciduous Central Incisors

Incisal surface It is relatively straight

and the labial surface is much broader and smoother than the lingual surface

Maxillary Deciduous Lateral Incisor

Maxillary Deciduous Lateral Incisor

Similar to the central incisor from all aspects but differs in the ff.:

Crown is smaller in all directionsDisto-incisal angle are more roundedRoot much longer

Maxillary Deciduous Lateral Incisor

Labial Surface Cervico-incisal

diameter is greater than its Mesio-distal diamter

La Surface is smooth Root is cone-shaped

with tapered sides

Maxillary Deciduous Lateral Incisor

Lingual Surface

Well developed Marginal Ridges

Prominent Cingulum

Maxillary Deciduous Lateral Incisor

Proximal Surface MI < sharp

DI < more Rounded CEJ is distinct,

curving towards incisal ridge

Occlusal Surface Circular crown

outline

Maxillary Deciduous Canine

Maxillary Deciduous Canine

Labial Aspect Crown constricted at

the cervix Mesioincisal angle

more angular Distoincisal angle

rounded Cervical line is flat Sharp cusp tip Mesial cusp slope

longer than distal cusp slope

Maxillary Deciduous Canine

Labial Aspect Contact areas are

near the center of the crown cervicoincisally

MCA more cervically positioned than DCA

Root is longest among all the primary teeth prior to resorption

Blunt root apex

Maxillary Deciduous Canine

Lingual Aspect Bulky cingulum Well-developed MMR

and DMR Lingual ridge distal to

the middle of crown Narrower and deeper

distal fossa Broader and

shallower mesial fossa

Maxillary Deciduous Canine

Mesial Aspect Short incisal border Convex labial outline Lingual outline is

convex at the cingulum, becomes concave and resumes convexity at the cusp tip

Concave cervix Mesial surface is

evenly convex in all directions