sentence: Tartar makes gums unhealthy and makes more bacteria grow on the teeth.
sentences_before: Plaque is the soft white substance that forms on teeth when they are not cleaned. It has bacteria in it that hurt enamel. If plaque is not cleaned off, after 2 days it can become tartar.
concept_name: tartar
headings: Tooth Disease of teeth
categories: Basic English 850 words Teeth