Dental Anatomy Facts
NBDE Part 1
Exam 2026
Question and Answers
Expert Verified
(With A+ Grades Guarantee)
2026
, 300 Dental Anatomy Facts: NBDE Part 1
Study online at https://quizlet.com/_3kjg80
1. Primary teeth are more or less mineralized than Less mineralized
permanent teeth? More worn
Therefore, are they more or less worn?
2. The difference in space of the primary to perma- 2-4 mm
nent dentition
3. Mamelons that remain beyond age 10 generally An open bite
indicate what?
4. Calcification of the primary roots is normally 3-4 years of age
completed at:
5. The pattern of eruption for primary teeth: Centrals, Laterals, 1st Molars, Ca-
Two notes to keep in mind: nines, 2nd Molars
Notes
1. Front to back except Canine
2. Lower before upper except Lat-
erals
6. The primate space in maxillary primary dentition Lateral and Canine
is located between:
7. The primate space in mandibular primary denti- Canine and 1st Molar
tion is located between: [you go one back]
2026
, 300 Dental Anatomy Facts: NBDE Part 1
Study online at https://quizlet.com/_3kjg80
8. The primary spacing for the anterior teeth is the growth of the dental arches
most frequently caused by:
9. The direction of primary enamel rods in the cer- Cervical 1/3 Enamel Rods:
vical third is an _______________ direction. Primary = Occlusal enamel rods
Permanent = Gingival/Apical
The direction of permanent enamel rods in the enamel rods
cervical third is an _______________ direction.
10. The primary molars differ from permanent mo- divergent
lars in that their roots are more ___________.
11. Primary molars lack an identifiable ___________. root trunk
12. Which primary tooth has the smallest facio-lin- Mandibular Central Incisor
gual crown dimension?
2026
, 300 Dental Anatomy Facts: NBDE Part 1
Study online at https://quizlet.com/_3kjg80
13. Which primary and permanent tooth is the most Primary and Permanent
bilaterally symmetrical tooth? Mandibular Central Incisors
14. In delayed resorption of primary incisors, the lingually (shark teeth)
permanent incisors usually erupt ___________.
15. The primary central incisor exhibits a prominent Both facial and lingual
cervical ridge on which surfaces: facial or lingual?
16. From a facial view, the crown of a primary canine Mesio-incisal slope (Mesial Cusp
has a longer slope on the mesial-incisal slope Ridge)
(mesial cusp ridge) or distal-incisal slope (distal
cusp ridge)? Permanent Maxillary 1st Premo-
lar
This is the same for which permanent tooth? All other canines and premolars
DCR > MCR, cusp tip = Mesial
2026
NBDE Part 1
Exam 2026
Question and Answers
Expert Verified
(With A+ Grades Guarantee)
2026
, 300 Dental Anatomy Facts: NBDE Part 1
Study online at https://quizlet.com/_3kjg80
1. Primary teeth are more or less mineralized than Less mineralized
permanent teeth? More worn
Therefore, are they more or less worn?
2. The difference in space of the primary to perma- 2-4 mm
nent dentition
3. Mamelons that remain beyond age 10 generally An open bite
indicate what?
4. Calcification of the primary roots is normally 3-4 years of age
completed at:
5. The pattern of eruption for primary teeth: Centrals, Laterals, 1st Molars, Ca-
Two notes to keep in mind: nines, 2nd Molars
Notes
1. Front to back except Canine
2. Lower before upper except Lat-
erals
6. The primate space in maxillary primary dentition Lateral and Canine
is located between:
7. The primate space in mandibular primary denti- Canine and 1st Molar
tion is located between: [you go one back]
2026
, 300 Dental Anatomy Facts: NBDE Part 1
Study online at https://quizlet.com/_3kjg80
8. The primary spacing for the anterior teeth is the growth of the dental arches
most frequently caused by:
9. The direction of primary enamel rods in the cer- Cervical 1/3 Enamel Rods:
vical third is an _______________ direction. Primary = Occlusal enamel rods
Permanent = Gingival/Apical
The direction of permanent enamel rods in the enamel rods
cervical third is an _______________ direction.
10. The primary molars differ from permanent mo- divergent
lars in that their roots are more ___________.
11. Primary molars lack an identifiable ___________. root trunk
12. Which primary tooth has the smallest facio-lin- Mandibular Central Incisor
gual crown dimension?
2026
, 300 Dental Anatomy Facts: NBDE Part 1
Study online at https://quizlet.com/_3kjg80
13. Which primary and permanent tooth is the most Primary and Permanent
bilaterally symmetrical tooth? Mandibular Central Incisors
14. In delayed resorption of primary incisors, the lingually (shark teeth)
permanent incisors usually erupt ___________.
15. The primary central incisor exhibits a prominent Both facial and lingual
cervical ridge on which surfaces: facial or lingual?
16. From a facial view, the crown of a primary canine Mesio-incisal slope (Mesial Cusp
has a longer slope on the mesial-incisal slope Ridge)
(mesial cusp ridge) or distal-incisal slope (distal
cusp ridge)? Permanent Maxillary 1st Premo-
lar
This is the same for which permanent tooth? All other canines and premolars
DCR > MCR, cusp tip = Mesial
2026
