Tooth Eruption

Since our expertise is seeing children, the pediatric dentists at Children’s Dental Fun Zone of Montebello, Eagle Rock, and Fontana often get asked about tooth eruption. Tooth eruption is the process of the tooth entering the mouth and becoming visible as they protrude through the gums. At around six months of age, the lower incisors erupt first. This will be closely followed by the eruption of the lateral incisors, then the canines, the first molars, and finally the second molars. Tooth eruption happens in various stages of early childhood, and is different for each child. It normally occurs between the ages of six months and two years. Dentists at the Children’s Dental Zone in Los Angeles and West Covina have divided the timeline of tooth eruption into three major parts—the primary dentition stage, mixed dentition stage, and the permanent dentition stage.

Generally, humans will have 20 primary teeth and 32 permanent teeth that appear within the three stages of dentition. During primary dentition, the first primary teeth erupt and before long there are 20 primary teeth in the mouth. The mixed dentition stage begins when the first permanent teeth appear, around age six, and this stage continues until the last primary teeth fall out. Finally, the permanent dentition stage is characterized by the absence of primary teeth, when all of the child’s permanent teeth have erupted in the mouth.

Just as the eruption of primary teeth differ from child to child; the timeline for the eruption of permanent teeth is also different in each individual child. Ideally, the first molars erupt when the child is between six and seven years old; the central and lateral incisors when he is about eight years old; canines, premolars and second molars erupt between 9 and 13 years; and the third molars usually erupt between the ages of 17 and 21, or not at all for some children.

At any age, tooth eruption may be an uncomfortable process for children. However, the most common symptoms may be effectively managed without any medication. Warm salt water rinses and softer foods for a couple of days may be all that a teething child needs. The pediatric dentists at Children’s Dental Fun Zone of West Covina and West Los Angles do not recommend the use of Orajel, because, once swallowed, it could numb the child’s throat as well, making it uncomfortable to swallow. If there is any concern about tooth growth or a great deal of pain associated with tooth eruption, it is always a good idea to come in and see a pediatric dentist. In fact, regular dental visits can help assure that the teeth are erupting at the correct time and in the correct position.


« Go back to Patient Education

Schedule an Appointment

  • This field is for validation purposes and should be left unchanged.