MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 370 Mcqs, each offering curated multiple-choice questions to sharpen your Medical Subjects knowledge and support exam preparation. Choose a topic below to get started.
| 251. |
If cementum is not formed______________? |
| A. | Ankylosis may occur |
| B. | Exforliation of teeth occur |
| C. | Delayed eruption |
| D. | No change occurs |
| Answer» C. Delayed eruption | |
| 252. |
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 |
| Answer» E. | |
| 253. |
Hunter Schreger band are____________? |
| A. | Dark and light bands of enamel seen in longitudinal ground section |
| B. | Dark and light bands of enamel seen in horizontal ground section |
| C. | Dark and light brands of dentin seen in longitudinal section |
| D. | Dark and light bands of dentin seen in horizontal |
| Answer» B. Dark and light bands of enamel seen in horizontal ground section | |
| 254. |
Histologically the dental pulp most closely resembles______________? |
| A. | Nerve tissue |
| B. | Vascular tissue |
| C. | Granulation tissue |
| D. | Loose connective tissue |
| Answer» E. | |
| 255. |
High levels of albumin is present in____________? |
| A. | Inner enamel epithelium |
| B. | Outer enamel epithelium |
| C. | Stellate reticulum |
| D. | Stratum intermedium |
| Answer» D. Stratum intermedium | |
| 256. |
Hertwig’s epithelial root sheath is made up of_______________? |
| A. | Outer and inner enamel epithelium |
| B. | Stratum intermedium |
| C. | Stellate reticulum |
| D. | Hyaline layer of Hopewell-smill |
| Answer» B. Stratum intermedium | |
| 257. |
Hertwig’s root sheath is formed from______________? |
| A. | Stratum inter medium |
| B. | Stellate reticulum |
| C. | Outer enamel epithelium |
| D. | Cervical loop |
| Answer» E. | |
| 258. |
Haversion systems (osteons) are found primarily in the_________________? |
| A. | Spongy bone |
| B. | Periosteum |
| C. | Alveolar bone proper |
| D. | Endosteum |
| Answer» D. Endosteum | |
| 259. |
Hardness of fully mineralized cementum is_____________? |
| A. | Less than dentin |
| B. | More than dentin |
| C. | Equal dentin |
| D. | None of the above |
| Answer» B. More than dentin | |
| 260. |
Hammock ligament is present_______________? |
| A. | Between temporal and sphenoid bone |
| B. | Between hamular notch and mandible |
| C. | In apical area of a tooth |
| D. | As a part of deep cervical fascia |
| Answer» E. | |
| 261. |
Gubernacular canal guides the eruption of_____________? |
| A. | Primary teeth |
| B. | Permanent teeth |
| C. | Both A and B |
| D. | None of the above |
| Answer» C. Both A and B | |
| 262. |
Gubernacular canal and gubernacular cord are seen in relation to____________? |
| A. | Permanent teeth |
| B. | Deciduous teeth |
| C. | Succedaneous teeth |
| D. | None of the above |
| Answer» D. None of the above | |
| 263. |
Group of fibres, which resist the masticatory forces___________? |
| A. | Dentogingival |
| B. | Transeptal |
| C. | Oblique |
| D. | Horizontal |
| Answer» D. Horizontal | |
| 264. |
Functional importance of maxillary sinus is______________? |
| A. | Lightening of skull weight and production of bactericidal lysozyme to the nasal cavity |
| B. | Protects the brain against exposure to cold air by arresting air in sinus temporarily |
| C. | Resonance of voice and enhancement of faciocranial resistance to mechanical shock |
| D. | All of the above |
| Answer» E. | |
| 265. |
Frozen sections can be used for the demonstration of_____________? |
| A. | Fat |
| B. | Mucin |
| C. | Cartilage |
| D. | Iron |
| Answer» B. Mucin | |
| 266. |
Formula of hydroxyapatite crystal is____________? |
| A. | Ca3 (Po4)2 CaCo3 |
| B. | 3Ca (Po4)2 Ca(OH)2 |
| C. | CaPo4 Ca(OH)2 |
| D. | None of the above |
| Answer» C. CaPo4 Ca(OH)2 | |
| 267. |
Formation of dentin by odontoblasts begins in_______________? |
| A. | Morphogenic stage |
| B. | Organizing stage |
| C. | Desmolytic stage |
| D. | Formative stage |
| Answer» C. Desmolytic stage | |
| 268. |
Following is not an external manifestation of enamel________________? |
| A. | Enamel tufts |
| B. | Enamel lamella |
| C. | Incremental lines of enamel |
| D. | Enamel cuticle |
| Answer» B. Enamel lamella | |
| 269. |
Following is derivative of dental lamina____________? |
| A. | Epithelial rests of Malassez |
| B. | Enamel pearls |
| C. | Rests of serrae |
| D. | All of the above |
| Answer» D. All of the above | |
| 270. |
Fluid flow, in or out of the dentinal tubules is proportional to the tuble diameter by______________? |
| A. | Third power of the diameter |
| B. | Sixth power of the diameter |
| C. | Square of the diameter |
| D. | Fourth power of the diameter |
| Answer» E. | |
| 271. |
First appearance of tooth formation occurs in____________? |
| A. | 6th week IU |
| B. | 2nd week IU |
| C. | 9th week IU |
| D. | 4th week IU |
| Answer» B. 2nd week IU | |
| 272. |
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 |
| Answer» B. Tome’s fibres | |
| 273. |
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 |
| Answer» B. Tome’s fibres | |
| 274. |
Fibres of periodontal ligament embedded in the bone are_____________? |
| A. | Sharpey’s fibres |
| B. | Tomes fibres |
| C. | Elastic fibres |
| D. | Ray’s fibres |
| Answer» B. Tomes fibres | |
| 275. |
Extracted teeth should be preserved in_____________? |
| A. | Saline |
| B. | Xylene |
| C. | 10% Formalin |
| D. | 10% alcohol |
| Answer» D. 10% alcohol | |
| 276. |
Excess deposition of calcium in the dentinal tubules is referred to as______________? |
| A. | Sclerotic dentin |
| B. | Mantal dentin |
| C. | Interglobular dentin |
| D. | Intertubular dentin |
| Answer» B. Mantal dentin | |
| 277. |
Epithelium of the inner surface of the gingival sulcus______________? |
| A. | Has no rete pegs |
| B. | Has prominent rete pegs |
| C. | Is keratinized |
| D. | Is para-keratinized |
| Answer» B. Has prominent rete pegs | |
| 278. |
Epithelium of oral mucous membrane is_______________? |
| A. | Keratinized |
| B. | Non keratinized |
| C. | Ortho, para and non keratinized |
| D. | Only para keratinized |
| Answer» D. Only para keratinized | |
| 279. |
Epithelial cells which ultimately keratinize are known as_____________? |
| A. | Keratinizing cells |
| B. | Melanocytes |
| C. | Non-Keratinizing cells |
| D. | Clear cells |
| Answer» B. Melanocytes | |
| 280. |
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 |
| Answer» E. | |
| 281. |
Epithelial attachment is derived from____________? |
| A. | Reduced enamel epithelium |
| B. | Dental papilla |
| C. | Inner enamel epithelium |
| D. | Dental sac |
| Answer» B. Dental papilla | |
| 282. |
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 |
| Answer» C. On the incisal edges of incisors | |
| 283. |
Enamel tufts are_______________? |
| A. | Thin tuft like structure extending from enamel surface of dentin enamel junction |
| B. | Tuft like structure arising from dentin-enamel junction towards enamel surface |
| C. | Odontoblastic processes extending into enamel |
| D. | None of the above |
| Answer» C. Odontoblastic processes extending into enamel | |
| 284. |
Enamel spindles are formed by______________? |
| A. | Cracks |
| B. | Ameloblasts |
| C. | Odontoblasts |
| D. | Hypocalcified rods |
| Answer» D. Hypocalcified rods | |
| 285. |
Enamel rods at the cervical area at the occlusal edge and incisal lip in permanent teeth are______________? |
| A. | Straight |
| B. | Shallow |
| C. | Bent |
| D. | Curved |
| Answer» D. Curved | |
| 286. |
Enamel is laid down______________? |
| A. | Mainly by odontoblasts |
| B. | Mainly by ameloblasts |
| C. | Only on odontoblasts |
| D. | Only by ameloblasts |
| Answer» E. | |
| 287. |
Enamel can act in a sense like a_______________? |
| A. | Permeable membrane |
| B. | Impermeable membrane |
| C. | Semipermeable membrane |
| D. | Infrapermeable membrane |
| Answer» D. Infrapermeable membrane | |
| 288. |
Elongated rete pegs are seen in______________? |
| A. | Alveolar mucosa |
| B. | Floor of the mouth |
| C. | Attached gingiva |
| D. | Buccal mucosa |
| Answer» D. Buccal mucosa | |
| 289. |
Ectodermal cells in tooth bud are responsible for_______________? |
| A. | Determination of shape of crown and root |
| B. | Formation of periodontal ligament |
| C. | Formation of cementum |
| D. | Formation of pulp |
| Answer» B. Formation of periodontal ligament | |
| 290. |
Dystrophic calcifiaction is seen most commonly in which of the following oral tissues__________? |
| A. | Enamel |
| B. | Pulp |
| C. | Dentin |
| D. | Periodontal ligament |
| Answer» C. Dentin | |
| 291. |
During the formation of primary teeth_______________? |
| A. | Enamel forms more cervically than dentin |
| B. | Enamel forms faster than dentin |
| C. | Dentin forms faster than enamel |
| D. | Processes of their cells remain in content with each other |
| Answer» D. Processes of their cells remain in content with each other | |
| 292. |
Disturbance during the morphodifferentition stage of tooth development will result in______________? |
| A. | Change in number of teeth |
| B. | Ameloblastoma |
| C. | Change in form and shape of the teeth |
| D. | Hypoplasia |
| Answer» D. Hypoplasia | |
| 293. |
Difference between the skin and mucosa of cheek is_______________? |
| A. | Thin lamina and non keratinized mucosa of cheek |
| B. | Keratinized mucosa of cheek |
| C. | Rete pegs |
| D. | Thick lamina propria on skin of cheek |
| Answer» B. Keratinized mucosa of cheek | |
| 294. |
Development of supporting tissues of the tooth is initiated by____________? |
| A. | Cells of dental follicle |
| B. | Cells of odontogenic layer |
| C. | Cementoblasts |
| D. | Cells of the gingiva |
| Answer» B. Cells of odontogenic layer | |
| 295. |
Dentinogenesis by odontoblasts first begins at_____________? |
| A. | Pulpal end |
| B. | Cusp tip |
| C. | Tooth bud stage |
| D. | Cervical area |
| Answer» C. Tooth bud stage | |
| 296. |
Dentino enamel junction is_________________? |
| A. | Non-scalloped |
| B. | Straight |
| C. | Scalloped and the convexities are directed towards dentin |
| D. | Scalloped and the convexities are directed towards enamel |
| Answer» D. Scalloped and the convexities are directed towards enamel | |
| 297. |
Dentinal tubules are______________? |
| A. | Concave |
| B. | Straight |
| C. | S0shaped |
| D. | None of the above |
| Answer» D. None of the above | |
| 298. |
Dentinal tubules are calcified in_______________? |
| A. | Sclerotic dentin |
| B. | Primary dentin |
| C. | Secondary dentin |
| D. | Interglobular dentin |
| Answer» B. Primary dentin | |
| 299. |
Dentin formed through out the life is______________? |
| A. | Sclerotic dentin |
| B. | Secondary dentin |
| C. | Reparative dentin |
| D. | All of the above |
| Answer» C. Reparative dentin | |
| 300. |
Dental papilla gives rise to_____________? |
| A. | Pulp only |
| B. | Pulp & Dentin |
| C. | Pulp & Periodontal ligament |
| D. | All of the above |
| Answer» C. Pulp & Periodontal ligament | |