ODP Test 2 UPDATED ACTUAL Exam Questions and CORRECT Answers

ODP Test 2 UPDATED ACTUAL Exam
Questions and CORRECT Answers
who invented the toothbrush - CORRECT ANSWER - the Chinese (Tang Dynasty)



who manufactured the first toothbrush in 1780 - CORRECT ANSWER - William Addis



When were nylon bristles introduced - CORRECT ANSWER - 1900's



when and where was the first powered toothbrush developed - CORRECT ANSWER -
1939, Switzerland


what is the use of the manual toothbrush - CORRECT ANSWER - removing oral biofilm,
food, debris and stains


what bristle hardness is recommended? - CORRECT ANSWER - soft / extra soft



what are the four basic toothbrush profiles? - CORRECT ANSWER - concave
convex
multilevel (improved cleaning)
flat


info about natural bristles - CORRECT ANSWER - -hog bristles, hollow
-wear rapidly and irregularly
-bristle diameter 0.002-0.02 in.
-cant be standardized
-extremely flexible when wet

, info about nylon bristles - CORRECT ANSWER - -flexes more often
-uniformity controlled
-end rounded
-resistant to bacteria
-easier to clean and dry
-economical
-maintain form and durability


______ bristles diameter allows more resiliency and softness?
a) thin

b)thick - CORRECT ANSWER - a) thin




0.007 - 0.015 inches


where is the placement of bristles for an electric toothbrush? - CORRECT ANSWER -
along the gingival margin


what are the three categories of powered toothbrushes - CORRECT ANSWER -
mechanical
sonic
ionic


what are the three patterns of movements in powered toothbrushes? - CORRECT
ANSWER - oscillation
reciprocation
rotational