Straighten your teeth without metal braces
Clear aligners are a series of thin, removable plastic trays that gradually move your teeth into place. Each set is worn for about one to two weeks before you switch to the next, and most people wear them 20 to 22 hours a day. They are nearly invisible, so most people will not notice you are straightening your teeth.
At Sigma Dental Clinic on W Foster Ave in Chicago, Dr. Sepi Dashti uses clear aligners (often called Invisalign) for teens and adults with crowded teeth, gaps, and many bite problems. Because aligners come out, you can eat what you like and brush and floss normally. Treatment starts with an exam and digital records to plan how your teeth will move. Monthly payment plans are available through Cherry. Call (773) 506-2033 to book a clear aligner consultation.
At Sigma Dental Clinic in Chicago, IL, we use modern clear aligners, an advanced orthodontic system designed to straighten teeth comfortably and discreetly. Many people know clear aligners as Invisalign. Your aligners are customized using digital technology to deliver precise and predictable results.
Depending on your smile needs, we offer different levels of clear aligner treatment:
Limited treatment is ideal for minor alignment concerns such as small gaps or mild crowding and is designed for shorter treatment times.
Standard treatment treats mild to moderate orthodontic issues, including spacing, crowding, and minor bite problems.
Advanced treatment is used for moderate to complex cases and helps correct tooth rotations and bite alignment with precise digital planning.
Comprehensive treatment is recommended for complex cases that require extensive tooth movement and refinements for full smile transformation.
Our teen clear aligners are a comfortable, discreet option designed specifically for growing smiles.
Clear aligners are discreet and blend naturally with your teeth, letting you smile confidently throughout your treatment.
Crafted from smooth, BPA-free plastic, they’re designed to fit comfortably without irritating your gums or cheeks.
You can easily remove your aligners to eat, drink, brush, and floss, making daily life simple and hassle-free.
Each aligner is custom-made based on a digital scan of your teeth to match your unique smile goals.
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Hady Safa3 days agoTrustindex verifies that the original source of the review is Google.
I went to sigma dental with my sister beacuse she was nervous. She had a great experience with this place. The front desk staff was greate and I had good chat with him.Posted on Google![]()
mahroo safa3 days agoTrustindex verifies that the original source of the review is Google.
I love my new dentist, Dr. Sepi! She is so friendly and welcoming that I felt like I had known her for years. Everyone at the office is really nice and helpful, too. I usually get nervous about going to the dentist, but Dr. Sepi made me feel comfortable and relaxed. I’m really happy I found her and would definitely recommend her!Posted on Google![]()
Morteza Moradi3 days agoTrustindex verifies that the original source of the review is Google.
I had a great experience at Sigma Dental Clinic! Dr. Sepi took excellent care of me, and the office staff were very friendly and welcoming. The office was also clean. Highly recommend!Posted on Google![]()
Büşra Erol8 days agoTrustindex verifies that the original source of the review is Google.
The clinic was very clean—I loved that! Dr. Sepi and her assistant were very friendly and provided excellent service. My 4-year-old daughter felt very comfortable. Also, the man at the front desk was extremely friendly. It was a wonderful experience! Thank you!!Posted on Google![]()
Abbey Gunnell9 days agoTrustindex verifies that the original source of the review is Google.
Incredibly professional, clear, easy to schedule and easy to get to:) Great staff and wonderful Doctor! Everybody is so nicePosted on Google![]()
Payam Sabouni13 days agoTrustindex verifies that the original source of the review is Google.
Excellent experience! The doctor was gentle and professional, and I didn’t feel any pain during the filling or teeth cleaning. Everything went smoothly, communication was great, and the staff was very welcoming and hospitable. Highly recommend!Posted on Google![]()
Alex26 days agoTrustindex verifies that the original source of the review is Google.
Very friendly, helpful staff and all around wonderful experience!! Definately recommend coming here.Posted on Google![]()
Maya C31 days agoTrustindex verifies that the original source of the review is Google.
Best in the town! Doctor Sepi took her time and was great.Posted on Google![]()
Alison Wyatt36 days agoTrustindex verifies that the original source of the review is Google.
Dr Sepi Dashti is a wonderful dentist who makes going to the dentist enjoyable which is almost unfathomable. If you have anxiety over going to the dentist then this is a comfortable alternative to other options in the area. Highest recommendations! 😁Posted on Google![]()
Andy Wagner41 days agoTrustindex verifies that the original source of the review is Google.
Had a cleaning at Sigma Dental today and was super impressed. The front desk staff were super friendly and got me checked in right away, and the dentist and hygienist did an amazing job with the cleaning, thorough, super gentle, and paid attention to every detail. Easily one of the best dental visits I've had. If you're looking for a great dentist, I can't recommend them enough!
Clear aligners are custom plastic trays made from a digital plan of your teeth. Each tray is slightly different from the last and applies gentle pressure to move your teeth a small amount. You switch to a new set of aligners every one to two weeks until your teeth reach their planned position.
Treatment time depends on how much your teeth need to move. Minor spacing or crowding can take a few months, while more complex cases often take about 12 to 18 months. Dr. Sepi Dashti will give you an estimated timeline at your consultation.
For the best results, wear your aligners 20 to 22 hours a day. Take them out only to eat, drink anything other than water, and brush and floss. Wearing them less than recommended can slow your progress.
For many cases, including crowding, gaps, and many bite issues, clear aligners can work as well as braces. Very complex tooth movements may still be better treated with braces. Dr. Sepi will tell you honestly which option fits your teeth best.
Clear aligners do not usually hurt, but you may feel pressure or mild soreness for a day or two when you start a new set. That pressure means the aligners are working. The smooth plastic is more comfortable on cheeks and lips than metal brackets and wires.
Yes. Teeth naturally try to shift back after they are moved, so you will wear a retainer after treatment to keep your new smile in place. Most people wear it every night, long term.
Some PPO plans with orthodontic benefits cover part of clear aligner treatment, usually up to a lifetime maximum. Many adult plans do not include orthodontics, so we check your benefits first. Monthly payment plans through Cherry are available, with 0% APR for qualifying applicants.