DA Compendium page 1

Question 1

Formula for primary dentition per maxillary/mandibular quadrant

Answer 1

i 2/2
c 1/1
m 2/2

Question 2

Formula for the permanent dentition per maxillary/mandibular quadrant

Answer 2

I 2/2
C 1/1
P 2/2
M 3/3

Question 3

Contact areas on Maxillary anterior teeth

Answer 3

Central Incisor –> IJ
Mesial: Incisal 1/3
Distal: Junction of Incisal & Middle 1/3

Lateral Incisor –> JM
Mesial: Junction of Incisal & Middle 1/3
Distal: Middle 1/3

Canine –> JM
Mesial: Junction of Incisal & Middle 1/3
Distal: Middle 1/3

Question 4

Contact areas on Mandibular anterior teeth

Answer 4

Central Incisor –> II
Mesial: Incisal 1/3
Distal: Incisal 1/3

Lateral Incisor –> II
Mesial: Incisal 1/3
Distal: Incisal 1/3

Canine –> IM
Mesial: Incisal 1/3
Distal: Middle 1/3

Question 5

Contact areas on Posterior teeth as a generality, have proximal contact areas where?

Answer 5

• positioned in the middle 1/3 of the crown occlusocervically
• Mesial contact area is typically positioned more occlusally than the distal
• Contact areas are ovoid, slightly wider in a faciolingual dimension

Question 6

What are the exceptions to the general rules to contact areas on posterior teeth

Answer 6

1. Mesial contact area of mandibular 1st premolar is positioned more cervically (Sloped MMR) than the distal
2. Contact areas on the medial surfaces of the maxillary & mandibular molars are located at the junction of the occlusal & middle 1/3

Question 7

Describe the faciolingual contact areas of all teeth

Answer 7

• All teeth have faciolingual proximal contact areas located in the Middle 1/3 of the crown
• Posterior teeth tend to have theirs positioned slightly more toward the facial