A. Gingival
B. Oblique
C. Horizontal
D. Transseptal
✅ The correct answer is option A. Gingival.
Oral Histology
82. Dental lamina is active up to_______________?
A. 1 year
B. 2 years
C. 3 years
D. 4 years
✅ The correct answer is option D. 4 years.
83. The key hole, pattern appearance in the cross section is feature of______________?
A. Aprismatic enamel
B. Prismatic enamel
C. Intertubular dentin
D. Intratubular dentin
✅ The correct answer is option B. Prismatic enamel.
84. The shallow furrows on the enamel surface, where stria of Retzius end are known as _______________ ?
A. Cracks
B. Pellicle
C. perikymata
D. Enamel lamellae
✅ The correct answer is option C. perikymata.
85. The type of epithelium lining maxillary sinus is_______________?
A. Simple columnar
B. Pseudo stratified columnar and cilliated
C. Stratified squamous
D. Simple squamous
✅ The correct answer is option B. Pseudo stratified columnar and cilliated.
86. Vonebilers glands open into which papilla_____________?
A. Foliate
B. Filiform
C. Circumvallate
D. Fungiform
✅ The correct answer is option C. Circumvallate.
87. Intermediate cementum is____________?
A. Highly defined cellular zone near cemento – dentinal junction (CDJ)
B. Highly defined fibrillar zone near CDJ
C. Poorly defined zone near cemento-dentinal junction
D. Both a and B
✅ The correct answer is option C. Poorly defined zone near cemento-dentinal junction.
88. Enamel pearls are found in_____________?
A. Occlusal surface of premolars
B. Furcation areas of permanent molars
C. On the incisal edges of incisors
D. None of the above
✅ The correct answer is option B. Furcation areas of permanent molars.
89. 1st formed dental tissue______________?
A. Enamel
B. Dentin
C. Cementum
D. Bone
✅ The correct answer is option B. Dentin.
90. All factors govering dentine permeability EXCEPT_______________?
A. Smear layer
B. Fluid convection
C. Length of dentinal tubules
D. Diffusion coefficient
✅ The correct answer is option B. Fluid convection.