Arresting rampant dental caries with silver diamine fluoride in a young teenager suffering from chronic oral graft versus host disease post-bone marrow transplantation: a case report

BACKGROUND: Rampant caries is an advanced and severe dental disease that affects multiple teeth. This case describes the management of rampant caries in a young teenager suffering from chronic oral graft versus host disease after allogeneic bone marrow transplantation. CASE PRESENTATION: A 14-year-old Chinese boy suffering from beta-thalassemia major was referred to the dental clinic for the management of rampant dental caries. An oral examination revealed pale conjunctiva, bruising of lips, and depapillation of tongue indicating an underlying condition of anemia. The poor oral condition due to topical and systemic immunosuppressants was seriously aggravated, and rampant caries developed rapidly, affecting all newly erupted, permanent teeth. The teeth were hypersensitive and halitosis was apparent. Strategies for oral health education and diet modification were given to the patient. Xylitol chewing gum was used to stimulate saliva flow to promote remineralization of teeth. Silver diamine fluoride was topically applied to arrest rampant caries and to relieve pain from hypersensitivity. Carious teeth with pulpal involvement were endodontically treated. Stainless steel crowns were provided on molars to restore chewing function, and polycarbonate crowns were placed on premolars, upper canines and incisors. CONCLUSION: This case report demonstrates success in treating a young teenager with severe rampant dental decay by contemporary caries control and preventive strategy.published_or_final_versio

在小學中採用維基推行協同教學

把Web 2.0 科技融入主流教育被認為能有效促進學習與教學。 有關應用此科技的研究，特別是維基技術已於小學階段取得了正面的成果。然而，要讓電腦支援的協同學習能夠有效實行，就必須就教學方法作策略性及精心的規劃。本章將提供一個教學設計，以兩項由作者進行的研究作例子，分別在維基平台上進行常識科專題研習和英語協同式寫作練習，以說明如何在小學教室中應用維基。我們同時會為考慮在教學中採用維基的小學教師提出建議