Clinical/dental stuff Flashcards
Roles in radiology
Referer
Operator
Practitioner
Air spaces and soft tissues that can be seen on a radiograph
Nasal cavity glossopharynx, nasopharynx, oropharynx Soft palate Dorsum of tongue Ear canal Epiglottis
Other dental imaging techniques
Radiographs
Sialography - for salivary glands, inject contrast first.
CT - 3D and better detail but more x-rays
CBCT
Intra-oral pictures setting
1/32 f-stop bc want a large depth of focus/small aperture.
1/200s shutter speed so the picture isn’t blurry
Focus on posterior margin on U2s.
Ring flash so it’s not in patients eyes
Extra-oral picture settings
f/5.6 f-stop
Indirect flash to stop red-eye etc.
What the patient wants from their impression material
Nice smell and taste Non toxic Sets quickly and is easy to remove No retakes Small tray
What the dentist wants from their impression material
Cheap Neutral smell Easy to mix/prepare Creates good quality impressions Reasonable working time Not toxic and no retakes Easily disinfected
Alginates
An elastic material so can be used for people with teeth.
Spray adhesive onto the tray before using. Mix powder and water according to the right proportions - affects setting and usable time.
Properties of alginate
Cheap
Set working times
Hydrophilic and elastic
Dust free powder
Poor surface retention so not good for crowns, etc.
Tears and permanently deformed easily
Hard to store because gains/loses water easily
What instrument is used to extract teeth
Extraction forceps
What is a luxator
Periodontal ligament knife.
What is articulating paper
Testing the occlusion after a restoration etc
What are diamond burs used for
Crown prep and shaping composition
What is a Williams probe
Perio probe
What is a cavitron tip
Ultrasonic scaling
