A. Same as permanent teeth
B. Inclined in an apical direction in the cervical third of crown
C. Inclined in an occlusal direction in the cervical third of crown
D. None of the above
Related Mcqs:
- While charting the dentition of a child, the pedodontist finds that the following teeth are present in all the four quadrants; permanent central incisor , permanent lateral incisor , decidous cuspid , decidous first molar, decidous 2nd molar and permanent 1st molar. The eruptive pattern may be considered most nearly normal for a child aged_____________?
A. 3-6 years
B. 7-10 years
C. 11-14 years
D. 15- 18 years - Ratio of diameter of enamel rods in the DEJ to the enamel surface is______________?
A. 1:4
B. 1:1
C. 1:2
D. 2:1 - Enamel rods at the cervical area at the occlusal edge and incisal lip in permanent teeth are______________?
A. Straight
B. Shallow
C. Bent
D. Curved - Length of enamel rods is_____________?
A. Greater than the thickness of enamel
B. Less than the thickness of enamel
C. Equal to the thickness of enimal
D. None of the above - Transverse ridge is prominent on occlusal surface of which of the following decidous teeth ?
A. Mandibular first molar
B. Maxillary first molar
C. Mandibular second molar
D. Maxillary second molar - Among the difference between teeth in the decidous and the permanent dentition is that_____________?
A. Buccal surfaces of the permanent molars are flatter
B. Cervical ridges are more pronounced in permanent molars
C. Root trunks of decidous teeth are larger compared with their overall root lengths
D. Crowns of decidous incisors are wider mesiodistally than their cervico incisal lengths - A 20yr old patient reports with multiple swelling of the jaws. Clinical examination reveals multiple hard swellings involving the jaws and intra orally several missing teeth are noticed. Panoramic radiograph reveals multiple radio opaque lesions in the maxilla and the mandible with multiple impacted teeth and supernumerary teeth indicative of Gardeners syndrome: The above mentioned condition is______________?
A. Autosomal dominant disease
B. Autosomal recessive disorder
C. X-linked disease
D. A syndrome of unknown cause - Interwining of the enamel rods at the cusp timps and the incisal edges of a tooth is called______________?
A. Enamel spindles
B. Gnarled enamel
C. Incremental lies of woven
D. Incremental lines of retzius - Approximately how many enamel rods will be present in a maxillary molar ?
A. 5 million
B. 7 million
C. 9 million
D. 12 million - On microscopic examination enamel rods have___________?
A. Key hole appearance in cross section
B. Paddle appearance in cross section
C. Lanullate appearance in cross-section
D. None of the above
