Although patients with any of the conditions listed below can be treated with clear aligners, it can make treatment more complex. Be sure and indicate in your prescription form if you are treating a patient with any of these conditions. Here are some of the reasons for added complexity:
- Crowns usually can't retain engagers.
- Bridges can create undercuts that may make it difficult to insert or remove the aligners due to too much retention.
- Dentures are designed to fit together with the opposing arch. If any of the teeth move, the dentures will probably need to be replaced or adjusted.
- Partial dentures will most likely need to be replaced, because moving teeth in anarch with a partial denture can cause it to not fit. If you want to proceed with treating a patient with a partial denture, then you will need to take an impression or intraoral scan without the partial. We would advise not to wear the partial while in treatment, as it could interfere with movements.
- Implants cannot be moved because they are fused to the bone. Make sure you have noted all implants in your prescription form so that no movement is planned for that tooth, putting the implant at risk.