Radiology Final

what key words are associated with. a multilocular lesion?

honey comb, soap bubble

if a lesion if corticated, how will this appear on radiograph?

white border around lesion

another term for punched out radioluncies

moth eaten

what is the most common calcification 

tonsiliths 

term for defective ossification of fetal cartilage 

dysostosis 

term for ill formed or abnormality of dev 

dysplasia 

term for disturbance in bone growth bc osseus nutrition 

what is the most common hyperdontia?

mesiodens

diseases with hyperdontia include (2)

gardeners and cleidocranial dysplasia

this term is when you missing all your teeth

anodontia

most common single missing tooth

max incisor

what is a syndrome with missing teeth

ectodermal dysplasia

transposition is when

neighboring teeth trade positions

ankylosis is when..

tooth becomes fused with bone and fails to erupt properly

this term is for displaced or incorrectly positioned tooth/follicle 

ectopia 

2 teeth joined by dentin (missing a tooth)

fusion

when a tooth bud tries to divide, same number of teeth in mouth 

germination 

term when teeth are fused by cementum

concrescence

term when teeth have large trunk and an extension of pulp with normal crown 

taurodintism 

term for extreme root or tooth curve

dilaceration

an enamel pearl is

enamel on root (often near furcation)

this term of for an extra cusp on lingual surface of max or mand incisor 

talon cusp

this is a local hypoplastic defect in crown of perm tooth caused by infection or trauma

turner hypoplasia

what disease has picket fence enamel

amelogenesis imperfecta

what disease has bulbous crowns and constricted neck and short roots

dentinogenesis imperfecta

dentin dysplasia means _ teeth

rootless

what is the diff between type 1 and type 2 dentin dysplasia 

type 1: short roots

type 2: normal shape and length roots but pulp chambers are thistle shaped 

ghost teeth associated with what disease

regional odontodysplasia

non-odontogenic, lingual salivary gland depression 

stafne bone defect 

what are exostoses and enostoses?

excesss bone (benign)

exo: outside bone 

eno: within bone 

this disease is associated with supernumary teeth, impaction, and dentigenous cysts

cleidocranial dysplasia

this disease associated with early closure of sutues, frontal bossing, eyes wide, and beaten metal appearance 

crouzans syndrome 

how does acute inflamm present radiographically? 

widen PDL and reduction in bone opacity 

what are the 4 characteristics of pathology? 

location, periphery, internal structure, effect on adjacent 

pathology: non-vital tooth and throbbing pain—>see widen PDL and thicken lamina dura

apical periodontitis

apical periodontitis progresses to

apical rarefying osteitis

pathology: black radiolucency, loss of lamina dura 

apical rarefying osteitis

a halo sign is associated with what pathology

apical rarefying osteitis 

in apical rarefing osteitis there can be a halo sign in max post teeth, this means…

elevation of periosteum of maxillary sinus 

pathology: blobs of radiolucency 

periapical cemental dysplasia 

pathology: chronic inflamm and non-vital pulp, radiopaque, NO PDL space

apical sclerosing osteitis

what is a major predisposing factor for osteomyelitis 

hypovascularity 

pathology: pain, swell, red, fever, discharge 

osteomyelitis 

severe pain—>but no radiograoh manifestation yet 

acute osreomyelitis 

how many days for acute osteomyelitis to have dec in density of trabeculae and slight radiolucency

10 days

chronic osteomyelitis is associated with

sinus tract

pathology: older age, jaw enlarge bc proliferation rxn, does not cross midline, pain

diffuse sclerosing osteomyelitis 

pathology: younger pt, onion skin, hard bony swelling 

proliferative periostitis 

pathology: history of irraditon therapy, clinical signs of inflamm, widespread radioluncies 

osteoradionecrosis 

pathology: soft tissue surrounding crown (often 3rd molars) 

pericoronitis 

a cyst is….

lined by epithelium 

this cyst is bc stimulation of rests of malassez

raidicular cyst

pathology: non vital tooth, well defined cortical border, radiolucent, can displace adjacent structures 

radicular cyst 

a healing cyst will have a _ _ pattern

spoke wheel

type of cyst that occurs after incomplete removal of original cyst, occurs in _ age group

residual cyst, older 

an odontogenic lesion is always seen _ inf alv canal 

above 

pathology: seen in young pts, bilateral radiolucent, can cause lack of eruption on mand 1 or 2 molars 

buccal bifurcation cyst

pathology: common, forms around crown of unerupted tooth, radiolucent

dentigenous cysts

most common cyst

radicualr cysts

2 most common cyst

dentigenous cyst

pathology: seen between 2 teeth, usually found within lateral incisor to mand 2 premolar, radiolucent, cause displacement of teeth 

lateral periodontal cyst

pathology: mostly radiolucent but may have internal septa giving lesion a multilocular appearance (but not really), radiolucent and superior to inf alv canal, cause minimal expansion of surrounding structure

odontogenic keratocysts 

disease with skin lesions, bifid ribs, falx cerebri, temporal bossing 

basal cell nevus syndrome 

pathology: between 8 and 9, very large, well defined and corticated 

nasopalatine duct cyst 

pathology: not a true cyst, common in young pts, vital teeth, associate with cemental osseus dysplasia, scalloped borders, does not cause buccal expansion  

simple bone cyst 

pathology: younger pts, wispy ill-defined septae, extreme expansion of outer cortical plates 

aneuysmal bone cyst 

pathology: dome shaped radiopacity within maxillary sinus 

mucous retention phenomenum 

pathology: concavities in lingual surface of mandible, below inf alv canal, well defined 

developmental salivary gland depression, Stafne defect 

localized change in normal bone metabolism,replacement of cancellous bone by fibrous tissue 

fibrous dysplasia 

monostatic

effect 1 bone

pathology: young pt, ground glass, posterior maxilla, enlarge alveolar process, unilateral face swell, growth stop after adolescence, sup displacement of inf nerve canal

fibrous dysplasia 

on this radiograph, this causes a ground glass appearance and peau d’orange, and superior displacement of the inf nerve canal 

fibrous dysplasia 

pathology: middle aged women, african american or asian, vital teeth, large, expansion of alveolar process 

periapical cemental dysplasia 

this is only seen under max or mand anteriors 

periapical cemental dysplasia 

pathology: cotton wool with well defined border, bilateral on both jaws, associated with simple bone cavity (AA and asian women)

florid osseous dysplasia

what imp for treatment for florid osseous dysplasia

avoid biopsy and elective tooth extraction (radiograph is end point of diagnosis)

pathology: wispy internal and radiolucent border, will displace teeth and cause reabsorption

cementoosifying fibroma

imp for treatment of cementoosifying fibroma 

have to do surgery bc it is a benign bone neoplasm 

pathology: wheel spoke pattern at bottom of tooth root, tooth vital even though it ill cause reabsorption of root

benign cementoblastoma

pathology: post menopausal women, bony trabular pattern with no defined border and no expansion

focal osteoporotic marrow defect

pathology: vital tooth, asymp, in mand 1 PM to 2 M range, radioopaque with well defined border 

focal idiopathic osteosclerosis 

what disease has elevated levels of alkaline phosphatase

pagets

pathology: younger pts, painless swell, purple overlying mucosa, wispy septae

central giant cell granuloma

what are 3 examples of pseudocysts 

stafne, simple bone cavity, aneurysmal bone cyst 

pathology: develops early childhood, painless bilateral enlargement of lower face

cherubism

_ regresses with age (so dont have to treat)

cherubism 

a benign tumor looks like what on radiograph 

mostly radiolucent, has borders

a malignant tumor looks like what on radiograph

always radiolucent except for breast, prostate and osteogenic sarcoma, ill-defined, make root spikey

onion skin is associated with

benign

sunray is associated with 

malignant (osteosarcoma) 

what are the differences between how a benign tumor will effect the IAN versus how a malignant tumor will?

benign: displace canal

malignant: invade and destroy canal, sensory effects

what is the most common odontoblastic tumor

ameloblastoma

pathology: benign mixed tumor (instead of tooth—>become lesion), can be a target lesion

odontoma 

both ameloblastic fibroma and ameloblastic fibrodontoma are associated with unerupted teeth, which one is seen in a younger population (0-10)

ameloblastic fibroodontoma 

pathology: often see in the anterior (usually impacted canine), snowflake calcifications 

adenomatoid odontogenic tumor 

pathology: at apex of tooth usually in mand, painful but tooth vital, root reabsorb, wheel spoke pattern and radiolucent border 

benign cementoblastoma 

pathology: frontal sinus

osteoma

most common malignancy of oral cavity

SCC