Mcq Subject: Dental

Collagen biosynthesis occurs inside the:

A. Chondroblasts

B. Odontoblasts

C. Osteoblasts

D. Fibroblasts

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A child has mid-crown fracture in a permanent maxillary central incisor several months ago, the pulp is now necrotic, radiographic examination reveals an incompletely formed root with an open apex. The treatment of choice is:

A. Formocresol pulpotomy

B. Root canal therapy

C. Calcium hydroxide pulpotomy

D. Apexification

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Lamina densa of the basal lamina beneath the epithelium is composed of

A. Type I Collagen

B. Type II Collagen

C. Type III Collagen

D. Type IV Collagen

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In a UK study, it was found that there were more deaths from asthma than the sale of anti-asthma drugs. This is an example of:

A. Cohort study.

B. Case reference study.

C. Ecological study.

D. Experimental study.

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The advantage of using a tooth positioner as a retainer is :

A. Final setting of occlusion

B. Used in uncooperative patients

C. Esthetics

D. Gingival margin inflamed during orthodontic treatment

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Drugs known to cause Steven Johnson syndrome include the following except:

A. Cephalosporins

B. Ibuprofen

C. Carbamazepine

D. Paracetamol

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The number 12 in a 3 unit formula 12-6-8 indicates the blade is

A. 12 mm in length

B. 1.2 mm in length

C. 12 mm in width

D. 1.2 mm in width

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Predominant bacteria found in two days old plaque

A. Streptococci

B. Bacteroides

C. Spirocheates

D. Actinomyces

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Gingival sulcus is V shaped and it barely permits the entrance of a

A. Periodontal hoe

B. Periodontal curette

C. Periodontal probe

D. Periodontal sickle

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True about the statement is: When null hypothesis is rejected when it is true?

A. Type I alpha error

B. Type II beta error

C. Gamma error

D. All of the above

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