Mandibular Temporary Anterior Teeth

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