We treat most malocclusions (bad bites) with braces or clear aligners. But not all malocclusions are alike — some can require extra procedures to achieve successful results.
One such example is when incoming teeth crowd other teeth and cause them to erupt abnormally. The crowding also reduces the space needed to move the misaligned teeth to better positions. To make more room we'll often remove some of the teeth before undertaking orthodontics.
The key is to extract the right teeth. The best candidates are those whose absence will have minimal effect on both appearance and dental function. That's commonly the bicuspids, located right on the edge of the “smile zone” (the teeth most visible when we smile) between the cuspid (eye) teeth and the back molars.
Once we choose and remove the teeth our next concern is to protect the bone at the extraction site.Â The bone in our jaws benefits from the pressure created when we bite or chew. This stimulates new bone cells to form and replace older cells. Without it, as when we have a missing tooth, the amount of bone can diminish over time and affect the success of any future orthodontics.
To prevent this, we take care not to damage the gums and bone removing the tooth. We may also install a graft under the empty socket to encourage bone growth.
If we've removed teeth outside the smile zone, the resulting orthodontics will move teeth into the opened space. In the end, you won't even notice they're gone. Teeth lost or congenitally missing in the smile zone, though, may eventually require a replacement tooth. A dental implant is the best choice, but it should be put on hold for a younger person until their jaw has fully developed.
In the meantime, we can install a spacer or a temporary restoration to hold the empty space and prevent other teeth from drifting into it. This can be incorporated into braces or aligners, or with a removable partial denture or a temporary modified bridge.
Extracting teeth to aid orthodontics first requires a well-laid plan that could encompass several years. The end result, though, can be well worth the time and effort — better function and a new, attractive smile.
If you would like more information on the process of straightening teeth, please contact us or schedule an appointment for a consultation. You can also learn more about this topic by reading the Dear Doctor magazine article “Tooth Removal for Orthodontic Reasons.”
The primary goal of dental care is to preserve teeth. But there are circumstances in which removing a tooth, even a relatively healthy one, could prove best in the long run.
A malocclusion (poor bite) related to crowding might fit such a circumstance. Crowding occurs when the size of the jaw is too small for the teeth coming in. With not enough space, some teeth could erupt out of their proper positions. Removing certain teeth frees up space to eventually allow braces or other orthodontic devices to re-align the teeth.
The teeth most frequently removed are the first bicuspids, located between the cuspid (the "eyeteeth" directly under the eyes) and the back teeth, and the second premolar. Removing these won't normally affect appearance or functionality once orthodontic or cosmetic treatments are complete.
Because of the mechanics of jaw development it might be necessary to perform these extractions several years before orthodontic treatment. This could create another potential problem: the time lag could adversely affect bone health.
This is because bone, as living tissue, has a life cycle with cells forming, functioning and then dissolving, and new cells taking their place. When teeth are chewing or in contact with each other they generate force that travels through the tooth roots to the bone and stimulates cell growth at a healthy replacement rate.
But when a tooth is missing, so is this stimulation. This slows the replacement rate and eventually leads to decreased bone volume. Too much bone loss could create obstacles for orthodontic treatment or a future dental implant.
To avoid this, the dentist will often place a bone graft with processed bone mineral within the empty tooth socket right after extraction. The graft serves as a scaffold for bone cells to grow upon. The graft (plus any other added growth boosters) can help maintain a healthy level of bone volume to facilitate future orthodontic or restorative treatments.
Since targeted extraction for orthodontics is time-sensitive, you should have your child's bite evaluated by an orthodontist by age 7 to see if any action is necessary. The earlier a malocclusion is detected, the more likely a more attractive and healthy smile will be the ultimate outcome.
If you would like more information on correcting poor bites, please contact us or schedule an appointment for a consultation. You can also learn more about this topic by reading the Dear Doctor magazine article “Tooth Removal for Orthodontic Reasons.”