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Standard precaution provides protection against various bodily fluids, except
a) Blood
b) Saliva
c) Sweat
d) Tears ✔Correct Answer-Sweat
What is not true about hand hygiene?
a) Gloves can be substituted for hand washing
b) Nails should be short and clean
c) Rings must be removed
d) Use a towel to dry hands ✔Correct Answer-Gloves can be substituted for hand washing
Needle stick injury is a major cause of disease transmission to health care personnel. Which
technique is best to prevent such injury?
a) Bending the needle before injection
b) Breaking the needle before disposal in waste
c) Scoop recapping technique
d) Two-handed recapping technique ✔Correct Answer-Scoop recapping technique
Which statement is not true about preparing instruments for sterilization?
a) An additional external chemical indicator can be used
b) An internal chemical indicator should be placed in every package
c) Insert the instruments in packages directly from the ultrasonic bath
d) The clinician should wear puncture resistant utility gloves ✔Correct Answer-Insert the
instruments in packages directly from the ultrasonic bath
A white, painless, flat lesion is best described as?
a) Erythroplakia
b) Leukoplakia
c) Lichen planus
d) Papilloma ✔Correct Answer-Leukoplakia
The clinician noticed a cluster of radiolucencies that she called "soap bubbles" on the
panoramic radiograph of a new patient. Which of the following pathologies could be included in
the differential diagnosis?
a) Odontoma
b) Leukoplakia
,c) Osteosarcoma
d) Ameloblastoma ✔Correct Answer-Ameloblastoma
Which of the following is not related to cherubism?
a) It may cause expansion of the mandible
b) It may cause premature loss of primary teeth
c) It is a hereditary condition
d) The bone forms radiopacities described as cotton wool ✔Correct Answer-The bone forms
radiopacities described as cotton wool
Which of the following is NOT correct regarding major aphthous ulcers?
a) Lesions appear as tiny vesicles
b) Lesions are usually painful
c) Lesions may take several weeks to heel
d) Lesions are commonly associated with immunosuppressive diseases ✔Correct Answer-
Lesions appear as tiny vesicles
The patient presents with one area in the vestibule that is white and tissues that slough off.
Upon talking to the patient, you realize that the patient had been suffering from a toothache
and he used an aspirin tablet on the area to calm the pain. The patient is worried that he has
cancer. What advise could the clinician give?
a) It can be cancer, therefore a biopsy is required
b) A radiographic examination will provide a definite diagnosis
c) It is candidiasis, therefore antifungal cream is need
d) It is most likely a mucosal burn, therefore the abnormality should be watched for a few weeks
as it will heal on its own ✔Correct Answer-It is most likely a mucosal burn, therefore the
abnormality should be watched for a few weeks as it will heal on its own
Caries that appear underneath a restoration are called.
a) White lesions
b) Cavities
c) Arrested caries
d) Secondary caries ✔Correct Answer-Secondary caries
What type of food is more cariogenic?
a) Gummy bears
b) Bread
c) Soda
d) Water ✔Correct Answer-Gummy bears
Gram-positive rods appear how many days after plaque accumulation?
a) After 2-4 days
b) After 4-7 days
c) After 7-14 days
, d) After 14-21 days ✔Correct Answer-After 2-4 days
Which type of hyper sensitivity has the most delayed response?
a) Type 1
b) Type 2
c) Type 3
d) Type 4 ✔Correct Answer-Type 4
A patients blood pressure is 184/110 mmHg. You let the patient rest for 5 minutes and then
recheck the blood pressure. If it is still 184/110 mmHg, what should you do?
a) send the patient home
b) Refer to a doctor
c) Proceed with hand instrumentation only
d) Provide oxygen
e) A and B ✔Correct Answer-Refer to a doctor
Which symptom is not related to excessive fluoride ingestion?
a) Nausea
b) Abdominal pain
c) Diarrhea
d) Fruity breath ✔Correct Answer-Fruity breath
When a patient is experiencing an asthmatic attack, which position can best help with
breathing?
a) Supine position
b) Seated position
c) Trendelenburg position ✔Correct Answer-Seated position
Which part of an atom is not responsible for its mass?
a) Electrons
b) Protons
c) Neutrons
d) Nucleus ✔Correct Answer-Electrons
What is the total limit for occupational exposure to radiation per year?
a) 0.5 rem
b) 5 rem
c) 50 rem
d) 500 rem ✔Correct Answer-5 rem
Which of the following is the most common scatter produced by dental radiation?
a) Compton scatter
b) Photoelectric scatter
c) Coherent scatter