520. The lamina propria is:

 A.  epithelial tissue 
 B.  connective tissue 
 C.  adipose tissue 
 D.  muscle tissue 

445. A patient is congenitally missing the maxillary lateral incisors and mandibular second premolars. This individual is said to have the condition known as:

 

A.           anodontia

B.           oligodontia

C.           hypodontia

D.           hyperdontia 

322.In a reflected light dead tracts are seen as

a.White zone
b.Black zone
c.Purple zone
d.Combination of white and black zone

Ans-a.White zone

313.Which of the following is correct when examining the cervical cross section of the mandibular 2nd molar:

A. the root is wider MD than FL
B. may have a C shaped canal
C. Depressions are usually located on the lingual and facial surfaces
D. all the above


Ans-D.all of the above

313.On the facial view of the Mandibular Canine

A. the mesial cusp slope that is shorter than the distal cusp slope
B. the mesial outline of the tooth is straighter than the distal outline of the tooth
C. the cusp tips is positioned mesial to center of the crown
D. all the above are true

Ans-D. all the above are true

312.Which is the smallest premolar

a.Maxillary first premolar
b.Mandibular first premolar
c.Maxillary second premolar
d.Mandibular second premolar

Ans-b.Mandibular first premolar

256.Palatogingival groove is present in

a.Maxillary central incisor
b.Maxillary lateral incisor
c.Mandibular central incisor
d.Mandibular lateral incisor

Ans-Maxillary lateral incisor

83.Which of the following will cause reduction of the size of the pulp chamber in mid-life?

A. Formation of primary dentin
B. Formation of secondary dentin
C. Internal resorption
D. External resorption
E. Pulp fibrosis

The correct answer is B. Primary dentin (choice A) surrounds the pulp chamber when the tooth is
first formed and erupts. It is the initial dentin that makes up the base of both the crown and root. If the
young tooth has a given size pulp chamber, further dentin formation, secondary dentin, later in life, will
begin to fill the chamber with dentin, making it smaller. Internal resorption (choice C) is loss of dentin,
resulting in a larger pulp chamber. External resorption (choice D) involves the exterior of the root and
does not change the pulp chamber size. Pulp fibrosis (choice E) would change the histology of the cells in the chamber, but not the chamber's size


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81.In restoring a mandibular first molar, lingual cusps are important for which movement?

A. Centric occlusion B. Protrusive
C. Retrusive D. Working E. Nonworking

ANS. D. To answer this question, place your own teeth in centric occlusion(maximum intercuspation). Notice that the occlusion is held in place by the lingual cusps of maxillary teeth and the buccal cusps of mandibular teeth. Mandibular lingual cusps are not in contact. In protrusion, the anterior teeth act to separate the maxilla and mandible as the mandible moves forward. The anterior teeth act as guides in retrusion as well (try it). So far the mandibular lingual cusps are not involved. If you make a left working movement (slide your mandible left), notice that the mandibular lingual cusps on the left, drag against the lingual side of the maxillary lingual cusps. In the nonworking side (in this case, the right side), the mandibular lingual cusps move AWAY from contact.


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77.Which muscle is the chief mover of the mandible TOWARD the left?

A. Left medial pterygoid
B. Left lateral pterygoid
C. Right medial pterygoid
D. Right lateral pterygoid

ANS.D. There are two methods for answering this question. The formula method

states that the right lateral pterygoid moves the mandible left, whereas the left lateral pterygoid moves

the mandible right. The understanding method begins with the idea that the medial pterygoid is a

closer (elevator). The lateral pterygoid connects to the condyle and is a protruder. If the right lateral

pterygoid pulls the right condyle out while the left lateral pterygoid and condyle remain stable, the left

side will act as a stationary pivot point while the right side protrudes outward and also toward the left

(medially).

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75.Which cusp of the maxillary molar is NOT part of the trigon (primitive cusp triangle)?

A. Mesiolingual    B. Mesiobuccal

C. Distolingual     D. Distobuccal

ANS> C. In evolution, three cusps of the maxillary molar are considered to be the 

primary cusp triangle, and the original three cusps of the evolving molar. They form the trigon, and are 

the MB, ML, and DB cusps. The fourth cusp, the DL, is the smallest, is considered to be a minor cusp, 

and is known evolutionarily as the talon, or talon cusp. This cusp is less conspicuous as you go from 

first to second to third maxillary molar. 

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72. Which cusp on the primary mandibular first molar is highest and sharpest?

A. Mesiobuccal       B. Distobuccal

C. Mesiolingual        D. Distolingual



ANS.  C. The primary first mandibular molar is a highly unusual tooth. It is molar-like

in form, with two roots (mesial and distal), but has a very pronounced mesial development of the

crown. The mesial section comprises two-thirds of the crown, and the distal portion is much reduced.

The mesiolingual cusp is the highest and sharpest, although the mesiobuccal is overall largest as

viewed from the occlusal. It is followed in size by the ML, DB, and DL cusps.

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69.Which type of dentin is most regular in structure?

A. Primary B. Secondary
C. Reparative dentin
D. All have the same

ANS>a
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59.Tuberculosis is immunologically mediated disorder of

a. Autotoxic type b. Immune complex disease
c. Delayed hypersensitivity d. Anaphylactic type

Ans: C. Delayed hypersensitivity: A non-immunized person by a tuberculin skin test, which yields a delayed hypersensitivity type response to purified protein derivatives of M. tuberculosis. Those immunized for TB or with past-cleared infection will respond with delayed hypersensitivity parallel to those currently in a state of infection and thus the test must be used with caution, particularly with regard to persons from countries where TB immunization is common.

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