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Welcome to MCO Orthodontics

Dr. Mariam Haroun and Dr. Jason K. Tam are your certified Markham, Stouffville, Oshawa, Scarborough, and Downtown Toronto orthodontists. Combining specialist experience with advanced education and a personal touch, we have many of the best orthodontic treatment options available, including Invisalign® clear aligners, ceramic Radiance™ brackets, metal braces, and more. Our team has worked with thousands of Invisalign and braces patients! Ask us about the benefits of Invisalign, Invisalign for Teens, Invisalign Lite, Essix retainers, and Vivera® retainers. See how you can achieve a beautiful, straight smile with invisible braces treatment!

Our Invisalign treatments have been published in peer-reviewed orthodontic journals as well as by Invisalign. Our doctors teach other Invisalign providers how to use Invisalign and have done so internationally.


Not interested in a mouth full of metal, and ever been told “no” to Invisalign treatment in Toronto? Invisalign is a technique, rather than a product. With the experience of our doctors, most treatments can be done with Invisalign, so we welcome second opinions. Certified Invisalign dentists, Top 1% Super Elite, and Diamond Plus Provider orthodontists have come to us for their own treatment. Check out the Toronto Invisalign website to help you make the most informed decision about your treatment and get on your way to a straight smile without braces!

To start building your beautiful smile, request your consultation online today. We are your Greater Toronto Invisalign orthodontist, serving Markham, Stouffville, Unionville, Richmond Hill, Thornhill, Scarborough, Pickering, Ajax, York Region, Newmarket, Uxbridge, Port Perry, Brooklin, Whitby, Oshawa, Bowmanville, Courtice, Toronto, Greater Toronto Area, Downtown Markham, North York, and Thornhill.

The MCO Difference

Can't decide where to go for your orthodontic care? See why so many choose MCO Orthodontics because of the MCO Difference! Your entire orthodontic experience is all about you, beginning with our complimentary initial examination, with NO REFERRAL REQUIRED. We are extremely passionate about our office, and we're committed to making this a memorable experience for you!
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