Which of the following describes the anatomic progression from mandibular first to third molars? 1. The roots become more divergent. 2. The crowns and roots become longer. 3. The crowns and roots become shorter. 4. The crowns become longer, but the roots get shorter.
Dental AnatomyAnswer: 3
The anatomy of the mesial surface of which of the following teeth is MOST likely to cause difficulty in restorative dentistry? 1. Maxillary central incisor 2. Maxillary first premolar 3. Maxillary second premolar 4. Mandibular first molar
Dental AnatomyAnswer: 2
On examination of a 7 years old child , only six permanent teeth are p resent. Which of the following is
most likely to be true?
1. Four of the permanent teeth are molars
2. The child has a delayed eruption
3. At least tour of the teeth are perma nent incisors
4. Three permanent teeth are mandibular and the other three are maxillary
Dental AnatomyAnswer: 1
The third molars are usually expected to erupt at
1. 8 - l2 years
2. 17-25 years
3. l6 years
4. 12 - l5 years
Dental AnatomyAnswer: 2
Considering root morphology, which of the following teeth MOST readily lend themselves to rotation during extraction? 1. Maxillary central incisor 2. Mandibular central incisor 3. Mandibular lateral incisor 4. Mandibular canine
Dental AnatomyAnswer: 1
Which of the following maxillary anterior teeth has a mesiodistal crown width that is greater than the incisocervical height? 1. Primary central incisor 2. Primary lateral incisor 3. Central incisor 4. Lateral incisor
Dental AnatomyAnswer: 1
How many pulp horns are usually present in a typical primary mandibular first molar? 1. 1 2. 2 3. 3 4. 4
Dental AnatomyAnswer: 4
The last permanent incisor to erupt are most likely the
1. mandibular centrals
2. maxilary laterals
3. maxillary third molars
4. maxillary centrals
