Trusted Family Dentistry in Guelph
We've Been South Guelph's Reason To Smile For More Than 25 Years
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Why Chose Us For All Your Family Dentistry Needs?

Family Dentistry
Family members can maintain their confidence, and a healthy smile for years to come with our guidance and care.

Cosmetic Dentistry
Ready for your close-up? See what's new and exciting in 2024 in the field of Smile Transformations.

Restorative Dentistry
Missing, decayed or fractured teeth? Try Innovative repairs for structurally damaged teeth, and restore your smile.


Invisalign
State-of-the-art solutions to predictably, and comfortably straighten your teeth and get back to the smile you were meant to have.

Sedation Dentistry
For patients who feel uneasy about dental procedures, we have a variety of sedation techniques at our disposal.

Laser Dentistry
Diode Laser Treatment offering Whitening, Brightening, Disinfecting and Sculpting all without Anesthesia.

Convenient Payment Options
We offer 5 Convenient Payment Options in addition to Directly Billing your Insurance Company.
Dr. Mark
Dr. Mark Lansdell has been consistently providing quality Dental Care to South Guelph for over 25 years. His gentle approach combined with his meticulous attention to detail ensures the positive outcomes that his Patients have come to expect.
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What Our Patients Have to Say
Excellent! Staff are professional, friendly and make you feel comfortable. Dr. Lansdell is very knowledgeable and takes time to explain everything. Office is very clean and I appreciate the appointment reminders. I am new to Guelph and will be moving to this dentist. Highly recommended!
Melissa M.
My family and I have been coming to Dr. Lansdell for many years. He does a great job, always taking time to answer questions and explain things to me. Cathy and the rest of the staff are always friendly and kind. I would highly recommend this dental office.
Janice C.
Dr. Lansdell and his staff are attentive, knowledgeable, helpful and pleasant. I always leave the office confident that I received excellent dental care and advice, that they are accessible and accommodating in case of emergency.
Dorothy G.
A wonderful dentist! Staff are kind & knowledgeable, always answering all my questions & make booking/insurance easy. Office is clean with great screens to view photos & x-rays. Dr. Lansdell makes a trip to the dentist much more relaxing.
Alexandra Tarrant
I can't say enough good things about this practice. Dr Lansdell and his staff are all extremely knowledgeable, friendly and welcoming. They eagerly answer any questions and make sure that you fully understand, but they also have a personal touch and I had some great conversations, sometimes it feels like I'm just visiting friends. During procedures, Dr Lansdell will make sure that you have absolutely no pain and will continually check to make sure you are ok. I feel he genuinely cares for the comfort of his patients.
Stacey M
I recently had a root canal done by Dr Lansdell. I had a great experience and he made sure the entire process was pain free. It really felt like nothing more than a filling. I appreciate the time taken to make sure everything was done perfectly, and to be asked of my comfort level throughout the procedure. He really takes the fear out of going to the dentist. Thank you Dr Lansdell and Natalia.
Jennifer Snyder
Our family of four has been under Dr. Lansdell's care since moving to Guelph more than a decade ago. Not only do we receive excellent, expert dental care from Dr. Lansdell and his wonderful staff, but we are made to comfortable and at home during our visits. Our appointments are never rushed, there is always time for questions, and they are meticulous about following up to see how we're doing. Their overall positive and caring approach means that my two daughters have never been afraid to visit the dentist. We are grateful to everyone at Gordon Street Dental for taking such good care of us!
Christie Zimmer
I came from England and already was at a disadvantage! Even more so, I arrived via the Caribbean whereupon the rum and the British dentistry wrought havoc on my teeth. Dr Mark and his wonderful team performed miracles after diligently working on me! Trina, with her tough love approach as she cleans, Cassie, her compassionate nature, puts me at ease, Cathy with more precision than a Swiss time piece booking me in and of course Dr Lansdel with impeccable knowledge, sharp wit and slight of hand! Together they’re just awesome! Thanks Guys.
Robert Wykes
Dr. Lansdell and his team are always able to strike a balance between professionalism and friendliness. They are able to make the dental experience as comfortable as possible, and address issues in a timely manner. I highly recommend Gordon Street Dental Office.
Mark Cachia
I love Gordon Street Dental! They have built a caring, attentive environment and treat their patients with patience 😁 and kindness. Always ready to help and support each persons’ quest for healthy, happy smiles! Dr Lansdell is excellent at what he does and always invites you to the process, to ensure you understand what’s happening.....and he makes me laugh!😃 I will continue to always promote and recommend Gordon Street Dental😀
Margory Currie
Dr. Lansdell’s is very thoughtful and thorough. In my first appointment he took the time to walk me through photos of my teeth and explained everything, and allowed me to ask any questions I had. I felt included in the process and did not feel like just a number (or set of teeth). I was impressed and I felt cared for and welcome. Every member of his team was very friendly and knowledgeable and made me feel the same. This was consistent in all my subsequent appointments. I highly recommend Dr. Lansdell and his team to anyone looking for a dentist.
Maria Orlando
Consistently thorough, thoughtful, and professional service with a dash of humour to keep things fun. Cleanings are top notch and every time I go there seems to be a new tip that inspires. Dr Lansdell always gives lots of info when there’s an issue and the work is solid. Great team across the board. Maybe worth noting I have been with Gordon St Dental for well over two decades and am an actual patient 😉 happy to recommend.
wjwhitehead
I recently had a root canal performed and it could not have been a better experience. Dr. Lansdell was thorough in his explanation of the work to be done and I had absolute confidence going in that after the procedure I would be pain free. Overall it was a great experience and I can’t recommend Dr. Lansdell and Gordon street dental enough, I’m very happy I made the switch over to Gordon street dental and will be recommending my friends and family as well.
Justin Langille
I do not have enough good things to say about Gordon Street dental! I would highly recommend to anyone looking for a new dentist or are not happy with their current dentist. They go above and beyond. All the staff are extremely friendly and willing to help with any concerns. You can easily tell that they have a high priority for patient care. They have the option getting patient reminders via text message and will message you if an earlier appointment comes up in their schedule. Dr.Lansdell is also incredible, very patient and takes the time to make sure you have the most comfortable dental experience. He is also good at explaining what he is doing and what to expect, which is comforting to anyone with apprehension about dental work (like myself). Clean and cozy office as well. I will be a long-term patient!
Katie Frankiewicz
Great experience! Very knowledgeable and helped explain many things that I didn't know before. Very clean facility, kind staff. Next gen technology that helped 3D map my teeth which was pretty cool.
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Dr Lansdell’s office called me immediately after I requested an initial consult and cleaning via Opencare. They fit me in the same day. The entire staff at Dr Lansdell’s office were genuinely caring and easy to talk to. Dr Lansdell, himself, took his time with my consult, is a wealth of knowledge and answered all my questions patiently and informatively. I was exceptionally impressed with the entire experience
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Dr Lansdell was by far the best dental experience I have ever had. He was thorough and caring. He explained everything well and made sure to check with me both to make sure that I was comfortable and answer any questions that popped up.
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I recently visited Dr.Lansdell because my permanent retainer placed by an orthodontist had come unglued from my teeth and had left a sharp spot in my mouth. His team was able to give me an appointment ASAP given the urgent nature, squeezing me in before their holiday break. He explained his plan to re-attach the retainer and walked me through the procedure. His team was very professional and prepped me for the procedure so that it was all done perfectly and very fast. Best of all I left no longer in pain.
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Dr. Mark was kind and helped put me at ease right away. His staff was attentive and made sure I was comfortable. My broken tooth looks amazing...I'm so glad I reached out to them.
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Best dentist experience I have ever had, I left learning more about my mouth and teeth than any previous appointment in my life. Would highly recommend.
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Really nice, no shaming if it's been a while since you've been to the dentist. Overall great experience!
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This dentist is great! I have been to 3 different dentists in Guelph and this dentist did by far the best freezing job, I felt absolutely nothing when they were freezing. The staff is very friendly. Highly recommend this dentist. Like
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Dr. Lansdell always goes the extra mile. His care, knowledge, honesty and professionalism are qualities you don’t find easily these days. He is down to earth and won’t sell you on work you don’t need. The staff are superb and he has taken all measures to create a safe environment for patients and staff. Thank you for the great patient care Dr. Mark!
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Dr. Lansdell always goes the extra mile. His care, knowledge, honesty and professionalism are qualities you don’t find easily these days. He is down to earth and won’t sell you on work you don’t need. The staff are superb and he has taken all measures to create a safe environment for patients and staff. Thank you for the great patient care Dr. Mark!
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Best dentist in the city. Dr. Lansdell and staff are friendly, thorough, knowledgeable, and provide excellent care. Recommend highly.
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We all dread going to the dentist but the team at Gordon street dental made me feel very comfortable about my visit procedures that need to be done And the cleaning was probably the best I ever had highly recommend Gordon street dental very professional very friendly and make you feel very comfortable about going back to the dentist.
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I love Gordon Street Dental! They have built a caring, attentive environment and treat their patients with patience 😁 and kindness. Always ready to help and support each persons’ quest for healthy, happy smiles! Dr Lansdell is excellent at what he does and always invites you to the process, to ensure you understand what’s happening.....and he makes me laugh!😃 I will continue to always promote and recommend Gordon Street Dental😀
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Come in Before February 20th
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*Not Available To OpenCare Patients*
Years In Guelph
28
Successful Recare Visits
77,362
Emergencies Averted
7,162
Smiling Faces
84,524