sentence: Some people never grow wisdom teeth.
sentences_before: Babies chew on things to make the pain better. Most children have all 20 teeth by 2 or 3 years of age. At age 6-7 the 'permanent' teeth start to erupt. By the age of 11-12 most children have 28 adult teeth. The last 4 teeth, called 'wisdom teeth' or 'third molars' come in by age 17-21 in most people.
sentences_after: Or they may have only 2 instead of 4.
concept_name: people
headings: Tooth Tooth eruption
categories: Basic English 850 words Teeth