The Effect of Oral Health Program on Initial Dental Caries Assessment by Oral Photographs Using Polarized Filters

Hirano Keiko, Okazaki Yoshihide, Yosida Emi, Kanao Akira, Du Xiaopei, Rodis Omar, Matsumura Seishi, Shimono Tsutomu, Yamagishi Atsushi, Oshino Kazushi

doi:10.11411/jspd1963.46.1_59

Primary school students (aged 9-12 years old) found with white spots (35 chidren involving 103teeth) were monitored. A program on oral health education and tooth brushing instructions using fluoride-containing dentifrice was done. Oral ph otographs were taken using a digital camera with polarized filters. We reviewed the program using photographs taken to evaluate its effect. The photographs were uploaded to the computer and enhanced through RGB separation (removing the green and the red hues, and leaving blue hues). The surface area of white spots was calculated through the use of an image software. The findings are as follows: 1. At the time immediately bef ore beginning the first check up, the average surface area was 9.3 mm. As the program progressed, the surface area of the white spots decreased. There was a significant difference in surface area at the beginning of the first check up and the second check up, and between the beginning of the first check up and the third check up.2.40% teeth showed a decrease at the second check up and at the third check up.22% of the teeth showed a decrease at the second check up but showed an increase at the third check up.25% of the teeth showed an increase at the second check up but showed a decrease at the third check up.8% of the teeth showed an increase and at the second and the third check ups.3. There was no difference between the surface area of the white spot and the right central incisor, the left central incisor, the right lateral incisor, the left lateral incisor at the first, second and third check ups.

The Effect of Oral Health Program on Initial Dental Caries Assessment by Oral Photographs Using Polarized Filters

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