medical MCQs – Page 151

Practise multiple-choice questions from medical for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

medical Mcqs

1. oral anatomy 2. microbiology 3. oral pathology and medicine 4. physiology 5. biochemistry 6. general anatomy 7. dental materials 8. pharmacology 9. pathology 10. oral histology

3001. Which of the following is true___________?
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A. Plexus of Rashkow or parietal layers of nerves is formed by network of peripheral axons located adjacent to cell rich zone

B. Pulpal pressure is highest among body tissues

C. All of the above

D. Majority of nerve that enter the pulp are non myelinated and are sympathetic in nature

3002. Which glass ionomer cement develops early resistance to water intake on setting ?
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A. Reinforced auto care glass ionomer cement

B. Ceramic reinforced glass ionomer cement

C. Resin modified glass ionomer cement

D. Compomer

3003. Which of the following do polycarboxylate and GIC have in common ?
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A. Polysiloxane

B. Polyacrylic acid

C. Phosphoric acid

D. Ion leachable glass

3004. Which of the following is true?
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A. Maxillary sinus communicates with environment through middle meatus and nasal vestibule

B. All of the above

C. Maxillary sinus is four- sided pyramid

D. In most of the cases, the main ostium is present in posterior third of hiatus semilunar

3005. Normal interincisal distance is____________________?
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A. 38 mm

B. 48 mm

C. 28 mm

D. 58 mm

3006. Maximum fluoride content is seen in_____________?
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A. Dental cementum

B. Dental pulp

C. Enamel

D. Dentin

3007. The enamel has no capacity of self repair because______________?
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A. It has only a small percent of organic content

B. It is essentially a keratin tissue and has no blood vessels

C. It has no direct connection with the active cells of the dental pulp

D. Its formative cells are lost once it is completely formed

3008. Fibres of periodontal ligament embedded in the bone are_____________?
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A. Sharpeys fibres

B. Rays fibres

C. Tomes fibres

D. Elastic fibres

3009. Collagen molecule exhibits all of the following features except_____________?
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A. Triple pleated sheath

B. Mostly contains glycine residues

C. Exhibit cross striations at 64 ?m

D. Intracellular in nature

3010. Secondary cementum is generally confined to_____________?
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A. No secondary cementum forms

B. Apical third of the root

C. Cervical third of the root

D. Middle third of the root

3011. Alveolar process helps in providing_____________?
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A. Support and retention to the complete denture

B. Boundaries for the tongue during speech

C. Attachment to muscles of facial expression

D. Support the natural teeth

3012. At the CEJ cementum overlaps enamel about____________?
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A. 65 to 70%

B. 55 to 60%

C. 70 to 75%

D. 60 to 65%

3013. Intermediate cemental layer_____________?
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A. Represents area of entrapment of hertwigs sheath in dentin or cementum

B. All of the above are correct

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

D. Does not exhibit features of either dentin of cementum

3014. The attached apparatus of tooth is composed of______________?
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A. Gingiva and cementum

B. Cementum and periodontal ligament

C. Peridontal ligament the cementum and the alveolar bone

D. Gingiva, cementum and alveolar bone

3015. Reestablishing the former outline of the root surface is_____________?
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A. Anatomic repair

B. Hyperplasia

C. Functional repair

D. Physiological repair

3016. Which dental tissue doesnt contain nerves ?
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A. Bone

B. Cementum

C. Pulp

D. Dentin

3017. During the formation of primary teeth_______________?
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A. Enamel forms faster than dentin

B. Enamel forms more cervically than dentin

C. Dentin forms faster than enamel

D. Processes of their cells remain in content with each other

3018. Basic metabolic unit of bone is_______________?
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A. Osteon

B. Osteoclast

C. Osteocyte

D. Osteoblast

3019. The microhardness of dentin is about____________?
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A. 1/2 that of enamel

B. 1/5 that of enamel

C. 1/4 that of enamel

D. 1/7 that of enamel

3020. The most accepted theory for dentin sensitivity is: or Which of the following is the most accepted theory of transmission of dental sensation_____________?
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A. Hydrodynamic theory

B. Direct neural stimulation

C. Transduction theory

D. Hydrostatic theory

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