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.Management Sciences
Category: Oral Histology
The cells that form secondary dentin are_______________?
A. Cementoblasts
B. Fibroblasts
C. Odontoblasts
D. Osteoblasts
Wharton’s duct drains the_______________?
A. Pancreas
B. Parotid
C. Lacrimal gland
D. Submandibular gland
The formation of the dental lamina is initiated by______________?
A. Forebrain
B. Rathke’s pouch
C. Neural crest cells
D. Odontoblasts
The dentin adjacent to the dentinoenamel junction is called the______________?
A. Mantle dentin
B. Circumpulpal dentin
C. Predentin
D. Secondary dentin
Cementum that forms in conjunction with root end formation and eruption_____________?
A. Cellular cementum
B. Acellular cementum
C. Both of the above
D. None of the above
Butt joint in cementoenamel junctions seen is _________% of cases?
A. 10%
B. 30%
C. 60%
D. 90%
Which of the following is not correct ?
A. In case of pituitary gigantis, all sinuses assume a larger volume than normal
B. In chronic infections, the pain may mimic neuralgia of dental origin
C. Malignant lesions of maxillary sinus produce their manifestations in maxillary teeth
D. None of the above
The first sign of future deciduous teeth as a thickening of oral ectoderm appears at about_____________?
A. 25th day of Intra uterine life
B. 34th day of Intra uterine life
C. 56th day of Intra uterine life
D. 20 wks of Intra uterine life
Which of the following statement is false______________?
A. Resorption of roots of deciduous incisors and canines begins on their lingual surfaces
B. Resorption of roots of deciduous molars begins on their inner surfaces
C. Shedding of deciduous teeth is delayed in the absence of their successor teeth
D. None of the above
The striking difference between enamel and other mineralized tissues is______________?
A. Presence of high percentage of organic matrix
B. Presence of incremental lines
C. Enamel has high reparative capacity
D. Most of organic component is lost during mineralization
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