The Max. primary central incisor is similar to the permanent counterpart, except for:
- smooth labial surface, no mammelons
- more prominent cingulum, with labial and lingual cervical bulges
- height of crown is less than the mesiodistal width
The Max. lateral incisor is similar to the permanent counterpart, except for:
- smoother labial surface
- more distinct lingual anatomy
- facial and lingual cervical bulges
The Max. primary canine is similar to the permanent counterpart, except for:
- smooth, diamond shaped facial surface
- height of crown is less than mesiodistal diameter
- mesial and distal contact at the same level
- mesial incisal slope is longer than the distal
The Mand. primary central incisor is similar to the permanent counterpart, except for:
- smoother labial surface
- facial and lingual cervical bulges
- more prominent cingulum
- a developmental groove on the distal of root
The Mand. primary lateral incisor is similar to the permanent counterpart, except for:
- more prominent cingulum
2. facial and lingual cervical bulges
The Mand. primary canine is similar to the permanent counterpart, except for:
- smooth, arrow shaped labial surface
2. distal incisal ridge is longer than the mesial
The Max. primary first molar is ….. . It features …… cusps
the most atypical of all molars
* two cusps, mesiobuccal & mesiolingual. May have a distobuccal cusp, and rarely, a small distolingual cusp
The Max. primary first molar may have an extremely small cusp at …….
mesial ridge of the mesiobuccal cusp
The Max. primary first molar occlusal profile is ……
trapezoidal, with mesial longer than distal, and buccal longer than lingual
The Max. primary first molar occlusal table is ……, with a deep developmental groove separating …… . An occlusal ridge connects ……..
rectangular
- the buccal cusps (terminates in the central pit)
- mesiolingual cusp to the distobuccal cusp
The Max. primary first molar heights of contour are ……….
low, with cervical bulges
* Note that: it has 3 divergent roots (elephant charging shape)
The Max. primary second molar resembles the permanent first molar, except for:
- more bulbous, with prominent cervical ridges
2. very little root trunk
The Mand. primary first molar has ….. cusps. The transverse ridge connects the …….. cusps
4 cusps (2 buccal & 2 lingual, with the mesials being the largest)
- transverse ridge connects the mesial cusps
- Note that: the cusps are separated by a buccal groove & a lingual groove
- Looks more like a molar than the Max. first primary molar
The Mand. primary first molar mesial profile is …….., while the distal is …….
straight
highly convex
The Mand. primary first molar occlusal profile is ………, and the occlusal table is ….
trapezoidal (with mesial longer than distal, buccal longer than lingual)
* rhomboidal
The Mand. primary first molar has a “pregnant appearance” due to ………
It has ……. roots
low, and prominent buccal cervical ridge (unique) under the mesiobuccal cusp
* two (with the mesial larger)
The Mand. primary first molar has a central pit, from which …………… radiate
On the mesial ridge, it may have ………..
central groove (connect to buccal and lingual grooves) mesial marginal groove
The Mand. primary second molar resembles the permanent first molar, except for:
- more divergent roots with no trunk
- cervical bulges
- the buccal three cusps are equal in size (in contrast to permanent distal cusp, which is smaller)
- buccal cusps over the roots, while the lingual are outside the root outline
The highest & sharpest cusp on the Mand. first molar is ………. , while the largest cusp on the same tooth is …….
ML
MB
