Stains

Question 1

Extrinsic Stain

Answer 1

Stains on external surface of tooth.

Can be removed by brushing, scaling, polishing

Question 2

Intrinsic Stain

Answer 2

Occurs within tooth surface.

Cannot be removed by scaling or polishing.

Question 3

Exogenous

Answer 3

Stain developed from sources outside the tooth

Can be extrinsic or intrinsic.

Question 4

Endogenous

Answer 4

Stains developing from within the tooth.

Always intrinsic. Associated w dentin thru enamel

Question 5

Green Stain

Answer 5

*enamel under this stain may be demineralized -> fluoride treatments!
Chromogenic bacteria, primarily in children

Question 6

Black Line Stain

Answer 6

Calculus-like.

Found in clean mouths.

Question 7

Tobacco Stain

Answer 7

Can become exogenous, intrinsic

Question 8

Orange + Red Stain

Answer 8

Chromogenic bacteria, rare

Question 9

Amelogenesis Imperfecta

Answer 9

Enamel partially or completely missing bc of a disturbance of ameloblasts - hereditary, yellow/brown
*Endogenous intrinsic
Imperfect tooth development

Question 10

Dentinogenesis Imperfecta

Answer 10

Abnormal dentin due to disturbance of odontoblasts.
Translucent/blue/gray
Genetic Imperfect tooth development

Question 11

Enamel hypoplasia : Local

Answer 11

Affects a single tooth due to trauma

Question 12

Fluorosis

Answer 12

Damage ranges:

White spots to brown stain to enamel pitting