コクサイ ボランティア カツドウ エノ トクシマ ダイガク ガクセイ ノ サンカ : ホッカイドウ ダイガク シガク ケンキュウカ シュカン JICA クサノネ シエン ジギョウ バングラディシュ シエン ガクセイ チーム エノ サンカ

We reported the result of participation of a student belonging to the University of Tokushima in on international volunteer activity in Bangladesh on 2010 summer. This activity was entitled as "Model project for improvement on Oral Health Care in Rural Area in Bangladesh"，a grass-roots project supported by JICA. A female third-year student (Risa AOKI) of the faculty of dentistry took part in this activity as a supporting team member. This supporting team was organized by the students of Hokkaido University and was composed of Japanese university students from Hokkaido，Hokkaido Health Science，Nagasaki and Tokushima universities. Purpose of this activity was to provide an effective oral health care program that includes motivating and instructing the method of tooth brushing to approximately four thousands students of twelve primary schools in a typical rural area of Mohichall Union of Bangladesh. This program also included motivation and insiruction of the primary school teachers，students of dental colleges and dentists in Bangladesh so that they could participate in this program and carry out similar type of program in future.It was a great experience for us to join the general university students who organized this international volunteer team. This project taught us how to implement a feasible and experienced plan in a low socio-economic condition which was a good example for an international volunteer activity

Periodontal tissue repair after sealing of the gap in vertical root fracture

The aim of this study was to determine whether sealing of fracture gap using adhesive resin through the root canal can prevent inflammation of periodontal tissue, and resealing the incompletely sealed fracture gap from outside can resolve such inflammation in experimentally created vertical root fractures. Vertical root fractures were created in incisor of beagles. In the experimental group, the fracture gap was sealed through the root canal with adhesive resin. After 5 weeks, sites with the clinical attachment level >= 4 mm were further divided randomly into the poor-replanting group and the poor-untreated group. In the poor-replanting group, the tooth was extracted and replanted after resealing the fracture gap with adhesive resin from the outer surface. Sites with clinical attachment level <= 3 mm after 5 weeks were considered as the satisfactory group. The poor-untreated group and the satisfactory group were subjected to no further treatment. The clinical attachment level was evaluated at baseline and after 2, 5, and 9 weeks. After 9 weeks, histological measurements were made to determine the length of the epithelial downgrowth and the area of alveolar bone resorption. The clinical attachment level and the area of bone resorption were significantly smaller in the poor-replanting group and the satisfactory group than in the poor-untreated group (p < 0.05). The results indicate the possibility that periodontal inflammation along the fracture line can be prevented and improved if the fracture gap is sealed