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All of the following factors support the daily growth and retention of oral biofilm except which one?


A) Calculus
B) Orthodontic band
C) Mouth breathing
D) Frequent continued-care intervals

E) A) and B)
F) A) and C)

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All of the following tooth stains can be removed by scaling or selective polishing except which one?


A) Chromogenic bacteria stain
B) Extrinsic tooth stain
C) Intrinsic tooth stain
D) Chlorhexidine gluconate and cetylpyridinium chloride stain

E) C) and D)
F) A) and D)

Correct Answer

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Persons who are low calculus formers may have which of the following chemical or minerals in their saliva that inhibit calculus formation?


A) Octocalcium
B) Pyrophosphate
C) Calcium and phosphorous
D) Whitlockite and brushite

E) B) and D)
F) B) and C)

Correct Answer

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All of the following may cause subgingival calculus to be dark in color (dark tan,brown,or black) except which one?


A) Type of bacteria it is made of
B) Absorption of blood products
C) Melanin pigmentation
D) Foods and drinks that can cause extrinsic tooth stain

E) C) and D)
F) B) and C)

Correct Answer

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What is the first stage in oral biofilm formation?


A) Initial adherence
B) Lag phase
C) Rapid growth bacterial
D) Steady state

E) None of the above
F) All of the above

Correct Answer

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