Viruses in Dentistry

Question 1

Papovaviruses are DNA or RNA?

Answer 1

DNA

Question 2

HPV or human papillomavirus are the main cause of what?

Answer 2

skin warts

Question 3

What % of people have or HPV in the oral mucosa?

Answer 3

40%

Question 4

What do Adenoviruses induce?

Answer 4

latent infections of the tonsils, adenoids, and other lymphoid tissue.

Question 5

Herpes viruses number what to what?

Answer 5

1-8

Question 6

HSV 1,2 primary infections

Answer 6

include gingivostomatitis, mout lesions, genital herpes, herpetic whitlow- infection of fingers aquired by dentists from contamination, conjunctivitis, and encephalitis

Question 7

HSV 1,2 recurrent infections

Answer 7

involves a reactivation of the virus in the trigeminal ganglion or sacral ganglia

Question 8

HSV1 generally causes lesions where?

Answer 8

above the belt

Question 9

HSV2 generally causes lesions where?

Answer 9

below the belt

Question 10

Herpes Varicella and zoster ( HSV3)

Answer 10

Varicella is chicken pox, zoster is shingles

Question 11

where does herpes zoster lie dormant?

Answer 11

trigeminal or dorsal root.

Question 12

human herpes virus 4 is known as EBV which means?

Answer 12

Ebstain barr virus

Question 13

after the primary infection where does the EBV virus hide?

Answer 13

B lymphocytes

Question 14

What does EBV cause?

Answer 14

mononucleosis, burkitts lymphoma, oral hairy leukoplakia

Question 15

what is is mononucleosis?

Answer 15

causes fever, tonsilitis, fatigue, splenomegaly. lymphocytosis

Question 16

whats burkits lymphoma?

Answer 16

malignant tumor that spreads rapidly . Common in Africa with malaria

Question 17

Human herpes virus 6 has affinity to what two cells?

Answer 17

T and B cells

Question 18

where is HHV in oral cavity found?

Answer 18

saliva and salivary gland epithelium.

Question 19

HV7 is what kid of virus?

Answer 19

T- lymphotrophic virus

Question 20

HHV8 is a possible agent for what?

Answer 20

kaposis sarcoma

Question 21

What does orthomyxoviridae cause? and how is this virus divided?

Answer 21

worldwide influenzas, Divided into subtypes A,B,C on the basis of antigenic properties of their major nucleocapsid protein (NP)and its viral envelope matrix protein(M)

Question 22

The variations of the different orthomyxoviridae are due to what?

Answer 22

haemaglutinin ( H antigens) and neuraminidase ( N antigens)

Question 23

What causes these variations?

Answer 23

antigentc drift and antigenic shift

Question 24

Is paramyxoviridae RNA or DNA?

Answer 24

RNA

Question 25

name the 4 groups of paramyxoviridae?

Answer 25

Parainfluenza virus, mumps, measles, respiratory syncytial virus (RSV)

Question 26

what does parainfluenza virus cause?

Answer 26

human respiratory infections of autumn and winter

Question 27

what does mumps cause?

Answer 27

parotitis of parotid glands

Question 28

what does the measles virus cause?

Answer 28

kipliks spots- buish white pinpoint spots by orfice of parotid duct

Question 29

what does syncytial virus cause?

Answer 29

affects lower respiratory tract and mainly kids especially in first 6 months.

Question 30

what kind of virus is picornaviridae?

Answer 30

RNA

Question 31

name the 4 members of picornaviridae

Answer 31

Poliovirus, coxsackieviruses, echoviruses, and rhinoviruses

Question 32

what 3 are joinlty called enteroviruses?

Answer 32

poliovirus, coxsackieviruses and echovirus

Question 33

how is coxasackieviruse divided?

Answer 33

group A and B, Group B causes herpangina and hands foot and mouth disease

Question 34

what do rhinoviruses cause?

Answer 34

common cold, they require 33 deg C , this is why they replicate in the upper respiratory tract.

Question 35

Togaviridae causes what?

Answer 35

rubella- childhood fever that resembles measles