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Questions
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Answers
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Characteristically the mesial side of the
root of deciduous maxillary central incisor have a |
Developmental groove. This at times is
accentuated as a concavity. |
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The distal surface of root of the deciduous
maxillary central incisor is |
Convex
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A line drawn through the contact areas of the
deciduous maxillary canine would bisect a line drawn from |
Cervix to cuspal tip
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The deciduous maxillary canine has the mesial
slope |
Longer than distal slope. On contrary the
distal slope is longer than mesial slope in a deciduous mandibular canine |
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From the incisal aspect the deciduous maxillary
canine has a shape of a |
Diamond
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The tip of the deciduous maxillary canine is
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Distal to the center of crown
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The deciduous mandibular central incisor
resembles |
Permanent maxillary lateral incisor
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The deciduous mandibular central incisor
often presents with a developmental depression on the |
Distal surface
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From the incisal aspect the deciduous
mandibular central incisor’s incisal ridge often divides the crown labiolingually with |
Equal thickness (bisects)
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The widest measurement of the crown of the
deciduous maxillary first molar is at |
Mesiodistally at contact area
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The
relative shape and size of deciduous maxillary first molar is suggestive of |
Permanent maxillary premolar
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In deciduous maxillary first molar, the
trifurcation begins |
Just below cementoenamel junction. In
permanent maxillary first molar the trifurcation begins 4 to 6 millimeters away from cementoenamel junction with a structure called root trunk. |
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In deciduous maxillary first molar, the
smallest root is the |
Distobuccal root. The palatal root is the
longest and broadest root |
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The number of cusp in deciduous maxillary
first molar is |
Three. The permanent maxillary first molars
have either four or five cusp. Three cusped deciduous maxillary molar is not uncommon, with a single lingual cusp. |
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The poorly designed cusp of the deciduous
maxillary first molar is the |
Distopalatal cusp. The prominent cusp is the
mesiopalatal cusp |
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Among the deciduous maxillary posterior teeth
the smallest is the |
First molar. Deciduous dentition has no
premolars and the first premolar is the smallest. |
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On the buccal outline of deciduous maxillary
first molar, in the cervical third there is a pronounced |
Convexity
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The crown outline of deciduous maxillary
first molar converges |
Palatally and distally. Palatal mesiodistal
diameter is smaller as compared to the buccal and buccopalatal diameter is greater at distal than mesial side. |
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The occlusal aspect of the deciduous
maxillary first molar is approximately |
Rectangular with marginal ridges as shorter
side |
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The normal deciduous maxillary first molar
has _____ cusps, _____ triangular fossae, _____ pits and _______ developmental groove. |
4, 2, 2, 3
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Prof. Rooban Thavarajah
Oral and Maxillofacial Pathologist
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