When does teething start, and how much does timing vary?
Quick answer
Many babies start getting teeth around six months, but timing varies and can be earlier or later. Consider overall development rather than judging a problem by comparison with another baby alone.
Details
What might I notice?
Sore gums, extra drooling and chewing may occur. Lower front teeth are often among the first to appear. Discuss concerns about eruption or development with a clinician or dentist.
When the first tooth appears
Start brushing with an age-appropriate amount of fluoride toothpaste and arrange the first dental visit. Do not automatically attribute fever, diarrhoea or lethargy to teething; signs of illness need consideration separately from tooth eruption.
Related question: Does teething cause fever in babies?.
Note: This answer is for educational purposes and does not replace a consultation with a specialist who examines your case in person. Do not use it for self-diagnosis.