10151. Bundle bone is part of____________?
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A. Longbones

B. Alveolar bone

C. Periodontal ligament

D. Cementum

10152. Aging process affects pulp tissue by_____________?
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A. Increase cellular component at the expenses of fibre component

B. Decreasing the size and shape of pulp tissue and cellular component

C. Increases vascularity of the pulp

D. Decrease the calcific component of the pulp

10153. Approximately how many enamel rods will be present in a maxillary molar ?
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A. 7 million

B. 5 million

C. 9 million

D. 12 million
10154. Intermediate plexus is seen in the____________?
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A. Cementum

B. Dentin

C. Pulp

D. PDL
10155. Remnants of the Hertwigs root sheath are found in____________?
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A. Cementum

B. Periodontal ligament

C. Alveolar bone

D. Gingiva

10156. Which of the following is a rare occurrence______________?
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A. Enamel meet cementum at a point

B. Enamel overlaps cementum

C. Cementum overlaps enamel

D. Both never meet

10157. 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

10158. Vitality of pulp depends on________________?
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A. Blood supply

B. Nerve supply

C. Lymphatic supply

D. All of the above

10159. Anchoring fibrills are composed of_____________?
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A. Type IV collagen

B. Type V and VII collagen

C. Type I and III collagen

D. Type IV and III Collagen

10160. The dental pulp contains nerve endings/receptors for____________?
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A. Pain

B. Proprioception

C. Temperature

D. Pressure

10161. Membrana performative is seen in_________________?
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A. Cap stage

B. Advanced bell stage

C. Bud stage

D. Bell stage
10162. At the CEJ cementum overlaps enamel about____________?
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A. 70 to 75%

B. 60 to 65%

C. 65 to 70%

D. 55 to 60%

10163. Hardness of fully mineralized cementum is_____________?
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A. Equal dentin

B. None of the above

C. More than dentin

D. Less than dentin
10164. The bud, cap and bell stage of the developing tooth are based, on growth of the______________?
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A. Enamel organ

B. Dental papilla

C. Dental sac

D. Stellate reticulum

10165. Enamel spindles are formed by______________?
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A. Hypocalcified rods

B. Ameloblasts

C. Cracks

D. Odontoblasts
10166. The attached apparatus of tooth is composed of______________?
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A. Cementum and periodontal ligament

B. Gingiva and cementum

C. Gingiva, cementum and alveolar bone

D. Peridontal ligament the cementum and the alveolar bone
10167. Propriceptors are seen in all except______________?
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A. TMJ

B. Skeletal muscle

C. None of the above

D. Pulp
10168. The relationship between the pulpal and periodontal tissue complex begins during dental development at_____________?
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A. Adolescent stage

B. Embryonic stage

C. None of the above

D. 5-10 years

10169. 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 dentin tubules ranges from 5 to 7?m

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

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

10170. Cellular cementum is____________?
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A. Less irregular

B. Less calcified than acellular type

C. First formed cementum

D. More calcified than acellular type

10171. Maximum amount of phosphate is seen in_______________?
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A. Dentin

B. Bone

C. Enamel

D. Gingiva

10172. The size of apical foramen of maxillary teeth in adult is______________?
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A. 0.7 mm

B. 0.3 mm

C. 0.4 mm

D. 0.2 mm

10173. The small ridges, perikymata, seen on facial surfaces of canines are the result of_____________?
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A. Hypoplacification

B. Hyperplasia

C. Interstitial development

D. Normal development
10174. Intermediate cemental layer_____________?
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A. Does not exhibit features of either dentin of cementum

B. Represents area of entrapment of hertwigs sheath in dentin or cementum

C. Predominantly seen in apical tow thirds of roots of molars and premolars and is rare in incisors or deciduous teeth

D. All of the above are correct
10175. If cementum is not formed______________?
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A. Exforliation of teeth occur

B. No change occurs

C. Delayed eruption

D. Ankylosis may occur

10176. Butt joint in cementoenamel junctions seen is _________% of cases?
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A. 60%

B. 90%

C. 30%

D. 10%

10177. Mirgration of odontoblasts into dentinal tubules occurs during ________________?
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A. Water irrigation

B. None of the above

C. Cavity preparation

D. Dehydration

10178. Non acidic, nonionic protein which helps in enamel mineralization _______________?
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A. Enamelin

B. Amelogenin

C. Tuftelin

D. Sheathlin

10179. Fluid flow, in or out of the dentinal tubules is proportional to the tuble diameter by______________?
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A. Square of the diameter

B. Third power of the diameter

C. Fourth power of the diameter

D. Sixth power of the diameter

10180. Ionic exchange between enamel surface and environment______________?
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A. Does not take place once enamel surface and invironment

B. Stops after 2 years of eruption

C. Continues through out life

D. Continues till adult life

10181. Neonatal lines are seen in_______________?
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A. Enamel of deciduous incisiors

B. Enamel of premolars

C. Enamel of permanent incisors

D. Dentin of all teeth, as if is formed first

10182. The thinnest epithelium of oral cavity is found in the____________?
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A. Buccal gingiva

B. Sublingual mucosa (floor of mouth)

C. Lingual gingiva

D. Oral surface of lip

10183. Which type of collagen fibers demonstrates Chicken wire configuration ?
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A. Type III

B. Type II

C. Type I

D. Type IV
10184. Membrane coating granules may_____________?
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A. Appear as circular with an amorphous core in keratinized epithelium

B. Originate from golgi system

C. Packed with tonofilaments

D. Helps in adhesion of fully keratinized epithelial cells

10185. Elongated rete pegs are seen in______________?
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A. Floor of the mouth

B. Buccal mucosa

C. Alveolar mucosa

D. Attached gingiva
10186. Keratohyaline granules are found in________________?
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A. St. basale

B. Prickle cell layer

C. St. spinosum

D. St. granulosum
10187. Bulk of lamina propria of the gingiva is made of collagen type_______________?
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A. IV

B. III

C. I

D. II

10188. Gubernacular canal guides the eruption of_____________?
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A. Primary teeth

B. Permanent teeth

C. Both A and B

D. None of the above

10189. The high level clear cell present in the oral epithelium is_____________?
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A. Lymphocyte

B. Merkel cell

C. Melanocyte

D. Langerhans cell
10190. Partially keratinized papilla is_______________?
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A. Foliate

B. Filiform

C. Circumvallate

D. Fungiform

10191. Resorption of dental tissue is caused by_____________?
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A. Odontoblasts

B. Osteoblasts

C. Osteoclasts

D. Odontoclasts
10192. Buccal mucosa is_______________?
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A. Orthokeratinized

B. Parakeratinised

C. Non-keratinized

D. Keratinized

10193. Dehydration of specimen is carried out by____________?
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A. By using 10% formalin

B. By using 5% nitric acid

C. By using increasing percentages of alcohol

D. By using liquid or solid Co2

10194. The enamel of the posterior teeth is thickest at____________?
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A. Middle third of buccal surface

B. Cervical third of buccal surface

C. Middle third of lingual surface

D. Occlusal surface
10195. Which of the following is non-keratinocyte ?
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A. Langhans cell

B. Langerhans cell

C. RBC

D. Grey cell

10196. Stratum germinatum is_______________?
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A. Stratum basale and parabasal spinous cells

B. Stratum spinosum

C. Stratum basale

D. Stratum granulosum

10197. Non keratinized epithelium is found over___________?
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A. Attached gingiva

B. Gingival sulcus

C. Free gingiva

D. Interdental papilla

10198. The position of mucogingival line____________________?
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A. None of the above

B. Constant throughout the life

C. Shifts apically with age

D. Shifts coronally with age

10199. Calcified tissue is absent in______________?
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A. Enamel

B. Dentin

C. Pulp

D. Cementum

10200. Hammock ligament is present_______________?
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A. Between hamular notch and mandible

B. As a part of deep cervical fascia

C. In apical area of a tooth

D. Between temporal and sphenoid bone