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Interview

Photography in dentistry: Basic equipment, settings and accessories

07.06.2019
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Photography has become a valuable resource in daily dental practice, revolutionizing the way clinicians diagnose, treat and communicate with patients and colleagues. We gave the floor to the expert, Dr. Pasquale Loiacono, who shared tips and tricks for achieving a quality dental image.

Dr. Pasquale Loiacono | Italy

You teach dental photography. What is the question most frequently asked by your audience?
Dr. Loiacono: Surely the biggest question is how to set up the camera correctly. Listening to my audience, I realized setup is really a weak point that generates anxiety; it is as people fear the instrument itself.
 

What is the most basic equipment a dentist needs to create good clinical photos for publications and presentations?
Dr. Loiacono: For basic dental photography, you need a camera with a dedicated macro lens and flash.

In their free time, most people use their mobile devices for taking photos. Is this also an option for dental photography? Or are mobile phones a total “no go?”
Dr. Loiacono: Let's say they’re not 100% "no go" but definitely a less desirable option. The main limitation of mobile phones is their lack of photo uniformity plus the inability to provide RAW format storage (the
only format with legitimate value) and the macro option, thus causing a distortion of the images. The only advantage they could offer is greater focal depth.
 

Which camera brands are used most often?
Dr. Loiacono: I have a preference for Nikon, mwhich for me, as a company, is more concerned with scientific photography. But I have also shown that, with the same settings, Canon offers the same results. Regardless of the brand, you have to ask yourself: "Is this picture acceptable?" The camera becomes an instrument for measuring reality, and all brands produce “measuring instruments.” The device is neutral;
the difference is made through the eye and mind of the person behind the lens.
 

A doctor has bought a new camera for taking good clinical pictures, which initial settings would you recommend?
Dr. Loiacono: The three pillars for a correct scientific photo are correct magnification, depth of field, and perspective. These three pillars must be found in the initial settings.

Any recommendations for accessories such as retractors, mirrors or contrasters?
Dr. Loiacono: Dental photography accessories help produce better pictures. Because they come in contact with the patient’s oral cavity, they should be autoclavable.

Suppose a dentist wants to document a GBR treatment for a publication. What shots should they take?
Dr. Loiacono
: First of all, it is necessary to obtain a basic documentation of the pre-operative state that includes at least the extraoral photos of the face and lips at rest, both frontally and laterally, and the smile in its three positions (light, medium and forced). The area of surgical interest must then be photographed in a perspective that is at least frontal, but if possible, also occlusal, using a mirror, to show the breadth of the bone and gum volumes. If the area to be treated is lateral, lateral mirrors must obviously be used. It is recommended to take intra-surgical photos with the same perspectives and magnifications in order to facilitate comparisons between different therapeutic steps. Regarding the settings, it should be remembered that the more you enlarge, the more you close the diaphragm and extend the depth of field. (Fig. 1) The big problem with surgical photography is bleeding, so it is necessary to carefully prepare the equipment and decide the framing, and only when all the photographic parameters have been established, invite the assistant to aspirate and remove as much blood as possible, while taking the photo as quickly as possible.

Storing pictures can be a challenge. Do you recommend a particular strategy?
Dr. Loiacono:
The strategy is definitely never to trust your own PC (laughs)! I suggest having at least one backup disk activated for daily backup. To this should be added a second backup disk, but kept in a place away from the first one (in case of unfortunate events). Alternatively, other possibilities are obviously network-attached storage (NAS), a file-level computer data storage server connected to a computer network providing data access to a heterogeneous group of clients, or Cloud storage. The physical connections of the hard disks are an additional concern. They often change with new digital development processes, so you always have to update your hard disks.

Do you recommend modifying pictures?
Dr. Loiacono:
We should, of course, modify as little as possible. The photo must already be beautiful and usable to start. Moreover, the idea of acquiring a wrong or ugly photo and thinking there are many corrections possible using software is a misconception. Allowed are magnification and exposure corrections, and it is always better to slightly overexpose. On the other hand, you should not correct perspective and/or depth of field.

Any preference for any particular software?
Dr. Loiacono:
One of the best software packages available on the market for these purposes is Adobe® Photoshop Lightroom. The Develop Mode has all the necessary tools for making the improvements we just discussed. One of the most important features of Lightroom software is the way it treats files. It is not destructive, the original files remain untouched, so you can always return to the original file in the file history. In addition, the software allows working with different file types, in cluding RAW, jpg, TIFF, psd, and png. However, I always recommend working with the RAW file.

What would be a summary of how images should look for lectures or publications and print?

Suppose a dentist wants to document a GBR treatment for a publication. What shots should they take?
Dr. Loiacono:
First of all, it is necessary to obtain a basic documentation of the pre-operative state that includes at least the extraoral photos of the face and lips at rest, both frontally and laterally, and the smile in its three positions (light, medium and forced). The area of surgical interest must then be photographed in a perspective that is at least frontal, but if possible, also occlusal, using a mirror, to show the breadth of the bone and gum volumes. If the area to be treated is lateral, lateral mirrors must obviously be used. It is recommended to take intra-surgical photos with the same perspectives and magnifications in order to facilitate comparisons between different therapeutic steps. Regarding the settings, it should be remembered that the more you enlarge, the more you close the diaphragm and extend the depth of field. (Fig. 1) The big problem with surgical photography is bleeding, so it is necessary to carefully prepare the equipment and decide the framing, and only when all the photographic parameters have been established, invite the assistant to aspirate and remove as much blood as possible, while taking the photo as quickly as possible.

((hierher Bild))

Storing pictures can be a challenge. Do you recommend a particular strategy?
Dr. Loiacono:
The strategy is definitely never to trust your own PC (laughs)! I suggest having at least one backup disk activated for daily backup. To this should be added a second backup disk but kept in a place away from the first one (in case of unfortunate events). Alternatively, other possibilities are obviously network-attached storage (NAS), a file-level computer data storage server connected to a computer network providing data access to a heterogeneous group of clients, or Cloud storage. The physical connections of the hard disks are an additional concern. They often change with new digital development processes, so you always have to update your hard disks.

Do you recommend modifying pictures?
Dr. Loiacono: We should, of course, modify as little as possible. The photo must already be beautiful and usable to start. Moreover, the idea of acquiring a wrong or ugly photo and thinking there are many corrections possible using software is a misconception. Allowed are magnification and exposure corrections, and it is always better to slightly overexpose. On the other hand, you should not correct perspective and/or depth of field.

Any preference for any particular software?
Dr. Loiacono: One of the best software packages available on the market for these purposes is Adobe® Photoshop Lightroom. The Develop Mode has all the necessary tools for making the improvements we just discussed. One of the most important features of Lightroom software is the way it treats files. It is not destructive, the original files remain untouched, so you can always return to the original file in the file history. In addition, the software allows working with different file types, in cluding RAW, jpg, TIFF, psd, and png. However, I always recommend working with the RAW file.

What would be a summary of how images should look for lectures or publications and print?

((hiernach Tab))

Dr. Pasquale Loiacono

Dr. Pasquale Loiacono | Italy

Private Practice, Tropea

Interview conducted by Dr. Giulia Cerino

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Comments

yazad gandhi wrote:

"

Nicely compiled

"

Answer:

Andrew Joseph wrote:

"

On behalf of the organizing committee, we would like to invite your company for a conference on “ 25 th International Dental Week ” which is to be held in Amsterdam, Netherlands on February 17-18, 2020. The theme of the conference is “Creative approaches to Oral Health Care ”. We have special discounts on Group registrations and for most affiliated persons.

Our website is dentalweek.euroscicon.com

Kindly let me know your interest in participation.

With regards

Andrew Joseph

Meeting Producer | EuroSciCon

Email : andrewjoseph401@gmail.com

 

"

Answer:

Vignesh V wrote:

"

Sir, I am a Final year B.E student studying in PSG College of Technology. I am currently doing a project on dental image segmentation using Convolution Neural Networks. I need a plenty of Panoramic X-ray images(dental-dataset). Can you please send some dental images to us to train our network.. It's a humble request sir. Thank you sir.

"

Answer:
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