The maxillary second premolar serves to supplement the maxillary first premolar in function, characterized by its rounded crown and single root. This tooth has a shorter mesial slope compared to the distal slope, a more convex crown surface, and no deep developmental groove on the mesial surface. Its occlusal aspect is more rounded, with a shorter central groove and a potential for multiple supplementary grooves, resulting in a wrinkled appearance.

1. MAXILLARY
2ND
PREMOLAR
D R A M I T H A G , B D S , M D S
O R A L A N D M A X I L L O FA C I A L
PAT H O L O G Y

3. • Supplements the maxillary first premolar
in function
• Less angular ,rounded crown in all aspects
• Single root
• Smaller crown cervico occlusally
• Root length is as great or greater

4. BUCCAL ASPECT
• Not as long as that of the first
premolar
• Less pointed
• Mesial slope is
• shorter than the distal slope
• Buccal ridge of the crown may not
be so prominent whencompared
with the first premolar

5. LINGUAL ASPECT
Lingual cusp is longer making the crown
longer on the lingual side

6. MESIAL ASPECT
• Cusps of second premolar are shorter with the
buccal and lingual cusps more nearly the same
length
• Greater distance between cusp tips-that widens the
occlusal surface buccolingually
• No developmental depression on the mesial surface
of the crown as on the first premolar
• Crown surface is convex instead
• No deep dev. Groove crossing the mesial marginal
ridge

7. OCCLUSAL ASPECT
• Outline of the crown is more rounded or oval
rather than angular
• Central dev. groove is shorter and more
irregular
• Tendency toward multiple supplementary
grooves radiating from the central groove that
may extend out to the cusp ridges
• Makes for an irregular occlusal surface and
gives a very wrinkled appearance

8. Thank you