Photo of Dr. Mark Lansdell
26 years experience


Gordon Street Dental Office
848 Gordon Street
Guelph, Ontario
Mon 8:00 am - 6:00 pm  
Tue 8:00 am - 6:00 pm  
Wed 8:00 am - 6:00 pm  
Thu 8:00 am - 7:00 pm  
Fri 8:00 am - 2:00 pm  
Sat 8:00 am - 2:00 pm  


During my time practicing in Guelph, I've overseen more than 70,000 smiling faces at great Recare visits. My goal has always been to provide the best possible experience for my Patients. Your needs, your concerns and your goals are always front and center. I have many techniques at my disposal, and promise you kindness and care all the way. From day one my mission has been to deliver the highest standards of Dental Treatment, while ensuring comfort and confidence. I strive to always keep you informed, to explain things clearly at every stage and to help you achieve and maintain your best oral health and a beautiful, winning smile. Whether you're new to Guelph, in emergent need, or looking for a change in your Dentist, I look forward to getting to know you and your Family!

Why should patients choose you as their provider instead of others in the area?

We utilize the latest advancements in technology to provide you with the best results available. We educate and inform every step of the way in our treatments and alleviate your anxiety and nervousness. Our team is friendly, outgoing, caring and we cater to the needs of our patients Our longstanding experience delivering quality care to this community is unparalleled. We get results!

What are the top 3 treatments that you focus on?

Cosmetic treatments like Laser Whitening, Invisalign, Veneers Restorative treatments like Crowns, Bridges and Implant Crowns Surgical and alternative to surgical Gum Therapies to help keep your teeth a lifetime

What are you proud of in your practice?

I'm most proud of the longstanding relationships built over the last 25 years here in Guelph. It's been amazing to watch these kids grow up. I'm proud of our staff, as I know there isn't a Dentist out there who is as fortunate as I am to have this great group of people work alongside me. I'm proud of the quality of care we've been able to deliver consistently to our patients over the years. I'm very proud of the results we've consistently achieved. I'm very proud of our attitude and approach in providing excellence in care consistently!

Which cases do you enjoy treating? Why?

Smile Makeovers, because it is most rewarding to see a smile born out of pride and satisfaction. Complete, and Partial Mouth rehabilitation work, because everyone should always be able to fully enjoy their meals! TMJ Dysfunction therapies, because it feels satisfying to guide people away from long term and debilitating pain.

Most Helpful Reviews

  • Reviewed on July 6th, 2021  •  Verified patient
    Really nice, no shaming if it's been a while since you've been to the dentist. Overall great experience!
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  • Reviewed on June 19th, 2021  •  Verified patient
    Hygienist did a great job for the cleaning, essentially pain free. Dr. Landsdell and his technician were very thorough and friendly. Pretty much all you'd ask for from a first time appointment at a new clinic.
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  • Reviewed on June 4th, 2021  •  Verified patient
    Really friendly and happy to explain in detail. Staff are lovely as well. Some cool high tech equipment my previous dentist didn't have (3D scanning on teeth, etc.). Office is nice and new. Some of it still being set up, but you can tell it'll be really nice when finished and the current rooms are nice.
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