At the mention of dental treatment some children become overwhelmed by anxiety whereas others appear to take the news in their stride. Sometimes when anxious children attend dental treatment, they appear to cope, contain their fears, and passively submit to treatment, whereas others angrily refuse to open their mouths and a third group of children exist who seem to just 'tough it out' no matter how disagreeable or frightening dental treatment becomes. The question remains: why do children react so differently to dental treatment?