TRUE about ANUG is:

 # TRUE about ANUG is:

A. ANUG is a transmissible condition

B. ANUG is a communicable disease

C. ANUG is a contagious disease

D. All of the above

The correct answer is A. ANUG is a transmissible condition

The term 'transmissible' denotes a capacity for the maintenance of an infectious agent in successive passages through a susceptible animal host. The term 'communicable' signifies a capacity for the maintenance of infection by natural modes of spread such as direct contact through drinking water, food and eating utensils; by the airborne route; or by arthropod vectors. The disease that is communicable is described as contagious.

It has been demonstrated that disease associated with the fusospirochetal bacterial complex is transmissible; however it is not communicable or contagious. 

CLICK HERE FOR MORE MCQs

Punched out, crater-like depressions at the crest of the gingiva

 # Punched out, crater-like depressions at the crest of the gingiva, covered by gray pseudomembranous slough, which is demarcated from the rest of the
gingiva by linear erythema, are characteristic of:

A. Desquamative gingivitis

B. Erythema multiforme

C. Lichen planus

D. Vincent’s stomatitis

The correct answer is D. Vincent's stomatitis.

Vincent's stomatitis is also known as ANUG/Vincent's infection/ Trench mouth/ Fetid stomatitis/ Putrid stomatitis.

It is characterized by punched out, crater like depressions at the crest of the interdental papillae that subsequently extend to the marginal gingiva and rarely to the attached gingiva and oral mucosa. 

CLICK HERE FOR MORE MCQs

Which premolar resembles a canine?

 # Which premolar resembles a canine?

A. Maxillary first premolar

B. Mandibular first premolar

C. Maxillary second premolar

D. Mandibular second premolar

The correct answer is B. Mandibular first premolar.

Mandibular 1st premolar resembles canine from buccal aspect and it has almost rudimentary lingual cusp which further makes it canine alike.

CLICK HERE FOR MORE MCQs

Which primary tooth does not resemble successor?

 # Which primary tooth does not resemble successor?

A. Incisors

B. Canines

C. Maxillary first molar

D. Mandibular first molar

E. Mandibular second molar

The correct answer is D. Mandibular first molar.

Molars have premolars as successors. Primary Maxillary 1st molar resembles permanent premolars. Primary Maxillary and Mandibular 2nd molar resemble permanent 1st molars. Primary mandibular 1st molar does not resemble any of the permanent teeth. 

CLICK HERE FOR MORE MCQs

Resorbability of the roots of primary dentition is explained by:

 # Resorbability of the roots of primary dentition is explained by:

A. Genetically determined

B. Pressure applied by successors

C. Both A and B

D. None

The correct answer is C. Both A and B.

Resorbability of the roots depends on both the above factors.

If there is no successor of primary tooth then it function as a permanent tooth and its root does nor resorb which indicates that its dependency on pressure applied by successor. It also depends on the genetic factors.

CLICK HERE FOR MORE MCQs

Occlusal fossa of the primary crown is:

 # Occlusal fossa of the primary crown is:

A. Shallower than the permanent

B. Deeper than the permanent

C. Same as permanent

D. Any of the A or B

The correct answer is A. Shallower than the permanent.

Since the thickness of the covering of pulp (enamel and dentin) is less in primary crown, the fossa is shallower as compared to permanent crown.

Pulp chamber is larger in relation to crown size in primary teeth as compared to permanent teeth.

CLICK HERE FOR MORE MCQs

By what maximum age should the first teeth erupt?

 # Normally, by what maximum age should the first teeth erupt?

A. 10 to 11 months

B. 6 to 8 months

C. 14 to 16 months

D. None of the above

The correct answer is A. 10 to 11 months.

In primary dentition, the variation of eruption has a range of 4-5 months. Since the first tooth erupts at an age of six months, a variation of 4-5 months can be considered normal. 

CLICK HERE FOR MORE MCQs