3202. Periodontal ligament is made up of____________?
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A. Type I and Type II collagen

B. Type I collagen

C. Type I and Type III collagen

D. Type I and Type IV collagen

3203. Sclerotic dentin has following features_____________?
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A. Caries susceptible

B. Resistant to caries

C. Insensitive

D. Hypersensitive

3204. Size of pulp chamber____________?
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A. Increases with age

B. Decreases with age

C. Increased in some cases and decreases in some cases

D. None of the above

3206. Regarding teeth which statement is wrong ?
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A. Enamel is harder than dentine

B. Enamel has no cells

C. Odontoblast produce dentin

D. Ameloblast secrete enamel and dentine
3208. The cell free zone in pulp lies____________?
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A. In radicular pulp

B. Above odontoblast

C. In pulp horn

D. Below odontoblast
3209. Mature bone is otherwise called as______________?
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A. woven bone

B. Resorbing bone

C. Lamellar bone

D. Irregular bone

3210. Mandible develops by______________?
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A. Endochondral ossification only

B. Membranous ossification only

C. Both of the above

D. None of the above

3211. Organic portion can be separated from the mineral by_____________?
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A. Devitrification

B. Combustion

C. Incineration/organic chelation

D. Decalcification

3212. The main function of horizontal fibres of P.D ligament is____________?
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A. All of the above

B. Prevent rotation

C. Maintains the mesiodistal width

D. Prevent extrusion

3213. Following is derivative of dental lamina____________?
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A. All of the above

B. Enamel pearls

C. Epithelial rests of Malassez

D. Rests of serrae
3214. Principal fibres of periodontal ligament are attached to_____________?
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A. Cortical bone

B. Lamellar bone

C. Bundle bone

D. Alveolar bone proper

3215. Anchoring fibrills are composed of_____________?
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A. Type IV collagen

B. Type V and VII collagen

C. Type IV and III Collagen

D. Type I and III collagen

3216. The type of epithelium lining maxillary sinus is_______________?
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A. Stratified squamous

B. Simple columnar

C. Pseudo stratified columnar and cilliated

D. Simple squamous

3217. Vitality of pulp depends on________________?
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A. Blood supply

B. Nerve supply

C. Lymphatic supply

D. All of the above

3218. The neutralization of saliva is due to______________?
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A. Bicarbonates

B. Amino acids

C. Mucin

D. Ammonia

3219. Cementicles are found in the_____________?
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A. Cementum

B. Gingiva

C. Periodontal ligament

D. Alveolar bone

3220. Matrix vesicles_______________?
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A. Inhibit mineralization

B. Produce alkaline phosphatase

C. Are found in mantle dentin

D. Contain collagen

3221. The key hole, pattern appearance in the cross section is feature of______________?
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A. Intratubular dentin

B. Prismatic enamel

C. Intertubular dentin

D. Aprismatic enamel

3222. Dead tracts in ground section appears as_____________?
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A. Coarse fibril bundles arranged at right angle to the dentinal surface

B. Black in transmitted light and white in reflected light

C. White in transmitted light and dark in reflected light

D. Dentinal tubules

3223. The plexus of Rashkov is present in which of the following zones in pulp ?
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A. Cell rich zone

B. Cell free zone

C. Odontoblastic zone

D. Pulp core

3224. One of the following statement is unique about circumpulpal dentine______________?
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A. Collagen fibers are oriented perpendicular to DEJ

B. Contain phosphophoryn

C. Requires matrix vesicle for mineralization

D. Vonkorff fibers are present

3225. In adult teeth, the type of dentin present underlying dentin-enamel junction is_______________?
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A. Predentin

B. Mantle dentin

C. Interglobular dentin

D. Tertiary dentin

3226. Inter globular dentin results due to_____________?
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A. Fracture of the dentin

B. Failure of coalescence of calcospherities

C. Disturbance in dentinal tubules

D. Artifact in light microscopy

3229. Chronic periapical inflammation is usually associated with____________?
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A. Hyperplasia of cementum

B. Ankylosis

C. Hypertrophy of cementum

D. Resorption of cementum

3230. In considering the process of eruption, the pre-functional eruptive stage of a tooth begins when the_____________?
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A. Dental lamina begins forming

B. Bud stage begins

C. Cap stage begins

D. Bell stage begins

3231. In multirooted teeth, formation of multiple roots is due to presence of_____________?
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A. Epithelial diaphragm

B. Cell rests of Malassez

C. None of the above

D. Toot bud division or bell stage

3232. Compared to the inter tubular dentin, peritubular dentin is characterized by which of the following ?
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A. Greater content of large collagen fibres

B. Lasser content of inorganic salts

C. Greater stainability

D. greater content of inorganic salts
3233. True about direction of enamel rods______________?
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A. They are almost vertical near the incisal edge (or) cusp tip areas

B. In cervical region of permanent teeth, they deviate in apical direction

C. All of the above

D. They originate at right angle to dentin surface

E. In the cervical third of deciduous crowns they are almost horizontal in direction

3235. Bone at forming stage has_________________?
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A. Odontoblasts & megakaryocyte

B. None of the above

C. Megakaryocytes, osteoblasts, osteoclasts

D. Osteoclasts, osteoblasts, osteoid
3236. The dentin adjacent to the dentinoenamel junction is called the______________?
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A. Mantle dentin

B. Secondary dentin

C. Circumpulpal dentin

D. Predentin

3237. Membrana performative is seen in_________________?
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A. Cap stage

B. Advanced bell stage

C. Bell stage

D. Bud stage

3238. Fibres which continue from bone to ligament are_____________?
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A. Sharpeys fibres

B. Tomes fibres

C. Rays fibres

D. All of the above

3239. In a dried skull, holes on the lingual aspects of the deciduous teeth are called_____________?
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A. Herversian canals

B. Canals of Hirchfeld and Zuckerland

C. Volkmann canals

D. Gubernacular canals
3240. The organic lining of the calcified dentinal tubules is known as_______________?
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A. Lamina densa

B. Lamina lucida

C. Lamina limitans

D. Lamina propria

3241. All of the following is true about dentinal tubules except______________?
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A. Inner pulpal layer contains more dentinal tubules than outer dentin layer

B. The diameter of dentinal tubule is more at pulpal layer than outer layer

C. The diameter of dentin tubules ranges from 5 to 7?m

D. The bonding is more on the inner layer of dentin compared to outer surface

3242. Cells occurring in greatest number in pulp are______________?
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A. Osteoblasts

B. Cementoblasts

C. Fibroblasts

D. Ameloblasts

3243. Order of development of tooth germ is____________?
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A. Bud-cap-bell

B. Cap-bell-bud

C. Bell-cap-bud

D. Bell-bud-cap

3245. Dentino enamel junction is_________________?
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A. Straight

B. Scalloped and the convexities are directed towards enamel

C. Non-scalloped

D. Scalloped and the convexities are directed towards dentin
3246. Intermediate cementum is____________?
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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

3247. The vascular supply of the periodontal ligament is______________?
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A. A net like plexus that runs closer to the cementum than to the bone

B. A net like plexus that runs closer to the bone than to the cementum

C. Greatest in the middle-third of a single rotted tooth

D. Greatest in the middle-third of a multirooted tooth

3248. Which of the areas of the tooth is most sensitive during cavity preparation ?
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A. Dentinoenamel junction

B. Dentin

C. Enamel (Posterior teeth)

D. Enamel (anterior teeth)

3249. The maxillary sinus______________?
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A. Has good drainage in upright position

B. Is fully developed by the age of 8 years

C. Opens in to the inferior meatus of nose

D. Has the 1st molar projecting into its floor
3250. Cementum formation is seen_______________?
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A. After dentin formation

B. Before dentin formation

C. Both are formed at same time

D. None of the above