1) What is the main cause of tooth decay? a) Plaque b) Not brushing c) sugar d) all of the above 2) What ingredient in toothpaste can re mineralise enamel? a) Fluoride b) mint c) Foam d) aloe vera 3) When should we visit our dentist? a) When we like b) never c) every 6 months d) when we are in pain

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