radiopaque jaw lesions

radiographic presentation of root remnants

• has a thin RL rim or PDL space (sometimes, this is when it harder to distinguish it between DBI)

• long oval shape

• pulp canal sometimes visible

common location for root remnants

• M or D of premolars, mand > max

• post ext sites

radiographic presentation of hypercementosis

• within PDL space

• bulbous root

• lamina dura and PDL in tact

• well defined

what is hyperostosis/exostosis/tori

bony masses arising from cortical (or cancellous) bone; is non-neoplastic

where hyperostosis/exostosis/tori would arise in the maxilla

• exostoses: most commonly along B or palatal alveolar bone

• tori: palatal midline

where hyperostosis/exostosis/tori would arise in the mandible

• exostosis: can be B alveolar bone

• tori: lingual

what is the most common hyperostosis

tori: hard palate midline or lingual mandible

radiographic presentation of foreign body/bone graft

• granular, RO material

• edentulous site

• within sockets, along alveolar ridge

• sinus floors

• loose fragments within soft tissue

dense bone island is also called

idiopathic osteosclerosis

radiographic presentation of dense bone island

• well defined

• no RL rim, can blend w bone or lamina dura

• PDL in tact

• vital teeth but can induce resorption

condensing osteitis is also called

sclerosing osteitis, reactive bone formation

condensing osteitis clinical presentation

associated w teeth due to inflamed or infected tooth → tooth is non-vital

radiographic presentation of condensing osteitis

• periapical to tooth

• no RL rim

• widened PDL space

what is an osteoma

benign slow growing bone tumor from periosteum that can occur on a bone surface or within paranasal sinuses; non-neoplastic

common location associated w osteoma

sinuses, ramus, inferior border of mandible, condyle/coronoid, max/mand

radiographic presentation of osteoma

• well defined

• convex/lobulated

• RO mass

what are common patterns to describe fibrous dysplasia radiographically

• ground glass

• orange peel

• cotton wool

• finger print

fibrous dysplasia effect on adjacent structures

• no effect on teeth

• can cause lateral wall of maxilla to expands into maxillary sinus

• cortical bone thin out but no perforation

• superior displacement of IAC

what are the 3 types of cemento-osseous dysplasia

• periapical

• focal

• florid

3 stages of periapical cemento-osseous dysplasia

• early → RL

• intermediate → RO w RL rim and sclerotic borders

• mature/late phase → sclerotic RO w RL rim

location associated w periapical cemento-osseous dysplasia

anterior mandible

location associated w focal cemento-osseous dysplasia

posterior mandible

location associated w florid cemento-osseous dysplasia

multi quadrant

radiographic presentation of cemento-osseous dysplasia

• RO lesion w RL rim

• surrounded by sclerotic bone

• continuous w PDL

• loss of lamina dura

cemento-osseous dysplasia effects on surrounding structures

• no root resorption → teeth are vital

• can displace cortical bone and IAC

location associated w cementoblastoma

root/apices of mandibular dentition → premolars and molars

radiographic presentation of cementoblastoma

• concentric

• RL rim

• attached to the root w resorption → tooth vital but can be associated w pain

• PDL not visible

what are the 3 types of odontoma

• compound → more common

• complex

• dilated

radiographic presentation of compound odontoma

cluster of teeth, common in anterior maxilla

radiographic presentation of complex odontoma

irregular mass of RO, common in posterior mandible

dilated odontoma

des e dente

location associated w ossifying fibroma

mandible > max

radiographic presentation of ossifying fibroma

• concentric, multilocular

• wide zone of transition or thin cortication

• RL rim

• wispy, granular or solid

ossifying fibroma effects on adjacent structures

• root resorption

• displace teeth

• cortical expansion