A cracked Invisalign aligner can interrupt the progression of your orthodontic treatment. These trays are precision medical devices designed to exert specific forces for alignment. While minor damage can be managed temporarily, any compromise to the aligner’s structural integrity requires prompt action. The primary goal of any temporary measure is to maintain tooth position and prevent irritation until a replacement can be secured.
Assessing the Severity of the Damage
The first step is to carefully inspect the aligner to determine the nature and extent of the crack. A minor crack is generally defined as a hairline fracture or a small rough edge confined to the periphery of the tray. If the damage causes only slight discomfort or is located away from the tooth surfaces, you may be able to continue wearing the aligner cautiously.
Damage becomes serious if the crack runs across the occlusal (biting) surface of the tray. Major damage also includes instances where the tray is split into two separate pieces or where the crack compromises structural integrity. A severely damaged aligner can apply uneven pressure, risking unintended tooth movement or injury to the mouth and gums. If you identify major damage, stop wearing the tray immediately and store it safely.
Safe At-Home Temporary Smoothing
If the damage is minor, such as a small, sharp point irritating your cheek or tongue, you can attempt a temporary fix for comfort. The safest tool for this purpose is a clean, fine-grit nail file or an emery board. Only file or smooth the rough edges causing oral irritation, using gentle, controlled motions.
The intent of this smoothing action is solely to improve comfort, not to structurally repair the aligner. Be careful to smooth only the jagged plastic and avoid altering the overall contour of the tray that wraps around the teeth. Changing the aligner’s shape can interfere with programmed tooth movement, potentially setting back your treatment timeline.
Avoid using household glues or adhesives like superglue to attempt a repair. These products contain toxic chemicals that are not safe for oral use. Even dental adhesives are generally not recommended because their uneven application can disrupt the precise fit of the aligner. The goal remains temporary comfort while preparing for a professional solution.
When Professional Replacement is Required
Regardless of the severity, contact your orthodontist as soon as a crack is discovered. For major damage, or if temporary smoothing does not resolve the discomfort, professional replacement is required to maintain the treatment path. The orthodontist will assess the damage and determine the necessary next step based on your treatment cycle.
Interim Solutions
While waiting for a new aligner, the orthodontist will often advise you to wear the previous stage aligner if you still have it. Wearing the previous tray helps hold the current position of the teeth, preventing them from shifting back. If you are near the end of the prescribed wear time for the current aligner, your provider may instruct you to move on to the next tray in the series.
Replacement aligners are prescription medical devices ordered directly from the manufacturer by your provider. Costs for a single replacement tray often range from approximately $75 to $300, depending on your provider’s policy and treatment plan specifics. Prompt communication ensures the quickest possible turnaround time, minimizing delays in your overall alignment process.