smile blog

Blog Docbraces

August 14, 2019

How To Keep Track of When Your Child’s Adult Teeth Come In

An odd pattern of tooth eruption can cause more orthodontic problems for a child than is seen when the permanent (adult) teeth come in several months too early or too late. If your child’s teeth do not come in as expected, his or her bite and smile could both be affected. Studies show that changes in these patterns can directly affect how your child’s teeth develop.

Keep Track of When Your Child’s Adult Teeth Come In

Knowing the order that your child’s adult teeth come in is very helpful for your Docbraces’ orthodontist. This information can be used during the creation of your child’s personalized orthodontic treatment plan. Also, the order of eruption can help the orthodontist determine if your child needs to start orthodontic treatment early on, or if treatment can wait until he or she is a bit older.

The Baby Teeth Directly Affect How the Adult Teeth Come In

Dr. CFA Moorrees was a renowned dental researcher: Dr. Moorrees found that if any kind of disruption occurs as the primary teeth (baby) are falling out and the adult teeth are coming in, the normal transition of the teeth (from primary to permanent), as well as the normal development of the child’s occlusion, may be affected.Occlusion is the dental term that refers to the contact made between the teeth on the upper and lower jaws. For example, when an individual chews or bites down on something.

The Normal Sequence of Permanent Tooth Eruption

The American Dental Association (ADA) offers an easy-to-read, online chart that shows the order and the age when a child's adult teeth should be coming in. This chart will be very helpful for parents who choose to print a copy and use it to keep track as their child’s adult teeth come in.

The ADA's Breakdown of the Normal Adult Tooth Eruption Pattern

Upper Teeth (Upper Arch)

  1. First molar — 6-7 yearsFirst Molar
  2. Central incisor — 7-8 years
  3. Lateral incisor — 8-9 years
  4. First premolar — 10-11 years
  5. Second premolar — 10-12 years
  6. Canine — 11-12 years
  7. Second molar — 12-13 years
  8. Third molar (Wisdom tooth) — 17-21 years

Lower Teeth (Lower Arch)

  1. First molar — 6-7 years
  2. Central incisor — 6-7 years
  3. Lateral Incisor — 7-8 years
  4. Canine — 9-10 years
  5. First premolar — 10-12 years
  6. Second premolar — 11-12 years
  7. Second molar — 11-13 years
  8. Third molar (Wisdom tooth) — 17-21 years

How Different Eruption Patterns Can Affect a Child's Bite

For several decades, studies have been done to determine how the different patterns of tooth eruption affect an individual's bite. The studies have shed some light on the expected outcomes: Some of the findings can be found below.

The Upper Arch Canines and the Premolars

If the canine in the upper arch erupts before the first premolar does, the second premolar may become impacted (not erupt) or if it does erupt, crowding may be present.If the upper arch canine and the first premolar erupt simultaneously, the canine may be pushed outward toward the lips. More complications can result if the upper arch molar also moves forward and limited space is available.Another possible problem the researchers noticed is when the canine comes in before the first premolar and there is not enough space, the canine may push the first premolar out of the arch or push the incisors that are on the upper arch to make room. If the primary second molar is in the process of falling out, second premolar impaction is possible.

The Second Molars Erupt Before the Premolars

If the second molars come in before the premolars do, the second molars' eruption may put force on the permanent first molar, pushing it. Once the permanent first molar moves, the amount of space available for the second premolar is reduced. This could block the second premolar, making it difficult or impossible for it to erupt.

The Importance of the Canine’s Place in the Pattern of Eruption

The eruption of the canine effects the contact points that are formed between it and the lateral incisor. According to researchers, incisor crowding is a common occurrence when the canine erupts towards the cheek.When crowding is severe and arch size is lacking, the canine may have difficulty breaking through the gum. This inability to break through may be due to the primary first molar, or the primary first molar may have fallen out too soon, leading to the first premolar erupting before the canine. If this happens, the first and second premolars could cause canine impaction by occupying a leeway space.At Docbraces, we are dedicated to providing each patient with personalized care. Whether you are interested in straightening your teeth with one of the innovative new methods we offer, or you notice that your child is having some dental issues, we can help. According to the American Association of Orthodontists, children should be evaluated by an orthodontist once they turn 7.At Docbraces, your initial consultation is complimentary and so are second opinions. Our goal is to care for you and your family, which is why we offer family discounts, no-interest payment plans and flexible hours. Call us today at 1-866-639-7695 to schedule your free consultation. We have offices located in Halifax, Dartmouth, Moncton, Truro, Charlottetown, London, Ottawa and Summerside.

related categories: