Periapical Radiopacities

Question 1

what are the periapical radiopacities

Answer 1

• periapical sclerosing osteitis
• idiopathic osteosclerosis
• periapical cemento osseous dysplasia
• focal cemento osseous dysplasai
• cementoblastoma
• hypercementosis

Question 2

what is another name for periapical sclerosing osteitis

Answer 2

condensing osteitis

Question 3

describe periapical sclerosing osteitis

Answer 3

• apex of non-vital tooth
• chronic inflammatory process
• reactive bone deposition
• may be apical radiolucency
• often asymptomatic

Question 4

describe osteosclerosis

Answer 4

• unknown etiology
• usually solitary
• painless, non-expansile
• mandible- premolar/molar region
• vital tooth
• no TX

Question 5

what is the DDX for condensing osteitis

Answer 5

osteosclerosis

Question 6

what is another name for fibro osseous lesions

Answer 6

cemento osseous dysplasia

Question 7

what are the 3 types of fibro osseous lesions

Answer 7

• periapical cemento osseous dysplasia
• focal cemento osseous dysplasia
• florid cemento- osseous dysplasia

Question 8

what are the 3 stages of fibro osseous lesions

Answer 8

• stage 1: looks radiolucent
• stage 2: mixed appearance
• stage 3: mature stage: lesion is mainly radiopaque

Question 9

describe periapical cemento osseous dysplasia

Answer 9

• etiology unknown
• mainly involves lower incisors
• self limiting condition
• middle aged african american, asian females
• most common in anterior mandible
• single or multiple lesions
• well defined margins
• radiolucent rim with possible sclerotic border
• lamina dura discontinuous
• larger lesions may expand cortex
• teeth vital
• no TX needed

Question 10

describe focal osseous dysplasia

Answer 10

• solitary lesion
• most common in posterior mandible
• most common appearance: mixed lucent/opaque
• may progress to more widespread form

Question 11

what may be associated with some cemento osseous dysplasia lesions

Answer 11

simple bone cysts

Question 12

describe cementoblastoma

Answer 12

• wide age range; young adults
• males > females
• mandibular premolar, first molar
• solitary lesion; expansile
• radiopaque or mixed density with radiolucent rim
• attached to root; external root resorption
• vital tooth; often painful

Question 13

describe hypercementosis

Answer 13

• etiology unknown
• bulbous shaped roots
• intact PDL space, lamina dura
• teeth are vital