Week 6 - stains and scores

Question 1

Plaque control record (O’Leary - PCR) formula

Answer 1

sum of disclosed surfaces divided by total surfaces (available) x 100% = % index (plaque score)

record in red surfaces with disclosed plaque

Question 2

Patient hygiene performance index (PHP)

Answer 2

• each tooth receives score out of 5

Question 3

PCR scoring

Answer 3

total # of teeth x 4 (or 6)
count # of surfaces with biofilm x 100, divide total available surfaces by amount of surfaces covered
- 10% or less good

Question 4

Green stain

Answer 4

chromogenic bacteria and fungi, extrinsic, should not be scaled (b/c demineralized enamel)

Question 5

Black stain

Answer 5

iron in saliva, extrinsic, scale and polish

Question 6

Black-line stain

Answer 6

iron, in healthy women w good oral hygiene, extrinsic, scale and polish

Question 7

orange stain

Answer 7

chromogenic bacteria from poor oral hygiene (rare), extrinsic, scale and polish

Question 8

brown stain

Answer 8

tobacco, food, beverage or chemo, extrinsic, scale and polish

Question 9

grey/brown - green stain

Answer 9

marijuana, extrinsic, scale and polish

Question 10

yellow stain

Answer 10

Oral biofilm, poor oral hygiene, extrinsic, client remove with brush

Question 11

blue - green stain

Answer 11

mercury and lead dust, extrinsic, scale and polish

Question 12

Red-black stain

Answer 12

betel nut/leaf, extrinsic, scale and polish

Question 13

white-spotted to brown-pitted enamel stain

Answer 13

dental fluorosis, excessive Fl during enamel development, intrinsic, cannot be removed

Question 14

White spots on enamel stain

Answer 14

hypo calcification, high fever during enamel formation, intrinsic, cannot be removed

Question 15

white brown spots on enamel may be smooth or rough stain

Answer 15

acid erosion of enamel caused by biofilm, intrinsic, cannot be removed

Question 16

greyish brown dicouloration stain

Answer 16

tetracycline, use during tooth development, cannot be removed

Question 17

pitting, sough surfaces stain

Answer 17

enamel hypoplasia, enamel defect, trauma, infections, cannot be removed