An impacted lower second molar is relatively rare, with an incidence of .06-.3%, but when encountered can be the most challenging problem in an otherwise routine orthodontic treatment. Uprighting usually needs to be done as quickly as possible to restore chewing function, placing a premium on efficient mechanics. Unfortunately, since treatment commonly involves individual manipulation of bracket positions, frequent wire changes or bending, or placement of auxiliaries, an impacted lower second molar is difficult to correct with pre-programmed orthodontic appliances such as Invisalign, SureSmile, or Incognito.
This article can only be viewed by JCO subscribers. Subscribers should log in below. You can purchase a subscription to JCO for as little as $223 a year worldwide. You can also purchase access to the entire JCO archive for 1 or 30 days ($30 or $70), or for $10 just this article for one year.
Please log in to your account to proceed. If you do not have an account, please create one.
Dynamic verses Static IP
Please select whether you have a dynamic IP address or a static IP address. A dynamic IP address can change over time while a static IP will never change. You may need to contact your IT administrator to find this out. If you don't have access to this information, you should select the option that you are using a dynamic IP address.
Note: If you do select dynamic IP address, you must have cookies enabled for your browser.