Teething is a normal developmental process where the tooth erupts from its crypt to pass through the gum to the oral cavity.
Dr Peninah Musyoka, a paediatrician at Machakos Children's Clinic, says most babies begin teething from the age of 4-6 months after birth, where you can see white tissue on the baby's gum which should not be taken to be pus but teeth that are waiting to erupt.