A. Cortical
B. Cancellous
C. Osteophytic
D. Exophytic
✅ The correct answer is option A. Cortical.
Oral Histology
72. If a child’s teeth do not form, this would primarily effect the growth of the_____________?
A. Basal bone
B. Whole face
C. Mandible
D. Alveolar bone
✅ The correct answer is option D. Alveolar bone.
73. The most abundant group of fibres in the PDL are_____________?
A. Trans-septal
B. Horizontal
C. Oblique
D. Apical
✅ The correct answer is option C. Oblique.
74. Chronological hypoplasia is_____________?
A. Hypoplasia of local origin
B. Hypoplasia of systemic origin
C. Hypoplasia of hereditary origin
D. None of the above
✅ The correct answer is option B. Hypoplasia of systemic origin.
75. The type of bone present in the labial area of anterior teeth is_______________?
A. Cortical
B. Cancellous
C. Osteophytics
D. Exophytic
✅ The correct answer is option A. Cortical.
76. Shape of enamel rod is______________?
A. Key hole or paddle shaped
B. Square
C. Round
D. None of the above
✅ The correct answer is option A. Key hole or paddle shaped.
77. All of the following is lined by stratified squamous epithelium, except ?
A. Lips
B. Tongue
C. Roof of the soft palate
D. Oropharynx
✅ The correct answer is option C. Roof of the soft palate.
78. Acid neutralizing substance in saliva_____________?
A. NH3
B. Carbonate
C. Bicarbonate
D. Chlorides
✅ The correct answer is option C. Bicarbonate.
79. Mature bone is otherwise called as______________?
A. woven bone
B. Irregular bone
C. Lamellar bone
D. Resorbing bone
✅ The correct answer is option C. Lamellar bone.
80. Epithelial attachment is_____________?
A. Attachment of ameloblasts to the tooth
B. Microscopically it resembles basal lamina
C. Derived from secondary attachment epithelium
D. All of the above
✅ The correct answer is option D. All of the above.