Get It Straight: 4 Possible Complications with Invisalign

March 2, 2026

Invisalign tray.

Invisalign has become a popular choice for straightening teeth thanks to its clear, removable aligners and convenience. While it’s an effective treatment for many patients, it’s important to understand that there can be some complications along the way. Most are mild and manageable, especially with proper care and guidance from your dentist.

Here are 4 possible complications to be aware of.

1. Discomfort and Pressure

It’s common to feel some discomfort when you first start Invisalign or switch to a new set of aligners. This pressure is a sign that the aligners are working to gradually move your teeth into the desired position.

The discomfort is usually mild and temporary, lasting a few days at most. Sticking to soft foods and using over-the-counter pain relief can help during this adjustment period. If pain persists or becomes severe, it’s important to contact your dentist.

2. Poor Compliance Can Delay Results

Invisalign requires a high level of commitment to be effective. Aligners should be worn for 20 to 22 hours per day, only being removed for eating, drinking (anything other than water), and oral hygiene.

If you frequently forget to wear your aligners or leave them out too long, your teeth may not move as planned. This can lead to delays in your treatment timeline or less-than-ideal results. Consistency is key to achieving the best outcome.

3. Increased Risk of Cavities or Gum Issues

Because Invisalign aligners fit snugly over your teeth, they can trap food particles and bacteria if proper oral hygiene isn’t maintained. This can increase your risk of cavities or gum inflammation.

Brushing and flossing after every meal before putting your aligners back in is essential. Skipping this step can allow bacteria to sit against your teeth for extended periods, potentially leading to oral health problems.

4. Lost or Damaged Aligners

Since Invisalign aligners are removable, they can be lost, misplaced, or damaged more easily than traditional braces. Leaving them in napkins, placing them on surfaces, or not storing them properly can lead to accidental loss.

A missing or broken aligner can disrupt your treatment progress if not addressed quickly. Always keep your aligners in their case when not in use and contact your dentist right away if something happens to them.

Staying on Track with Invisalign

While these complications can occur, most are preventable with good habits and communication with your dental provider. Following instructions, maintaining excellent oral hygiene, and keeping track of your aligners can help ensure a smooth experience.

Invisalign offers a convenient and discreet way to improve your smile, but it does require responsibility. By understanding potential complications and taking steps to avoid them, you can stay on track and achieve the results you’re looking for. With proper care and consistency, Invisalign can be a safe and effective path to a healthier, more confident smile.

About the Author

Dr. Gabrielle C. Dizon is a general dentist serving her community in Dallas, TX. A native of East Dallas herself, she earned her Doctor of Dental Surgery degree from the Baylor College of Dentistry, based in her hometown. Dr. Dizon stays current these days through membership in the Central Dallas Chapter of the renowned Spear Education Study Club. She especially enjoys cosmetic dentistry and can give you a beautiful smile with Invisalign treatment. Just head to our website to schedule your appointment or give our office a call at (214) 646-6202.