Child Day Care in PHP

We should brush tooth while considering easily soiled areas and areas with a lot of polish leftovers [1]. Easily soiled area means that it often have bacteria that is called food residue or plaque. People should brush tooth every day since the tooth started to grow. That is because if we do not brush tooth, our milk tooth may fall out because of tooth decay before permanent tooth grow and change. That phenomenon makes us get crooked tooth because there is a possibility that permanent tooth grows bent or grows in the different place than it should have. Further, the tooth decay in milk tooth may make the environment where tooth decay prone to occurrence. So we should not leave the tooth decay in milk tooth [2]. However Annual report of school health statistics research reminds that the account for 31.16 percent of kindergarten children have tooth decay and that the account for 44.82 percent of elementary school student have them and the account for 19.15 percent of kindergarten children have tooth where no action has been taken and the account for 21.74 percent of elementary school student have them [3]. There account is larger than the one of junior high school students and the one of high school students. The result reminds that the small children do not brush their tooth enough. Also, the account of those who brush their tooth with awareness of periodontal disease, the account of those who brush their tooth with awareness of caries prevention, and those interested in insurance news in dental hygienist second year are larger than ones in dental hygienist first year and students from other departments [4]. The result shows that those who have received education in dental health are increased interest and knowledge about dental health. That means that helping people learn to brush their tooth correctly makes them brush tooth regularly. So we think that the reason that children do not brush enough is that they do not learn how to brush their tooth. However it is difficult that children understand why they should brush tooth because germs are invisible to the naked eye. So we make it a goal that we make children learn correct toothbrushing habits by teaching them why they should brush tooth to interest them in brushing tooth. We have proposed AR tooth brushing system that promotes oral care habits of children [5]. This system detects tooth areas easily soiled from PC camera image in real time using machine learning technique first, and superimposes germs illustrations to show easily soiled areas. By the way, tooth areas easily soiled do not mean tooth soiled in fact. This system enables children to see germs that can not been seen with the naked eye in fact to increase motivation for children to brush their tooth. However even if children brush their tooth by toothbrush while using this system, the germs illustrations can not be erased. The phenomenon may not give the feeling of brushing their tooth. So it is difficult to improve their toothbrushing habits by this system. We improve the system so that it changes the display of germs following the movement of the toothbrush that children have in this study. The improved system also takes PC camera image as previous system, and detects tooth areas easily soiled using machine learning technique first. Then it shows easily soiled areas superimposing germs illustrations same as previous system. Further, easily soiled areas are tracked and if the area of toothbrush overlap them, the illustrations are erased. This improvement is expected to enable children to enjoy brushing tooth by using this sysetm and to increase toothbrushing guidance efficiency.