Clinical Photography Flashcards
Why take tx records?
- tx planning
- pt acceptance
- monitor progress
- medico-legal
- marketing
- research
Types of Clinical Photos
EXTRA-oral Photos
INTRA-oral Photos
Extra-oral Photos
- smile aesthetics
- midline deviations
- lip thickness and length
- nasolabial angle
- facial symmetry
- facial proportions
- facial convexity
Intra-oral Photos
- oral hygiene
- dental status
- molar relationship
- canine relationship
- overjet/overbite
- crowding/spacing
- tooth anomalies
- arch form
Point & Shoot Strengths
- price
- size and weight
- LCD framing
DSLR Strengths
- image quality
- MANUAL CONTROLS
- DEPTH OF FIELD (DOF)
- speed
Point & Shoot Weaknesses
- LIMITED MANUAL CONTROLS
- LESS ADAPTABLE (e.g. lens type)
- slow (i.e. shutter lag)
DSLR Weaknesses
- price
- size and weight
- complexity
Purpose of deep DOF in dental photography
to keep all teeth in sharp focus
to achieve this, we need:
- macro lens AND
- manual controls
- -> to set a small aperture
DSLR Lighting
NO! pop-up flash (standard) = distinct shadows
YES :) use ring flash = consistent illumination
The whole system consists of…
> DSLR body
Macro lens
Ring flash
I/O Photos Ideal Settings
> ISO = 100-200
(up to 400 is ok)
> APERTURE = F25
(too dark, decr to F22 / too bright, incr to F29)
> Shutter speed = 1/200 or 1/250 (max sync speed)
> White balance = flash mode
> Ring flash = ~1/4
E/O Photos Ideal Settings
> ISO = 100-200
(up to 400 is ok)
> APERTURE = F11
(too dark, decr to F8 / too bright, incr to F14)
> Shutter speed = 1/200 or 1/250 (max sync speed)
> White balance = flash mode
> Ring flash = ~1/4
Types of I/O Photos
> Frontal view > Mx occlusal > Mn occlusal > Lateral view > Overjet view > Ling/Pal view
Types of E/O Photos
> Frontal view
Lateral view
Oblique view (45 degrees)
