Enamel

Question 1

Abrasion

Answer 1

Loss through friction from toothbrushing

Question 2

Attrition

Answer 2

Loss through tooth to tooth contact (mastication and parafunctional habits)

Question 3

Enamel Lamellae

Answer 3

DEJ to outer surface of enamel - partially mineralized vertical sheets of enamel matrix that extend from the DEJ near tooth cervix to outer occlusal surface

Question 4

Enamel Spindle

Answer 4

Dentinal tubules that crossed basement membrane and got trapped in enamel matrix and enamel mineralized around them.

Question 5

Enamel tuft

Answer 5

small dark brushes near DEJ - microscopic

Question 6

Erosion

Answer 6

Loss through chemical means - acids

Question 7

Hypocalcified enamel

Answer 7

hypomineralized - white spots

Question 8

hypoplastic enamel

Answer 8

hypomineralized - same as hypocalifiication

Question 9

Imbrication line

Answer 9

ridge between striae of retzius

Question 10

Neonatal line

Answer 10

An accentuated line of retzius marks the stress ameleoblasts undergo during the birth process

Question 11

Striae of Retzius

Answer 11

slight change in development of enamel matrix - striations on crown of newly erupted tooth.