1
2
3
4
5
100

Contrast with many shades of gray

low contrast

100

Occupational MPD

5 rem (5000mrem) 0.05Sv

100

small radiopaque hook like projection of bone located posterior to the maxillary tuberosity region

Hamulus

100

thin radiopaque line that surrounds the sinuses

floor of the maxillary sinus

100

cheek bone composed of dense cortical bone

zygoma

200

Non Occupational MPD

0.1 rem (0.001Sv)

200

triangular radiopacity superimposed over the maxillary tuberosity region. Only mandibular landmark that shows on a maxillary radiograph

coronoid process

200

small radiolucent dot surrounded by the genial tubercles

lingual foramen

200

small oval radiolucency between the roots of the maxillary central incisors (midline of the anterior portion of the hard palate)

incisive foramen

200

radiolucent area superior to the apices of the maxillary posterior teeth

maxillary sinus

300

hole in the bone located on the internal surface of the mandible near midline

lingual foramen

300

small hole in bone on the apical region of the mandibular premolars

mental foramen

300

Radiopaque intersection of the maxillary sinus and the nasal cavity, located superior to the maxillary canine

inverted "Y"

300

True or False:

The long PID is more effective than the short PID

True

300

Used to detect interproximal caries and examining crestal bone levels

bitewings

400

tiny bumps of bone that serve as muscle attachments= sites

genial tubercles

400

ring shaped radiopacity below the apices of mandibular incisors

genial tubercles

400

Radiographs used to detect any abnormalities of the root structure and surrounding bone structure.

Periapicals

400

Infection control: lead apron

disinfect

400

Infection control: non disposable receptor device holder

sterilize semi critical

500

Tube-like passageways that house nerves and blood vessels

what is nutrient canals

500

linear prominence of bone extending from the premolar region to the midline

mental ridge

500

radiopaque bulge of bone posterior to the maxillary third molar region 

maxillary tuberosity

500

J or U shaped radiopacity located superior to the maxillary first molar region 

zygomatic process

500

v-shaped radiopaque projection of the maxilla located between the nasal cavity and the nasal septum

anterior nasal spine