Stain

Question 1

stain is classified in two ways..

Answer 1

ability to be removed, by its source

Question 2

two types of stain (in terms of ability to be removed)

Answer 2

intrinsic (in the tooth), extrinsic (on the tooth)

Question 3

two types of stain (in terms of by its source)

Answer 3

exogenous (source from outside tooth), endogenous (source from inside tooth)

Question 4

example causes of extrinsic stain

Answer 4

coffee, tea

Question 5

etiology of intrinsic stain

Answer 5

patient history of fever, disease, fluoride

Question 6

examples of instrinsic stain

Answer 6

tetracycline, fluorosis

Question 7

examples of extrinsic stain

Answer 7

green stain, tobacco, medications (stannous fluoride, chlorohexidine)

Question 8

brown stain is caused by…

Answer 8

red wine, tea, coffee

Question 9

green stain is caused by…

Answer 9

chromogenic bacteria/fungi

Question 10

iron in salvia/iron-containing oral solutions can cause…

Answer 10

black stain

Question 11

orange stain is caused by…

Answer 11

chromogenic bacteria

Question 12

mercury and lead dust lead to…

Answer 12

blue-green stain

Question 13

chewing betel nut, betel leaf can cause…

Answer 13

red-black stain

Question 14

tetracycline stain clinical appearance

Answer 14

grayish-brown discoloration, can occur as a “band” across teeth

Question 15

dental fluorosis clinical appearance

Answer 15

white-spotted to brown-pitted enamel

Question 16

true or false? extrinsic stains cannot be removed by scaling/polishing

Answer 16

false, they can (extrinsic = removable, intrinsic = NOT removable)