MDS PREP
In an average child the mixed dentition period is from
1. 10 years to 25 years
2. 4 yrs to 12 yrs
3. 8 yrs to 17 yrs
4. 6 yrs to 13 years
Dental Anatomy
Answer: 4
In an average child the mixed dentition period is from 6 yrs to 13 y
A mandibular primate space is usually found in the primary dentition between
1. first and second molars
2. central and lateral incisors
3. lateral incisor and canine
4. canine and first molar
Dental Anatomy
Answer: 4
A mandibular primate space is usually found in the primary dentition between canine and first molar
The largest and longest root canal of the maxillary second molar is the
1. lingual
2. mesiobuccal
3. distobuccal
4. distal
Dental Anatomy
Answer: 1
The largest and longest root canal of the maxillary second molar is the lingual
The primary mandibular central incisors usually erupt at
1. 6-8 months
2. 2 years
3. 10 - 13 months
4. 52 - 72 weeks
Dental Anatomy
Answer: 1
The primary mandibular central incisors usually erupt at 6-8 months
The permanent anterior tooth most often missing congenitally is the
1. maxillary central incisor
2. mandibular central incisors
3. mandibular lateral incisors
4. maxillary lateral incisors
Dental Anatomy
Answer: 4
lateral incisor is most often missing congenitally
When extracting a primary maxillary incisor in which the root has been partially resorbed because of pres sure from its developing succe daneous tooth, which aspect of the remaining primary root will usually be longest and attached most securely to the gingiva?
1. Facial
2. Mesial
3. Lingual
4. Distal
Dental Anatomy
Answer: 1
In the case of primary teeth, the roots are often resorbed as the permanent teeth develop. The facial aspect of the root tends to be the last area to undergo resorption due to its position and the way the succedaneous tooth exerts pressure. The facial root surface is generally more stable and remains attached to the gingiva longer than the other aspects, making it the longest and most securely attached during extraction.
The first teeth to erupt in the dental arches of the human being are the, primary
1. mandibular cuspids
2. maxillary central incisors.
3. mandibular central incisors
4. maxillary first molars
Dental Anatomy
Answer: 3
The first teeth to erupt in the dental arches of the human being are the, primary mandibular central incisors
9 months of age, is the usual eruption time for
1. primary mandibular canines
2. primary maxillary canines
3. primary maxillary first molars
4. primary lower lateral incisors
Dental Anatomy
Answer: 4
9 months of age, is the usual eruption time for primary lower lateral incis