Background
Oral health is fundamental to general health and well-being [1] and affects physical and
psychological aspects of the human life [2]. A desirable oral health is crucial for quality of
life, self-esteem and social confidence. It helps individuals communicate effectively, speak,
eat, enjoy food and prevent diseases, discomfort or embarrassment [2,3]. Thus it is argued
that oral health should be seriously considered from childhood. Unfortunately, the prevalence
of dental problems among children is high [4]. Dental caries affects 60-90% of school-aged
children. The distribution and severity of dental caries vary in different parts of the world as
well as within the same region or country [5].