MDS PREP
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
Which of the following is TRUE regarding the attachment of the mylohyoid muscle?
1) It attaches superiorly at the lateral border of the mandible and inferiorly at the body of the hyoid.
2) It attaches superiorly at the medial border of the mandible and inferiorly at the lesser horn of the hyoid
3) It attaches superiorly at the medial border of the mandible and inferiorly at the greater horn of the hyoid
4) It attaches superiorly at the medial border of the mandible and inferiorly at the body of the hyoid
Anatomy Answer: 4
It attaches superiorly at the medial border of the mandible and inferiorly at the body of the hyoid
The mandibular 1st molar is supplied by:
1. Inferior alveolar nerve only
2. Long buccal nerve only
3. A and B
4. Mental and inferior alveolar nerve
Anatomy
Answer: 3
The mandibular 1st molar is supplied by Inferior alveolar nerve and long Buccal Nerve
Zygomaticotemporal nerve is a branch
1. Maxillary nerve
2. Facial nerve
3. Mandibular nerve
4. Nasociliary nerve
Anatomy
Answer: 1
Branches of Maxillary nerve are
1. Middle meningeal n.
2. zygomatic n. : zygomaticofacial, zygomaticotemporal
3.pterygopatine branches : orbital, post. sup. lat. nasal , medial septal, greater palatine, middle palatine , post. palatine
4. post. sup alveolar
5. Infraorbital
middle sup. alveolar
anterior sup. alveolar
6. Terminal
lat. nasal
inf. palpebral
sup. labialis
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
Primary teeth begin to calcify between the ________ and ________months in
utero.
1) first; second
2) second; fourth
3) fourth; sixth
4) sixth; eighth
The primary teeth begin to form in utero at about six weeks. Hard tissue
formation occurs in all primary teeth by the 18th week in utero. 3. The
permanent teeth begin to develop at approximately four months of age in utero.
Maxillary and mandibular first molars begin to calcify at birth.
Foramen ovale is placed _____ to foramen rotundum:
1. Anteromedian.
2. Anterolateral.
3. Posteromedian.
4. Posterolateral
Anatomy Answer: 4
the foramen ovale and foramen rotundum are both openings in the sphenoid bone. The foramen ovale is located posterior and lateral to the foramen rotundum. The foramen rotundum transmits the maxillary nerve (V2), while the foramen ovale transmits the mandibular nerve (V3) and the accessory meningeal artery.