Inflammatory Jaw Lesions

Question 1

What is periapical abscess? Characteristics?

Answer 1

Acute inflammatory cells and purulence at apex of non vital tooth.

-PDL space is widened and lamina dura effected.

Question 2

What is periapical granuloma?

Answer 2

Same as abscess but chronically inflamed tissue.

Question 3

What is a periapical (radicular) cyst? variants?

Answer 3

Cyst at the apex of a nonvital tooth.

• Lateral radicular cyst is from a lateral canal.
• Residual cyst is when tooth is removed but cyst remains.

Question 4

What is rarefying osteitis?

Answer 4

Radicular granuloma, cyst, or abscess are collectively called this.

• Slow growing
• Well defined
• Radiolucent
• Non vital tooth

Question 5

what is condensing osteitis? Can leave a what after treatment?

Answer 5

Rarefying osteitis leading to sclerotic bone below it.

Can leave a bone scar.

Question 6

What is buccal bifurcation cyst characteristics? Radiographic finding?

Answer 6

A cyst that develops on buccal aspect of mandibular first molar.
-Roots are tipped lingually and crown is tipped buccally.

Question 7

What is alveolar osteitis also known as?

Answer 7

Dry socket

Question 8

What happens with sinus tract periapical abscess?

Answer 8

Pus dissects through bone and perforates cortical plate extending into soft tissue.

Question 9

What is a parulis?

Answer 9

gum boil. Marks exit point of sinus tract on oral mucosa.

Question 10

What is a cutaneous parulis?

Answer 10

Sinus tract exit on skin.

Question 11

What is osteomyelitis? Clinical features? Radiographic?

Answer 11

Acute or chronic inflammation of bone away from initial site. Tooth infection most common cause.

• Pain
• Swelling and purulence
• fever, lymphadenopathy
• more common in madible

Radiographic= ill-defined radiolucency.

Question 12

What is sequestrum and involucrum?

Answer 12

Seq=Fragment of necrotic bone.

Inv= Dead bone that has new vital bone surround it.

Question 13

What is osteomyelitis with proliferative periostitis? Characteristics?

Answer 13

Iflammation of bone spreading to periosteum causing it to deposit bone.

• Bony swelling, no pain
• onionskin radiographic appearance.

Question 14

What is periapical abcess sequela cellulitis? Can lead to what?

Answer 14

Purulence spreads through soft tissue, usually through tissue layers. Can lead to:

1. Ludwigs angina
2. Cavernous Sinus Thrombosis

Question 15

What occurs during ludwigs angina?

Answer 15

Cellulitis of submandibular region. Can close off airway and cause death.

Question 16

What is cavernous sinus thrombosis?

Answer 16

Infection that spreads to cavernous sinus. Death can occur.