medical MCQs – Page 321

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 Review each marked answer and report any item that may be outdated or unclear.

6401. What is the PH at which initiation of caries begin ?
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A. 3.5-4.5

B. 5.2-5.5

C. 4.9-5.1

D. 4.3-4.5

6402. Caries, all are true except______________?
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A. Pit and Fissure caries can be prevented by using pit and tissue sealants

B. Lactobacillus is main acusative organism in plaque

C. Smooth surface caries occur due to streptococcus mutans

D. Fluorides help in reducing caries incidence

6403. A child has marked difference of crown, root size, eruption pattern of left & right side of jaw. The condition is______________?
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A. Achondroplasia

B. Hemifacial hypertrophy

C. Crouzan syndrome

D. Cherubism

6404. The cyst which is found within the bone at the junction of teh globular process, the lateral nasal process & maxillary process is______________?
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A. Naso palatine cyst

B. Globulomaxillary cyst

C. Naso-alveolar cyst

D. Mid palatine cyst

6405. The enzyme glucosyl transferase secreted by Streptococcus mutans sythesizes glucans from_____________?
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A. Sucrose

B. Glucose

C. Fructose

D. Lactose

6406. Animals maintained in germ free environmental did not develop caries even when fed on a high carbohydrate diet is given by_____________?
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A. Gottlieb

B. Synder

C. Orland and Fizgerald

D. Miller

6407. A deep pit lined by enamel seen in the lingual surface of Maxillary lateral incipor is most likely to be_______________?
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A. Enamel Hypoplasia

B. Talons cusp

C. Dens in dente

D. Enamel Pearl

6408. Facial edema, cheilitis granulomatosa and a fissured tongue characterize which of the following syndromes ?
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A. Teacher Collins

B. None of the above

C. Frey

D. Melkerson-Rosenthal
6409. In the earliest stages of carious lesion. There is loss of______________?
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A. Enamel lamellae

B. Interprismatic substance

C. Enamel cuticle

D. Organic matrix

6410. Teratoma is best describad as______________?
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A. Associated with very painful condition

B. Originates from mesodermal tissue

C. Namartous developmental manifestation consisting of three different layers

D. Occurs most commonly in stomach and lungs

6411. Anodontia affects the growth of________________?
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A. Mandible

B. Alveolar bone

C. Maxilla

D. Cranium

6412. Lingual tonsils arise___________________?
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A. As developmental anomalies

B. As a result of hyperpalsia

C. Due to repeated trauma in the area

D. From carcinomatous transformation

6413. Peg-shaped incisors which taper towards the incisal edge are typically seen in all of the following conditions EXCEPT______________?
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A. Rickets

B. Anhidrotic ectodermal dysplasia

C. Congenital syphilis

D. Supernumerary teeth

6414. A developmental abnormality characterized by the presence of fewer than the usual number of teeth is_____________?
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A. Dens is dente

B. Oligodontia

C. Microdontia

D. Anodontia

6415. The most pronounced effect on the oral microflora of a reduction in rate of salivary flow is a_____________?
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A. Significant decrease in number of oral bacteria

B. Significant increase in number of oral bacteria

C. Shift towards more aerobic microflora

D. Shift towards more acidogenic microflora
6416. True generalized microdontia is characterized by______________?
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A. Large teeth with small jaws

B. Small teeth with large jaws

C. Smaller teeth than the normal

D. Small teeth with small jaws

6417. All are true about supernumerary tooth except_______________?
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A. More common in mandible

B. Disto molars doesnt resemble any other tooth

C. May have resemblance to normal teeth

D. Mesiodens is the most common supernumerary tooth

6418. Most common site for melanotic neuroectodermal tumour of infancy is (MNTI)_______________?
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A. Cervical spine

B. Maxila

C. Mandible

D. Ethmoid bone

6419. Definitive diagnosis of oral cancer is made by________________?
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A. Complete radiographic survey

B. Exfoliative cytology

C. Pantograph

D. Biopsy
6420. Swelling and redness of the orifices of minor salivary glands of the palate occurs in_________?
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A. Erythroplakia

B. Leukoplakia

C. Fovea Palatine

D. Nicotinic stomatitis