*RHS SmarterDA Notes*

What size receptor is used for children?

Size 0

What size receptor is used for children and adult anterior?

Size 1

What size receptor is used for adult bite wings and periapicals. It is also used for children occlusal imaging.

Size 2

What size receptor is used for longer versions of bite wings?

Size 3

It makes it so only one image is taken.

What size receptor is used for Unique occlusal techniques.

Size 4

What does the Pariapical Imaging Capture?

Crown, CEJ, roots, & surrounding areas

What are PA’s mostly used for?

Diagnosis of periodontal disease, for pathology, endodontic therapy, and implants.

What do Bitewings capture?

The crown, contact of the teeth, and height of alveolar bone of the posterior teeth.

What do bitewings usually diagnose

Diagnosing inter-proximal dental caries

What do vertical bitewings detect?

Early periodontal disease

What degree should the x-ray tube be at for a bite-wing?

10+ degree vertical angulation

What do the pre-molar bitewings include?

The distal half of the canines, both pre-molars, and the first molar

What do the occlusal images capture?

remnants of roots, supernumerary teeth, impacted teeth, fractures, clefting, bone surrounding the teeth, floor or the mouth, sialolith, and shape of arch

Why would you take a occlusal image?

Patient has limited jaw opening

What kind of techniques are used for the paralleling technique

Long cone & right angle

What does the paralleling technique provide?

Less distortion

Why wouldn’t you use paralleling technique?

Patient has too shallow of a pallet.

Mandibular Occlusal Technique:

-Head is tilted back

-Negative 55 degree vertical angulation

-Central Ray is directed through the chin

Maxillary Occlusal Technique:

-Occlusal plane parallel to the floor

-positive 65 degree vertical angulation

-central ray directed through the nose

Cross-sectional Maxillary Occlusal Technique:

-Occlusal plane parallel to the floor

-Beam’s perpendicular to the receptor and between the eyebrows

Cross-sectional Mandibular Occlusal Technique:

-Heads tilted back until the ala-tragus is perpendicular to the floor

-Beam’s perpendicular to receptor, it’s directed inferior to the chin

Buccal Object Rule, aka…

SLOB

SLOB:

Same Lingual, Opposite Buccal

Buccal Object Rule:

-Shows if an “artifact” is lingual or Buccal

-two images are needed: PA/BWX

-Tubehead/ object moves:

•Same direction: Lingual

•Different direction: Buccal

Foreshortening Technique Error:

Too much vertical angulation

Elongation Technique error

Too little vertical angulation

Panoramic Technique Error: Sharks Fin

LED Collar above line

Panoramic Technique Error: Exaggerated Smile

Chin too down

Panoramic Technique Error: Reverse Smile

Chin too up

Panoramic Technique Error:

Mandibular incisors’ roots are blurred

Chin too down

Panoramic Technique Error:

Maxillary Incisors are blurred

Chin too up

Panoramic Technique Error:

One side shows larger

Patients head is twisted

Panoramic Technique Error:

White straight Opacity

Slumping (it’s the spine showing)

Panoramic Technique Error:

Thick and wide Anteriors

Chin’s behind the focal point

Panoramic Technique Error:

Skinny Anteriors

Chin too forward

Chephalometric Projection

-Lateral view of the skull

-Evaluates trauma and facial growth

Lateral Jaw Exposure

-Evaluates the posterior portion of the mandible or lateral areas that are too large for PA’s

-Exposes growth, development, diseases & trauma

Posterior Projection Image

The frontal, ethmoid sinuses, orbits, and nasal cavities

Walter’s Projection Images

Images of maxillary sinus

Cone-Beam Computed Tomography

(CBCT)

-3D Images

-Helps with implant planing, TMJ issues, & soft tissue lesions

-Requires lower radiation dose

Sialography Images

Detects salivary stones and blockages

RAD

Radiation Absorbed Dose

Define RAD:

the amount of radiation that is absorbed by the tissue following an exposure.

REM

Roentgen Equivalent Man

REM

measures the biological effect radiation may have on a patient.

Roentgen

measures the quantity of radiation that produces an electrical charge in the air