NBDE I -- Dental Anatomy and Occlusion
Questions and Answers A+ Guide
Which of the following is NOT a characteristic of primary teeth
when compared to permanent teeth? - correct
answers✅✅posterior primary teeth are thinner M/D and shorter
I/G than their successors
primary teeth have a less prominent cervical ridge
Moving the mandible from maximum intercuspation (MI) to
maximum retruded contact position usually results in which of the
following? - correct answers✅✅increased horizontal overlap
decreased vertical overlap
increased occlusal vertical dimension
The permanent anterior tooth whose pulp chamber has the
greatest faciolingual dimension is the - correct
answers✅✅maxillary canine
Each of the following dental anomalies is likely to affect anterior
teeth EXCEPT one. Which is the EXCEPTION? - correct
answers✅✅concrescence
On the crown of a maxillary first premolar, what is the total
number of functional inclined planes normally associated with the
buccal cusp? - correct answers✅✅2
As a group, the permanent mandibular incisors exhibit root
outlines in a mid-root cross section which are - correct
answers✅✅ovoid, wider faciolingually than mesiodistally
,NBDE I -- Dental Anatomy and Occlusion
Questions and Answers A+ Guide
Which of the following can negatively affect the self cleaning
quality of dentition in normal alignment? - correct
answers✅✅too great of contour of the buccocervical ridge
Which of the following anatomical features are regularly found on
both the primary mandibular first and second molars? - correct
answers✅✅both have 2 roots
Which is/are the main differences in tooth shape/size between
primary and permanent teeth? - correct
answers✅✅permanent anterior teeth are proprotionately longer
I-G and shorter MD
primary teeth are flatter on the buccal and lingual surfaces
The root of the mandibular first premolar normally - correct
answers✅✅is shorter than the root of the mandibular second
premolar
Which of the following does the crown of the mandibular first
premolar normally exhibit when viewed from the facial aspect? -
correct answers✅✅mesially offset cusp tip
prominent facial ridge
developmental depressions
, NBDE I -- Dental Anatomy and Occlusion
Questions and Answers A+ Guide
On the crown of a permanent mandibular first molar, the cusp
that is second largest in bulk is the - correct answers✅✅ML
cusp
Which of the following proximal root surfaces on a permanent
mandibular first molar is most likely to be convex? - correct
answers✅✅distal surface of the distal root
When compared to the presence of supernumerary teeth, partial
anodontia normally - correct answers✅✅occurs in the same
areas of the mouth
The occlusal surface of a primary mandibular first molar normally
exhibits which of the following? - correct answers✅✅two pits
and 3 primary grooves
As any pair of adjacent teeth in the same arch is viewed from the
facial or lingual aspect, the triangular area gingival to the contact
area is known as - correct answers✅✅either the interproximal
space or gingival embrasure
Which of the following dental anomalies is associated with a
higher risk of pulpal inflammation? - correct answers✅✅dens
in dente
Questions and Answers A+ Guide
Which of the following is NOT a characteristic of primary teeth
when compared to permanent teeth? - correct
answers✅✅posterior primary teeth are thinner M/D and shorter
I/G than their successors
primary teeth have a less prominent cervical ridge
Moving the mandible from maximum intercuspation (MI) to
maximum retruded contact position usually results in which of the
following? - correct answers✅✅increased horizontal overlap
decreased vertical overlap
increased occlusal vertical dimension
The permanent anterior tooth whose pulp chamber has the
greatest faciolingual dimension is the - correct
answers✅✅maxillary canine
Each of the following dental anomalies is likely to affect anterior
teeth EXCEPT one. Which is the EXCEPTION? - correct
answers✅✅concrescence
On the crown of a maxillary first premolar, what is the total
number of functional inclined planes normally associated with the
buccal cusp? - correct answers✅✅2
As a group, the permanent mandibular incisors exhibit root
outlines in a mid-root cross section which are - correct
answers✅✅ovoid, wider faciolingually than mesiodistally
,NBDE I -- Dental Anatomy and Occlusion
Questions and Answers A+ Guide
Which of the following can negatively affect the self cleaning
quality of dentition in normal alignment? - correct
answers✅✅too great of contour of the buccocervical ridge
Which of the following anatomical features are regularly found on
both the primary mandibular first and second molars? - correct
answers✅✅both have 2 roots
Which is/are the main differences in tooth shape/size between
primary and permanent teeth? - correct
answers✅✅permanent anterior teeth are proprotionately longer
I-G and shorter MD
primary teeth are flatter on the buccal and lingual surfaces
The root of the mandibular first premolar normally - correct
answers✅✅is shorter than the root of the mandibular second
premolar
Which of the following does the crown of the mandibular first
premolar normally exhibit when viewed from the facial aspect? -
correct answers✅✅mesially offset cusp tip
prominent facial ridge
developmental depressions
, NBDE I -- Dental Anatomy and Occlusion
Questions and Answers A+ Guide
On the crown of a permanent mandibular first molar, the cusp
that is second largest in bulk is the - correct answers✅✅ML
cusp
Which of the following proximal root surfaces on a permanent
mandibular first molar is most likely to be convex? - correct
answers✅✅distal surface of the distal root
When compared to the presence of supernumerary teeth, partial
anodontia normally - correct answers✅✅occurs in the same
areas of the mouth
The occlusal surface of a primary mandibular first molar normally
exhibits which of the following? - correct answers✅✅two pits
and 3 primary grooves
As any pair of adjacent teeth in the same arch is viewed from the
facial or lingual aspect, the triangular area gingival to the contact
area is known as - correct answers✅✅either the interproximal
space or gingival embrasure
Which of the following dental anomalies is associated with a
higher risk of pulpal inflammation? - correct answers✅✅dens
in dente
