Tools of the trade: Nikon D90 camera

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The Nikon D90
The Nikon D90

by Dr Robert Harper, Richmond Fine Dentistry, Richmond, VIC

 

I have a Nikon D300 for personal use and a D90 for my clinical work in the surgery. The D90 is a little simpler but it works just as well. I’ve teamed it up with the Nikon 105mm Micronikkor lens with a maximum f-stop of 2.8. It’s a pretty fast lens and the images are clear and sharp.

 

What’s good about it

I take a series of photos during all new patient examinations and they’re great for aesthetic assessment. There’s also a big ‘wow’ effect when patients see their teeth at 50 times normal size. You don’t have to say anything; they diagnose the problems themselves.

The D90 has a very high resolution of 14 megapixels. This is why I prefer a modern digital camera to an intra-oral camera. The 14-megapixel resolution is orders of magnitude higher than what is available on any intra-oral. The flash is a Nikon Speedlight SB-R200 which is battery driven and radio controlled.

I use Adobe Lightroom V.4 software to manipulate the images. Once a line is drawn from one pupil to the other, you can relate the incisal edge of the teeth to the line of the eyes. They’re meant to be parallel but, of course, they are often not. This image can be used as part of your planning and diagnosis.

 

What’s not so good

You need to use cheek retractors and mirrors so it takes a little more time to set up. There’s also a bit of a learning curve but once the camera settings are right, a good quality image is produced each time.

 

Where did you get it

Digital Camera Warehouse, Northcote, VIC.

 

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