Evaluation of the optimal exposure settings for occlusal photography with digital cameras

Yu Sugawara, Kan Saito, Masaharu Futaki, Masahiro Naruse, Mariko Ono, Ryoko Hino, Yuta Chiba, Makiko Arakaki, Aya Yamada, Satoshi Fukumoto

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


Background and objective: Recently, there have been produced several kinds of camera systems, lighting devices and image processing programs. The intraoral photographs are periodically required in pediatric dentistry, since the oral environment of children changes rapidly and dramatically because of disease, growth, and tooth eruption. However, the suitable settings for intraoral digital imaging have not yet been reported. In this study, single-lens reflex and mirrorless cameras were used with a ring flash, ring light emitting diode (LED), or standard fluorescent lamp to determine the optimal exposure parameters for occlusal photography. Materials and methods: Fifty-six dentists evaluated images of a discolored nonvital central incisor and first molar with recurrent caries and stained fissures clipped from a low-magnification photograph of the adult maxillary occlusal surface reflected in a mirror by using various F-numbers (representing aperture), shutter speeds, and International Organization for Standardization (ISO) numbers (representing light sensitivity). Results: The results showed that F-numbers between 5.6 and 10, shutter speeds faster than 1/30s, and ISO 800 produce the best occlusal images when a 60 mm f/2.8 Macro lens is used. Better images are obtained with ring LED than with ring flash. Furthermore, ISO 3200 is required for low-magnification photography in natural light. Finally, intraoral digital images should be captured under low magnification, because tilted or deflected images can be adjusted by using imaging software.

Original languageEnglish
Pages (from-to)89-96
Number of pages8
Journalpediatric dental journal
Issue number2
Publication statusPublished - 2014
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Pediatrics, Perinatology, and Child Health
  • Dentistry (miscellaneous)


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