JAVMA Dx Dental Imaging Flashcards
What is depicted in this photo? What can this be mistaken for?
Carnassial Tooth Malformation: Caused by deepening/infoldings of the enamel organ into the dental papilla prior to calcification - does not communicate with external enamel
Mistaken for Dens Invaginatus: Communicates with the external enamel
What is depicted in the photo?
Comminuted Fracture of the Left Mandibular Rams and condylar process with osteomyelitis, septic arthritis
What are DDx for the image shown?
1, Ameloblastic fibroma (in image shown)
a. uncommon in cats, <3% of feline oral neoplasms
b. odontogenic tumor from epithelium/mesenchyme or both
- Feline inductive odontogenic
tumor (FIOT)
a. <3 years of age, rostral maxilla, infiltrative
What is the primary DDx based on the imaging? (no periodontal pockets)
Primary hyperparathyroidism
High ionized Ca, normal/low PTH
Oral appearance: ground glass of trabecular bone
What is the pathology present?
101 is nonvital with a periapical cyst present.
Periapical cyst occur with nonvital teeth
What are DDx for the image below? What was the Dx based on histopath?
- Osteomyelitis based on histopath (check for bacteria and fungus)
- Oral neoplasia
What species?
What is present on imaging?
Equine
Nondisplaced comminuted fracture of the condylar process of the right mandible
What are the pathologies present on the image?
- Soft tissue attenuating mass in the right nasal cavity with assoc with lysis of the nasal turbinates and surrounding structures
- periapical bone lysis with the maxillary M1
What are DDx for the pathology seen?
What was the Dx?
DDX: CAA, OMM, OSCC, FSA, OSA
Dx:
Incisor: POF
Max PM3: OSA (mesenchyme origin)
What is the pathology present?
Root fracture of the 304**
or
Subluxation of the 304 with nondisplaced fracture of the alveolar bone
What is the pathology seen?
Max PM3 is nonvital with external inflammatory root resorption and periapical lesions
What is the pathology present?
Impacted right mandibular canine tooth, bilaterally first PM
Left mandibular M1 is partially erupted through bone (not soft tissue) with dilacerated roots
What pathology is present?
204 is nonvital, arrested development because a complicated crown fractures is present with secondary focal periodontitis
What pathology is present?
Foreign body around the 404 - elastic elastic band
What abnormality is present?
Supernumerary tooth (either Incisors or PM1)
What pathology is present?
Enamel defects of PM4, M1, M2
Periodontal and endodontic disease with secondary osteomyelitis
sclerosis
What are two DDx?
What did this turn out to be?
- FIOT (feline inductive odontogenic tumor) based on histo
a. odontogenic epithelium and dental pulp like ectomesenchyme - Dentigerous cyst because of unerupted tooth
What is the pathology present?
Sialolith with secondary sialoadenitis
U/S - marked dilated echogenic fluid filled left paratoid duct with sialolith
What pathologies are present?
Fragments of missing Max incisors, PM1
Retained maxillary canine teeth (right is displaced)
Malformation of I1, I3, PM1
Odontodysplasia - imperfect development of enamel/dentin
What are DDx?
What was the Dx?
Dx - recurrent keratinizing odontogenic cyst
DDX: development or chronic inflammatory odontogenic cyst
What species?
What are the pathologies present?
Monkey
204 - PA/P, PE, T/NV
304 - PA/P, PE, T/NV
404 - PE, T/NV
What are the pathologies present?
Dens Invaginatus (maybe v CTM) with endodontic disease
What is the pathology present?
Mandibular molar 1: PA/P, osseous fragment (moth eaten) bone sequestrum and chronic osteomyelitis
What is the pathology present?
Dx?
loss of nasal turbinates
geographic bone loss
large soft tissue attenuating mass occupying the right nasal cavity
Nasal adenocarcinoma
What is present?
Severe odontodysplasia
Impacted 404
What pathology is present?
Complicated crown root fracture of the mandibular M1 with PA/P
Primary endo with secondary periodontal lesion
What is present?
304 - Previous RCT, missing RE
EIRR with odontogenic cyst i.e. periapical cyst because tooth is T/NV
What pathology is present
Unknown origin or a perio and endo lesions
Class 1 - Primary endo, Secondary Perio
Class 2 - Primary perio, Secondary Endo
Class 3 - Primary endo, Primary perio
What pathology is present?
DDx?
Dx?
Poorly defined region of increase radiopacity, loss of nasal turbinates
DDx: OSA, chondrosarcoma, osteoma, odontogenic neoplasms, MLTB
Dx: MLTB - Multilobular Tumor of the Bone
What are DDx? What is the pathology present?
Expansile mass lesion with bone density, mutliloculated, non contrast enhancing
DDX: odontogenic cyst or tumor
Dx: Undetermined odontogenic cyst
What pathology is present?
104 - Root fracture, EIRR, luxated, T/NV
What pathology is present?
Supernumerary maxillary M3
Concrescence is present (teeth joined by cementum)
What pathology is present?
Right TMJ osteolysis of the lateral margin of the mandibular head of the condylar process
Septic arthritis
CT - Subchondral osteolysis
What pathology is present?
Buccal bone expansion
Periodontal disease
Extrusion
What are DDX?
Dx?
Dx: POF
DDx: focal fibrous hyperplasia, POF, CAA
What pathology is present?
Multiple comminuted depression fractures: maxilla, nasal, frontal bone: nasal septum
What is the pathology present? Dx:
Left mandibular osteolysis geographic bone loss with destructive osseous lesions, well defined regular and irregular borders
Histo: OMM
What pathology is present?
Sialolith located in the left parotid duct
Complicated crown root fracture of the maxillary PM2
What pathology is present?
204 - T/NV, EIRR
What pathology is present?
204 - AB, PA/P, EIRR with sinus tract
What pathology is present?
Developmental and acquired abnormalities
Incomplete formation of the apical infundibula of the permanent Right Maxillary PM2
What pathology is present?
Displacement/Luxation of the incisor into the nasal passage
What pathology is present?
Tooth piece Foreign body in nasal passage near 204
What are DDx?
What was Dx?
DDX: chondroma, odontoma, osteoma, osteochondroma, exostosis of the jaw CAA
Dx: Osteoma
What pathology is present?
Condensing osteitis/ osteosclerosis
Subperiosteal osteomyelitis with secondary endodontic disease of the mandibular PM3
What is the pathology?
What can it be mistaken for?
Osteosclerosis - opacities not associated with tooth roots/PDL intact
Mistaken for condensing osteitis/sclerosing osteitis - associated with chronic inflammation/pulpitis; may involve the PDL
What pathology is present?
Sinus tract
Parulis from the right mandibular M1, endodontic disease
What are DDx?
What was the Dx?
DDx: dentigerous cyst with secondary infection and unerupted PM1, neoplasis
Dx: OSCC
What is the pathology present?
Bilateral increase space with tooth bud of 309
Bilateral radiolucent lines = bilateral incomplete minimally displaced irregular transverse fracture at 309, 409
What is the pathology present?
malformed teeth, T/NV/ PA/P
Dilacerated roots
perio-endo lesions
Suspected Dens invaginatus
What is the pathology present?
Moderate abrasion
104, 204 - endodontic disease, T/NV, PA/P, EIRR (104)
What is the pathology present?
Dental Caries
DDX?
Dx?
DDx: Neoplasia vs osteomyelitis
Dx: Well differentiated carcinoma
What is the pathology present?
What is the species?
Rabbit
Facial and Jaw abscessation
apical enlargement of the mandibular PM/M
What is the pathology present?
Enamel hypoplasia
Root hypoplasia
Perio-endo combo lesions
Odontodysplasia - imperfect development of enamel and dentin
What is the pathology present?
Unerupted mandibular PM4, displaced, dilacerated, cyst-like structure, tooth-like structures
Dx: Compound odontoma
Mixed odontogeniv tumor epithelial/mesenchymal
What pathology is present?
PM - Periodontitis, EIRR
Incisor - RTR
What pathology is present?
DDx?
Dx?
Permeative bone loss, extrusion of 404, sunburst like periosteal reaction
DDx: Osteomyelitis or neoplasia
Histo: osteomyelitis
What pathology is present?
DDx?
Dx?
Substantial bone lysis and sunburst periosteal reaction 304
DDx: CAA, FSA, SCC, MM (amelanotic), osteomyelitis
Dx: CAA
What pathology is present?
Tooth resorption
Type 1 TR: Inflammatory
Type 2 TR: Replacement
Stage 1-5
What pathology is present?
Enamel defects (hypoplasia) T/NV Primary endodontic disease with secondary periodontal disease
What pathology is present?
Suboptimal shaping, voids in the RE, suboptimal obturation
PA/P
What pathology is present?
Previous RCT, suboptimal shape, development of a periapical cyst
What pathology is present?
Unerupted tooth with a dentigerous cyst
What pathology is present?
severe periodontal disease of the mandibular M2, M1, PM4
What species?
What pathology is present?
Squirrel
Mass extended from roots of incisors
Histo = compound odontoma (denticles)
What species?
What pathology is present?
Llama
Histo = Ameloblastoma
