Trauma Flashcards
concussion?
injury more to PDL space
see a uniform widening of the PDL– mainly in the apical 1/3
slight hyper-occlusion
more in apical 1/3
luxation
out of place
so PDL is severed – more likely need endo treatment
similar appearance to concussion but may be slightly out of place too
avulsion
tooth is knocked out
complete displacement from the aveolar process
crown fracture
involve?
involves only enamel
horizontal root fracture
location and prognosis implication?
middle or apical is better prognosis
- can maybe regenerate and not get pulpal necrosis
vertical root fracture
facial- lingual point of view usually
patient complains of persistant dull pain (cracked tooth) may want to think?
vertical root fracture
which is more common- condylar neck or head? displacement?
neck
Alveolar Process Fracture *
radio-lucent line!! and more likely to be HORIZONTAL
Anterior Maxilla most common Marked malocclusion and teeth move together Buccal plate more common than lingual Fracture line usually horizontal Generally difficult to appreciate
Radiologic Signs of Fracture
- RL line WITHIN the boundaries of a bone
- s change in the normal outline or shape of a structure - bone or teeth
- loss of continuity of outer border/ gap or STEP DEFECT
- increased RO ina structure / OVERLAP
air space vs fracture
air space continues outside the confides of the bone
two more common fractures within the mandible
- condyle
- angle
- symphasis
lefort I is?
horizontal fracture of the maxilla
maxilla is separated
Will go through the anterior and posterolateral walls of the maxillary sinus and the pterygoid plates.
lefort II
pyramidal fracture – higher than lefort I
usually along zygoma and will involve the inferior border of the orbit and somewhere across midline
Lefort III
more severe going higher - across bridge of nose - above zygomatic - FACE IS SMASHED
