Teething usually starts from three months of age, although some babies miss a tooth during their first weeks of life, or even are born with one or two teeth.
By leaving the teeth these can cause discomfort in the baby which can be alleviated by following some tips
Importantly, the order of appearance of the teeth is variable, without an indication of a delay or anticipation of growth, although certain diseases such as hypothyroidism or nutritional deficiencies can slow the normal teething process.