equine dental radiography Flashcards
what view is this and what can you visulise?
mixillary incisors: dorsoventral view
* place a gag between the cheek teeth so the plate doesn’t get bitten
* corner of plate placed as far back as possible
* visualise - 101-103, 201-203 (+/- 104/204)
what view is this and what can you visulise?
what view is this and what can you visulise?
mandibular incisors: ventrodorsal view
- visulise 301-301, 401-403
what view is this and what can you visulise?
cheek teeth: latero-lateral
* Good lateral = two naso-incisive notches lined up
* visualise - all 6 roots of upper arcade and the lower cheek teeth as wel
* visualise sinus (gas filled) and ethmoid turbinates
* check teeth are super imposed on one another
what view is this and what can you visulise?
maxillary cheek teeth: latero30 degrees dorso-lateral oblique view
* visualise the individual tooth roots of the maxilla - highlights the side closest to the plate
* see how apexes are positioned together. If there is fluid in the maxillary sinus (on side where generator is), details of cheek teeth apexes
what view is this and what can you visulise?
cheek teeth: dorso-ventral view
* heavy sedation - head hanging down low
* plate as far back to neck as possible
* visualise all 6 cheek teeth but upper and lower are super imposed (upper cheek teeth slightly further on the outside than lower teeth)
* nice view of the nasal septum and sinuses
what view is this and what can you visulise?
mandibular cheek teeth: latero45 degree ventral-laterodorsal oblique view
* visualise the individual tooth roots of the mandible - highlights the side closest to the plate
* see how apexes are positioned together, details of cheek teeth apexes, surrounding bone
what view is this and what can you visulise?
what view is this and what can you visulise?
temporomandibular joint: rostro35 degrees lateral 50 degrees ventral-caudodorsal
- Starting from the front of the horse the rostrum. We’re going to go 35 degrees to the lateral,( 35 degrees to the outside) and then 50 degrees ventral. (drop down to the ground 50 degrees.)
- jaw joint is prominence directly behind the eye
what pathology is seen here? what is the opposite?
Brachygnathia - parrot mouth (maxilla longer than mandible)
Prognathia - sow mouth (mandible longer than maxilla)
what view is this and what can you visulise?
what abnormality is seen in this young horses mouth? what is the opposite?
young horse as still has deciduous teeth - is missing two adult teeth - oligodontia (too few teeth)
opposite - polydontia (too many)
what is wrong with this Xray?
horse has overgrowth of teeth, causing mallocclusion of occlusal surface
what is shown in this radiograph?
neoplasia - ossifying fibroma (often in young horse)
what is sheen on this xray?
Equine odontoclastic tooth resorption and hypercemetosis (EOTRH)
- rounded radio dense region is the hypercemetosis
- painful and wobbly teeth, need to be removed, rounded cementum makes them harder to remove
