The document describes the characteristics of primary mandibular anterior teeth, focusing on the central incisor and canine. It notes that primary teeth are smaller, whiter, and have more prominent cervical ridges than permanent teeth. Specific details are provided about the labial, lingual, mesial, distal, and incisal surfaces of the mandibular central incisor and canine, including crown and root morphology, ridges, contours, and proportions. The canine is described as having a tapered root, pointed cusp, and reduced lingual cingulum compared to the incisor.

1. MADIBULAR TEMPORARY ANTERIOR
TEETH
Name: Mohammmed Hasan Ahmed Al-hakari

2. GENERAL CHARACTERISTICS OF PRIMARY
ANTERIOR TEETH
 Smaller in size than the analogous
secondary teeth
 Whiter in color
 Crowns and roots of primary teeth have a
marked constriction at the cervix
 Labial cervical ridges more prominent than in
permanent teeth
 No mamelons on the incisal edges upon
eruption
 Roots are longer and narrower MD

3. MANDIBULAR TEMPORARY CENTRAL INCISOR
 LABIAL
 Flat surface with no
developmental grooves
 Mesial and distal sides
of the crown are
tapered evenly from the
contact areas towards
the cervix
 Compared to
permanent mandibular
CI:
 MD measurement is
smaller

4. MANDIBULAR TEMPORARY CENTRAL INCISOR
 LABIAL
 Crown is wide in
proportion to its length
 Resembles the
permanent maxillary
lateral incisor
 Root is long and tapers
evenly to the apex
 Root is pointed and
almost twice the length
of the crown

5. MANDIBULAR TEMPORARY CENTRAL INCISOR
 LINGUAL
 Middle and incisal thirds
may have a flattened
surface level with the
marginal ridges or may
have a lingual fossa
 Has prominent
cingulum slight lingual
fossa and faint marginal
ridges
 Crown and root
converge lingually

6. MANDIBULAR TEMPORARY CENTRAL INCISOR
 LINGUAL
 Tooth is narrower
lingually
 Crown and root
converge lingually
 Tooth is narrower
lingually

7. MANDIBULAR TEMPORARY CENTRAL INCISOR
 MESIAL
 Cervial line more
curved than in distal
aspect
 Incsal ridge centered on
the root axis line
 Convexity of the
cervical contours
labially and lingually at
the cervical third is
pronounced
 Shows a prominent
labial cervical ridge

8. MANDIBULAR TEMPORARY CENTRAL INCISOR
 MESIAL
 Crowns are wide Lali
due to large cingulum
 Lali measurement is
only about a millimiter
less than that of the
primary maxillary
central incisor
 Root is nearly flat and
evenly tapered
 Root apex more blunt
compared to labial and
lingual aspects

9. MANDIBULAR TEMPORARY CENTRAL INCISOR
 DISTAL
 Cervical line of the
crown is less curved
 Developmental
depression frequently
evident on the distal
side of root

10. MANDIBULAR TEMPORARY CENTRAL INCISOR
 INCISAL
 Incisal ridge is straight
and bisects the crown
Lali
 Labial surface presents
a flat surface slightly
convex
 Lingual surface
presents a flat surface
slightly concave

11. MANDIBULAR TEMPORARY CENTRAL INCISOR
 INCISAL
 Has essentially equal
MD and Lali dimensions
with temporary
mandibular lateral
incisor
 Crown tapers towards
the cingulum on the
lingual side

13. TEMPORARY MANDIBULAR CANINES

14. TEMPORARY MANDIBULAR CANINES
 Labial Aspect
 Crowns are longer inciso-
cervically than wide
mesiodistally.
 Sharp cusp tips like an
arrow.
 Roots are more tapered
and pointed.
 Roots shorter than
temporary maxillary
canines.
 Cervical third of proximal
crown margins do not
converge cervically.

15. TEMPORARY MANDIBULAR CANINES
 Labial Aspect
 No grooves on labial
surface.
 No style on incisal
margins.
 M & D heights of contour
are much nearer the
cervix.
 Labial surface is convex
in all directions.
 Three lobes
 Central lobe
 Mesial lobe
 Distal lobe

16. TEMPORARY MANDIBULAR CANINES
 Lingual Aspect
 Cingulum reduced in
size and less
prominent.
 Cingulum occupies less
than the cervical third of
the height of crown.
 Lingual ridges barely
discernible.
 Faint marginal ridges.
 Single concavity or
fossa.
 Cingulum narrow in
mesiodistal direction.

17. MESIAL AND DISTAL VIEW
Cervical ridges are prominent
 cusp tip is most often located
slightly lingual to the root axis
line.
 The cervical third of a
primary canine is much
thicker than incisor.
 Cervical lines curve incisally
more on the mesial side than
on the distal side
 The roots are bulky in the
cervical and middle thirds,
tapering mostly in the apical
third where the apex is bent
labially

18. TEMPORARY MANDIBULAR CANINES
 Mesial
 Labial Border
 slightly concave
 The border is divergent
from the long axis of tooth
and extends from the
mesio-incisal angle to the
cervical border
 Above the cervical
border,the curvature
increases as it rounds into
the cervial constriction
 Lingual Border
 convex and then
moderately concave
before it enters into the
convex cingulum.

19. TEMPORARY MANDIBULAR CANINES
 Mesial surface
 Labial and lingual
borders
 are divergent inciso-
cervically

20. TEMPORARY MANDIBULAR CANINES
 Mesial Surface
 Cervical Border
 is evenly concave toward
the root
 Mesial surface of the
crown
 is convex in the incisal
2/3
 Can be flatten or even
become concave toward
the center of the surface
above the cervical line

21. TEMPORARY MANDIBULAR CANINES
 Distal surface
 Cervical border
 Evenly concave toward
the root
 Of the crown
 More extensive than the
mesial surface
 Evenly convex

22. TEMPORARY MANDIBULAR CANINES
 Distal surface
 Labial border
 Moderately concave
 And becomes convex
above the cervical
constriction
 Lingual border
 Firstly convex at the
short distance
 Then concave and
convex again
 Influenced by the
cingulum

23. TEMPORARY MANDIBULAR CANINES
 Incisal
 Crown outline:
diamond- shaped
 nearly symmetrical,
except for the mesial
position of the cusp tips
 more bulky in the distal
half
 Crown is 0.4 mm wider
MD than Lali
 Cingulum centered or
just distal to the center
Actual tooth
Cast