intraoral radiographic techniques, infection control and quality analysis Flashcards
full mouth series consists of:
14-17 periapical images
4 bitewing images
criteria for quality images
adequate diagnostic quality
completely covers area of interest
least amount of magnification and distortion
optimal density and contrast
what are the 2 types of periapical radiography techniques?
paralleling
bisecting angle technique
in paralleling the image receptor is parallel to what?
long axis of tooth
long source-object distance __________ magnification
reduce
for maxillary periapicals, positioning tube head should face _________ or a ________ vertical angulation
downwards;positive
for mandibular periapicals, positioning tube head should face _________ or a ________ vertical angulation
upwards; negative
cieszynski’s rule of isometry
2 triangles are equal if they share one complete side and have 2 equal angles
if all conditions are met with bisecting angle technique then the is image theoretically:
the same size as the object without distortion
barrier protocol: plastic bags to cover what 3 things?
chair headrest
xray tube head
exposure switch
if something comes in contact with patient body fluid, use ____________
disinfectant
what are the appropriate operator attire to take radiographs?
gloves
face mask
green colored coat
all surfaces not protected with a barrier to be
wiped down with a caviwipe
8 steps of starting a radiographic exam
- get procedure approved by faculty
- explain procedure
- drape patient with apron and thyroid shield
- wash hands, wear gloves and face mask
- examine oral cavity for open sores or tori
- place film in positioning instrument and place in oral cavity
- position PID and go behind the barrier
- press the exposure button
anterior teeth: what size, direction and color
size 1, vertical, blue
posterior teeth: size, direction and color
size 2, horizontal, yellow
___________ are preferred for anterior teeth
periapicals
bitewings are used in detection of what 3 things?
interproximal caries
marginal periodontal bone loss
interproximal calculus
what is the only PID that needs to be configured for right and left?
YELLOW
what are special circumstances for taking radiographs
gag reflex infection trauma mentally and physically disabled patients pregnancy edentulous patients
slob rule
same lingual opposite buccal
the object that moves in the SAME direction is _______: the object that moves in the OPPOSITE direction is _______.
lingual, buccal
by changing _________ on the second image, one can see which object is on the buccal aspect
direction of central ray
