Lecture 12: Dental Radiography: understanding equipment and techniques Flashcards
what wrong
No tooth root in rad- tooth resorption
External tooth looks fine
what is fixed mA and kVP for dental x-ray units and what parameter is changed
mA= 7-10
KVP= 70
Exposure time changed (seconds)
radiation safety: stand __ft away, never hold __, lead and __shield
6ft, never hold plate in mouth, lead and thyroid shield
what is the parallel technique and what teeth used on
face of cone is parallel to tooth and plate, center cone on 1st molar
Only used on caudal mandible
what technique
Parallel technique
what is bisecting teeth and what teeth is it used on
face of the cone is parallel to 1/2 of the angle formed by tooth and plate
Use throughout mouth, except caudal mandible
what technique is this
bisecting angle
what technique
bisecting angle
Identify 1-7 and is this an old or young dog
- Root
- Apex closed
- Pulp- root canal
- Apex opens
- Periodontal ligament space
- Furcation
- Dentin
Younger dog- wide pulp canal
identify 1-9, older or young animal, species and mandible or maxilla
- M1
- Root canal/pulp
- Cementum, enamel junction
- PM4
- PM3
- Alveolar bone ridge/margin
- Furcation
- Apex
- Periodontal ligament space
Older, dog mandible- thinner pulp canal
Identify 1-5, species, mandible or maxilla
- M1
- Furcation
- PM4
- PM3
- Cementum- enamel junction
Cat, left mandible
identify 1-4
- M1
- PM4
- PM3
- PM2
which of the following represents a cat thats 9 months, 2yrs, and 9years
Left- 9 months- large pulp cavity
Middle- 2 years- slightly smaller pulp cavity
Right- 9years- really small pulp cavity
identify if maxilla or mandible and right or left in 1-4
1- right maxilla
2. Left maxilla
4. Left mandible
5. Right mandible
identify 1-4, species, mandible or maxilla,
- M1
- PM4
- PM3
- PM2
Dog, mandible
what wrong and what tx
tooth resorption
Tx: extraction
from older dog, what wrong
- Radiolucency at apex
- Widening of pulp canal- indicates dead tooth and pulpitis- if older should be narrow
- Widening of periodontal ligament
older dog- which normal vs abnormal
left- normal canine
Right: canine with pulpitis- wide pulp canal
what is tx for pulpitis
root canal or extraction
what wrong
alveolar bone loss, periapical abscess
what wrong, species, jaw
fracture and bone loss
Dog, left mandible
What wrong
pulpitis- thick pulp canal on left canine and periapical abscess
Externally purple tooth= pulpitis and dead
what wrong, species, jaw
tooth resorption, cat right maxilla
what Wrong
pulp exposure
