MDS PREP
The cricothyroid artery is a branch of the
1. occipital artery
2. superior thyroid artery
3. facial artery
4. superficial temporal artery
Anatomy
Answer: 2
The cricothyroid artery is a branch of the superior thyroid artery
The average overall length of the permanent maxillary central incisor is
1. 14.5mm
2. 18.0 mm
3. 22.5 mm
4. 30 mm
Dental Anatomy
Answer: 3
The average overall length of the permanent maxillary central incisor is 22.5 mm
Which of the following permanent maxillary molar teeth normally has four root canals?
1. First molar
2. Second molar
3. Third molar
4. None of theabove
Dental Anatomy
Answer: 1
permanent maxillary First molar teeth normally has four root canals
The nerve to masseter passes
1. deep to the medial pterygoid muscle
2. posterior to temporomandibular joint
3. superior to zygomatic arch to enter the muscle on its medial surface
4. through the mandibular notch to enter the muscle on its medial surface
Anatomy
Answer: 2
The nerve to masseter passes posterior to temporomandibular joint
The most constant and valuable trait to differentiate among maxillary first second and third molars is the
1. comparative size of the cusp of Carabelli
2. height of cusps
3. depth of central fossae
4. relative position of the distolingual groove
Dental Anatomy
Answer: 3
The most constant and valuable trait to differentiate among maxillary first second and third molars is the depth of central fossae
The artery chiefly responsible for blood supply to the mandible is 1. inferior alveolar artery 2.sphenomandibular artery 3. mylohyoid artery 4.stylomandibular artery
Anatomy Answer: 1The artery chiefly responsible for blood supply to the mandible is inferior alveolar artery
Malformation of the coronal portion of the permanent anterior teeth is most frequently encountered in the
1. maxillary central incisor
2. maxillary lateral incisor
3. maxillary canine
4. mandibular lateral incisor
Dental Anatomy
Answer: 2
Maxillary lateral incisor agenesis:
This is the most common congenital absence of a permanent tooth in the maxillary
anterior region, accounting for about 20% of all dental anomalies.
Coronal developmental invagination (DI):This is a common anomaly in the
permanent maxillary lateral incisor, usually appearing as an accentuation of the
lingual pit.It's often bilateral.
Peg-shaped crown:This is a common alteration in the maxillary lateral incisor.
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