A father-daughter business

Dr. Robert Knudson started Clearly Comfortable Smiles in 2009 in his attempt to grow his Invisalign patient base. Ever since Invisalign started in 1999 he has been passionate about the possibilities it brings to his patients using custom-made, nearly undetectable aligners. Dr. Bob has a general dentistry practice in Bellingham, Wa called Beautiful Dentistry. He’s been a dentist for over 30 years and has been actively involved in orthodontics just as long. Back in the day, he did the wires and brackets but found more excitement and joy when working with patients and Invisalign. Dr. Bob opened up his satellite offices outside of Bellingham so that he could offer Invisalign to a wider population of patients. It’s something he truly enjoys and has done over 1500 cases.

Clearly Comfortable Smiles is a father-daughter business. Dr. Bob’s oldest daughter Kelsey runs the business management while he concentrates on the dentistry part. They make a great team, always balancing each other out. They travel to each location together and do everything they can to keep their costs low so they can keep their product as inexpensive and financially attainable to their patients as possible. They know their patient’s time is valuable so they try extremely hard to be as “low maintenance” as possible. Most patients see them ever 8-12 weeks for appointments once they get started with their treatment. Kelsey and Dr. Bob love working together and you can see it throughout the day as they tease each other and make jokes. When she’s not at her engineering firm, Dr. Bob’s youngest daughter Maddi also works part time with them. A true father-daughter company! 

Invisalign for Adults & Teens

Invisalign is the most comfortable and cosmetically pleasing way to achieve your perfect smile without having to deal with uncomfortable standard braces that interfere with day-to-day life. Your treatment plan will be customized to you and will consist of removable Invisalign aligners that are updated biweekly. With each custom tailored aligner you are one step closer to your new dazzling smile! No other teeth-straightening system on the market is as effortless as the Invisalign system.

Below are a few of the many benefits to choosing Invisalign over conventional braces:

Customized Fit

We create precise aligners designed to perfectly fit your teeth and achieve your desired results.


Invisalign aligners a have smooth edges and will never irritate your teeth or gums. You’ll forget you're even wearing the aligner. Eating, drinking, brushing, or flossing are a breeze because the aligners are removable.


Invisalign is practically invisible! No one will know you are straightening your teeth unless you tell them. You can remove Invisalign for special occasions if you wish, but many people find that the aligners make their teeth look glossier and all around better and even leave their aligners in for pictures.

Clear Results

You will start to notice and enjoy the results of your changing smile within months. The length of the treatment will vary individually, but the average length of treatment is twelve months.