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.Management Sciences
Category: Oral Histology
The formative cells of which of the following dental tissues disappear once tissue is formed___________?
A. Enamel
B. Dentin
C. Periodontal ligament
D. Cementum
Long connective tissue papillae and keratinized epithelia are a feature of these parts of oral mucosa____________?
A. gingiva and alveolar mucosa
B. Hard palate and gingiva
C. Buccal andalveolar mucosa
D. Hard and soft palate
S shape of dentinal tubules is due to______________?
A. Incremental deposition
B. Peritubular dentin
C. Crowding of odontoblasts
D. Due to excess amount of organic component
In multirooted teeth, formation of multiple roots is due to presence of_____________?
A. Epithelial diaphragm
B. Cell rests of Malassez
C. Toot bud division or bell stage
D. None of the above
Bundle bone is part of____________?
A. Periodontal ligament
B. Alveolar bone
C. Cementum
D. Longbones
Accentuated incremental lines in dentin due to disturbances in matrix and mineralization process is_____________?
A. Incremental lines of retzius
B. Incremental lines of vonebner
C. Contour lines of owen
D. None of the above
Which of the following factors are primarily contributory to the shedding of deciduous tooth ?
A. Hydrostatic
B. Vascular pressure
C. Oncotic pressure
D. Masticatory pressure
Fibres which continue from bone to ligament are_____________?
A. Sharpey’s fibres
B. Tome’s fibres
C. Ray’s fibres
D. All of the above
Reversal lines which may be seen on the cribriform plate (alveolar bone proper) of the alveolar process indicate the cessation of____________?
A. Osteoblastic activity
B. Osteoclastic activity
C. Myeloid activity
D. Healing activity
In considering the process of eruption, the pre-functional eruptive stage of a tooth begins when the_____________?
A. Bud stage begins
B. Cap stage begins
C. Bell stage begins
D. Dental lamina begins forming
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