deciduous teeth

Question 1

51 61
maxillary central incisor

Answer 1

• round full shape resulting in bulbous cup shape
• constricted at neck
• increased mesiodistal diameter, greater than height of crown

Question 2

52 62
maxillary lateral incisor

Answer 2

• mesiodistally smaller than central
• cingulum not as prominent
  rounded distoincisal angle

Question 3

81, 71
mandibular central incisor

Answer 3

• bilaterally symmetrical
• constricted at neck
• more rounded cup shape than permanent
• bulge on labial & lingual

Question 4

82, 72
mandibular lateral incisor

Answer 4

• Larger than lower central
• Asymmetrical, incisal edge follows line of arch, distal twist
• Rounded distoincisal angle

Question 5

53, 63
maxillary canine

Answer 5

• Cusp very pointed, more than perm canine
• Cervical bulge
• mesial & distal contact areas are on same level
• mesial cusp slope LONGER than distal

Question 6

83, 73
mandibular canine

Answer 6

• Crown height > mesiodistal diameter
• Smaller and slimmer than upper
• Sides do not converge as much as upper

Question 7

54, 64
maxillary first molar

Answer 7

• 4 cusps but often has 3 or 2
• ML cusp largest
• Pronounced bulge (Tubercle of Zuckerland) on mesial side of buccal
• Viewed occlusally, outline converges lingually & distally

Question 8

55, 65
maxillary second molar

Answer 8

• Morphologically like perm 6: oblique ridge
• 4 cusps
• Roots more slender and diverge more than perm
• Prominent bulge on cervical part of buccal surface

Question 9

85, 75
mandibular second molar

Answer 9

• Morphologically like perm 6: 5 cusps
• Equal-sized 3 buccal cusps
• Prominent bulge on buccal surface