Physical and Chemical Injuries

Question 1

linea alba

Answer 1

white line due to pressure, friction, or sucking trauma

Question 2

linea alba is located

Answer 2

on buccal mucosa at level of occlusal plane

bilateral

Question 3

morsicatio buccarum

Answer 3

cheek biting

Question 4

clinical features of morsicatio buccarum

Answer 4

unilateral or bilateral
thick, white shreeded areas
more prominent anteriorly

Question 5

morsicatio buccarum vs leukoplakia

Answer 5

periphery blends with surrounding mucosa for morsicatio buccarum

Question 6

predisposing factors of morsicatio buccarum

Answer 6

stress
factital

Question 7

treatment of morcicatio buccarum

Answer 7

no treatment necessary

consider oral appliance if behavior is unchanged or lesios are symtomatic

Question 8

riga fede disease

Answer 8

-sublingual tip of tongue ulcer
-associated with natal and neonatal teeth
-happens in newborns with neonatal teeth

Question 9

truamatic ulcerative granuloma with stromal eosinophilia (TUGSE)

Answer 9

-variant of traumatic ulcer
-lots of inflammation with many eosinophils
-clinically resembles sarcoma
-usually on tongue
-persistent and heal slowly

Question 10

contact electrical burn cycle

Answer 10

contact –> through body –> to ground

Question 11

contact electrical burn causes

Answer 11

cardiopulmmonary arrest (frequently fatal)

Question 12

arc burn mechanism

Answer 12

contact –> arc via saliva –> to tissue

Question 13

clinical features of arc burn

Answer 13

massive tissue destruction
usually lips and commissure
teeth often devitalized
developing teeth malformed
nerve damage

Question 14

clinical features of chemical burns

Answer 14

chemical erosion of enamel
coagulative necrosis of epithelium
pseudomembrane formation
desquamation

Question 15

causes of chemical burns

Answer 15

aspirin
hydrogen peroxide
silver nitrate
phenol
endodontic materials

Question 16

preventative measures of chemical burns

Answer 16

follow manufacturer’s directions
use rubber dam

Question 17

causes of anesthetic necrosis

Answer 17

local ischemia
faulty technique
epinephrine

usually palatal attached gingiva and hard palate (greater palatine nerve)

Question 18

types of submucosal hemmorrhage

Answer 18

petechiae
ecchymoses
hematoma

Question 19

petechiae

Answer 19

pinpoint hemorrhage

Question 20

ecchymoses

Answer 20

area >2cm

Question 21

hematoma

Answer 21

mass lesion

Question 22

causes of submucosal hemorrhage

Answer 22

1. anticoagulant therapy
2. thrombocytopenia
3. disseminated intravascular coagulation
4. infectious mononucleosis
5. measles

Question 23

oral lesions resulting from sexual practices

Answer 23

1. asymptomatic palatal hemorrhage from fellatio
2. horizontal laceration of lingual frenum from cunnilingus
3. minimal treatment

Question 24

exogenous causes of pigmentation of oral mucosa

Answer 24

1. amalgam incorporation
2. silver solder, coal, graphite
3. smoking, flossing
4. chemotherapy drugs
5. AIDS medications

Question 25

lingual sequestration

Answer 25

oral ulceration with bone sequestration

Question 26

lingual sequestration location

Answer 26

posterior lingual mandible along mylohyoid ridge

Question 27

management of lingual sequestration

Answer 27

spontaneous exfoliation
assisted exfoliation
surgical removal

Question 28

myospherulosis

Answer 28

foreign body reaction to topical antibiotic in petrolatum base

Question 29

clinical features of myospherulosis

Answer 29

1. frequently asymptomatic, non-healing extraction site
2. occasionally painful with purulent drainage
3. black, greasy, tar like material fills extraction site