Clinical Photography as a Tool for Better Diagnosis and ... · Canon EF 100mm f/2.8 Nikkor 85mm f/3.5 Micro-Nikkor 105mm f/2.8 Weight Suggested Cost 15 oz 25.4 oz $599 $984 21.2 oz

Glenn D. Krieger, DDS, MS, FAGD

© 2011 The Krieger Continuum

[email protected] www.dentalphotography.blogspot.com

Clinical Photography as a Tool for Better Diagnosis and Case Acceptance

Copyright 2013 Krieger Continuum

§ What do you do before the exam?§ After the exam, how do you determine the

treatment plan?§ How do you explain to the patient what their

next step is?§ Do you have a clear, repeatable process to

educate and motivate patients towards carethat is in their best interests?


Things one must think about for better case acceptance using photography

Digital Co-Diagnosis

A process whereby the patient helps diagnose the case themselves before any treatment is

presented


What is the process for success with digital co-diagnosis?

• Consultation

• Exam

• Casts and Images

• Review of Findings


Consultation What is the goal?


Exam What do we do differently?


Casts & Images How do we get there?


Review of Findings How does it work?


There are a number of factors to consider:

•Composition

•Lighting

•Camera Equipment

•Camera,Flash,Lens

•Dental Equipment

•Mirrors, Retractors


Nikon R1 Macro Speedlight

Wireless Less bulky

Less controls to manage

If one likes the flash, but doesn’t shoot a Nikon, the R1C1 can be adapted to almost

any camera. Don’t forget to pop up the built-in flash or

the R1 will not fire

CanonMacro Twin Lite MT-24EX Wired Bulkier

More controls to manage

R1 Flash Setup


Comparable Nikon and Canon Flashes Compared

Nikon D7200 Canon EOS 80D

Camera Bodies

Weight Cost

730 gms765 gms

$899 $999

Canon EF 100mm f/2.8

Nikkor 85mm f/3.5

Micro-Nikkor 105mm f/2.8

Weight

SuggestedCost

15 oz 25.4 oz

$599 $984

21.2 oz

$599

Lenses

The Histogram

§ We need to understand the histogram inorder to understand how light is seen bythe camera. If we master the control oflight, our images will look perfect.

§ The histogram gives a diagrammatic viewof how the light entering the camera isprocessed by tone.


All of the tones of the image are captured in the histogram with pure white on the right and pure black on the left.

Pure White Pure

Black

Everything in the middle are the mid-tones such as red, green and blue.


We want to shoot all of our images with the highest peak centered or slightly left of center, or slightly underexposed (darker). This gives us the best chance to capture a great image.


The higher the “f-stop”, the less light is allowed into a camera, and the darker the

image will appear.

So, if the peak in the histogram is too far to the left, that means that our image was too ____, and we want to make the “f-stop” ____, to let in _____ light.

If the peak in the histogram is too far to the right, that means that our image was too _____, and we want to make the “f-stop”______, to let in ____light.

Think of it like you would sunscreen…

If there’s too much bright sunlight, we use a higher SPF. A little darker, we use a lower SPF.


This is an example of an image taken with a

low “f-stop” and aweaker flash setting.

This is an example of an image taken with a

higher “f-stop” and astronger flash setting.


A proper flash for dental use should have adjustments for at least M (Full power), M1/4 and M1/32. Some allow for even more options than that.

You see, the higher the “f-stop”, the greater the depth of field.

So, if we take an image with the most flash, “M”, and have to turn our “f-stop” way up, we’ll have

great depth of field.

But, if we decide to take the same photo with a flash setting of 1/32, letting in only a little light,

we’ll have to turn the “f-stop” way down and the depth of field is greatly reduced.


ISO Setting • The ISO setting is the camera sensor’s

sensitivity to light.

• The higher the number the greaterthe sensitivity

• ISO 200 is an excellent setting for thedental setting


Image type • Choices are generally TIFF, JPEG or

RAW

• Also have a choice of Large/Fine

Other Settings • White Balance

• Aperture Priority


Mirrors

§ Rhodium coated is the standard§ Traditional mirror design makes it

difficult to capture ideal images


§ Newly designed mirrors make it easier to capture exquisite images with less discomfort to patients

§ Can be ordered from The Krieger Continuum


Retractors

§Can be plastic or metal§ Personal preference§Can also be ordered from Continuum


Appendix

24

Approximate Starting Points for Flash and f-stops

Type of Image Flash setting f-stop Magnification

Full Face (smile,repose or profile) M 14 ~1:10 Smile or Repose (close up) ¼ 25 1:3 Retracted (Closed or Open) ¼ 32 1:2.5 Max or Mand Occlusal ¼ 25 1:3 Maxillary Front 6 ¼ 45 1:1.8 (Use black bkgrnd) Mandibular Front 6 ¼ 40 1:1.6 (Use black bkgrnd) Lateral arch ¼ 36 1:2.25 Max 6 Occl ¼ 36 1:2 Mand 6 Occl ¼ 36 1:1.8 2 Centrals(Characterization) 1/32 32 1:1 2 Centrals(Normal) 1/32 29 1:1 Single tooth (mirror) ¼ 57 1:1


Stellar Lighting Systems 18” Ring Light

17


2 Choices for Black Backgrounds

18


DIGITAL LIGHTHOUSE WWW.PHOTEKUSA.COM

19



Visit us at www.KriegerContinuum.com

[email protected] www.dentalphotography.blogspot.com

Documents

Clinical Photography as a Tool for Better Diagnosis and ... · Canon EF 100mm f/2.8 Nikkor 85mm f/3.5 Micro-Nikkor 105mm f/2.8 Weight Suggested Cost 15 oz 25.4 oz $599 $984 21.2 oz