Young woman hugging older woman with All-on-4 implants

All-on-4 Dental Implants

Missing teeth can be a source of embarrassment. Tooth loss can also have a serious impact on your bite, ability to speak, and health.

All-on-4® dental implants offer an immediate, stable foundation to support a custom denture and replace a full arch of missing teeth. 

Learn more about how All-on-4 implants at Smile Montreal in Montreal, QC, can enhance your quality of life.

Jawbone Preservation: A Unique Benefit of Dental Implants

Patients suffering from missing teeth understand the difficulties of living day-to-day with gaps in their smiles, but they may not realize how significantly lost teeth impact their overall health. The roots of a tooth do more than just hold the tooth in place: they provide important signals to the underlying tissue to keep your jawbone strong. When a tooth is lost, the lack of signals begins a slow process of bone atrophy that can lead to further tooth loss and a prematurely aging appearance.

Dental implants are the gold standard of tooth replacement because they are the only treatment that can stop jawbone atrophy. The titanium or ceramic dental implants act like prosthetic tooth roots and actually fuse with the jawbone over the course of four to six months. They supply that all-important jaw stimulation while also providing the strongest foundation for crowns, bridges, or dentures. With All-on-4 implants, our Montreal, QC, dentists can restore your smile and safeguard your oral and overall health at the same time.

All-on-4 can support a full-arch denture with just four implants. The two implants at the back of the jaw are placed at about a 45-degree angle, which allows for maximum contact with the jaw tissue. This strategic angling makes treatment possible for many patients who would not otherwise qualify for dental implants due to bone loss.

Enjoy a Brand-New Smile With All-on-4 Dental Implants

Request an Appointment in Montreal, QC, Today

The team of compassionate dental professionals at Smile Montreal understands the daily challenges patients who are missing teeth face. Our full-service dentistry practice can help restore your smile and support your oral and overall health with an All-on-4 treatment plan. You will be able to eat and speak with renewed confidence and also have a beautiful smile you can be proud to share with the world.

To learn more about All-on-4 or to book an appointment at our Montreal, QC, dental office, contact us online or call:

(514) 937-6558


Michael Dossou


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Caring and efficient in their work. They will go the extra mile to ensure your comfort during procedures. An all around great staff and I would highly recommend.

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Roberto Depani


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Exceptional patient service. Dental hygienist was thorough and explained everything in detail. Very professional. Best dental clinic I have been to.

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Have Significant Bone Loss? We Have Treatments to Improve Your Candidacy

Bone grafting material being placed into empty tooth socket

All-on-4 dental implants can often be placed in spite of bone loss, but your jaw still needs a certain degree of density to support them to avoid the risk of implant failure. If you have suffered significant jawbone atrophy after losing your teeth, you may not be an immediate candidate for traditional dental implants or All-on-4. However, our Montreal dentists offer two treatments that can get you back on track with your implant treatment plan—bone grafts and sinus lifts.

Using donor tissue, synthetic tissue, or tissue from your own body, we can replenish lost jawbone material and create a healthy and stable foundation for your dental implants. Thanks to our high-resolution imaging technology, these procedures can be performed with extreme accuracy, smaller incisions, and greater comfort, all in less time than it would take otherwise.

State-of-the-Art Technology For the All-on-4 Treatment Process

Recent advances in dental technology allow surgeons to place implants with incredible accuracy. At Smile Montreal, our doctors utilize nSequence technology to provide predictable treatment for our patients. Using an i-CAT® 3-D imaging system, your doctor can analyze the teeth, jawbone, and crucial orofacial landmarks, such as the maxillary sinuses and the mandibular nerves.

Using these images, a custom surgical guide can be fabricated. This device is placed over the bone ridge during surgery to mark the optimal locations for your new implants. Simply stated, guided surgery minimizes the margin of error in placing implants. 

i-CAT 3-D imaging system
The i-CAT® 3-D imaging system

Dental Sedation Options For Maximum Relaxation

All-on-4 implant surgery can be performed under sedation to ensure your comfort. On the day of your surgery, our dentist will numb your gums with local anesthesia but depending on your individual needs you may require additional sedation to enable you to remain calm and relaxed.

Our Montreal, QC, dental practice provides patients with conscious sedation options such as nitrous oxide and oral sedation for patients requiring mild to moderate sedation. Patients with a bit more anxiety towards a visit to the dentist can benefit from IV sedation. This allows our dentists to place your dental implants while you remain in a twilight state. This allows even the most nervous and anxious patients to receive the treatment they need to restore their smile. 

Redheaded woman smiling in dentist's chair

More 5-Star Reviews for Our Dentists "Great operation with very nice people."


Jason Karamchandani


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My in laws were visiting from California and had a dental emergency and reviewed care here. They were so impressed by Dr. Casey and Dr. Casey Sr. They insisted I should have my dental care here and I can sincerely say I’m glad I did. Great operation with very nice people.

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Liwa Zhang


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My husband and I have had several implants here. My most recent implant was pain free and there was no edema, Casey's technique was impeccable. I would highly recommend anyone with bone meal and implants to go there.

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The All-on-4 Procedure Timeline

In most cases, we can secure a lifelike temporary denture immediately after All-on-4 implants are placed. This allows for near-instant smile restoration.
In most cases, we can secure a lifelike temporary denture immediately after All-on-4 implants are placed. This allows for near-instant smile restoration.

Initial Consultation

During an initial evaluation, our doctors will carefully review your candidacy for All-on-4 treatment by discussing your concerns, goals, and medical history. Once it is determined you are a good candidate for All-on-4 implants, we will use our advanced technology to map out your treatment plan.
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Dental Implant Surgery

On the day of your procedure, we will ensure you feel relaxed and comfortable with the use of local anesthesia and sedation dentistry, if you so choose. Using the surgical guides provided by your custom-crafted treatment plan, our doctor will make small incisions in your gums in order to place your All-on-4 dental implants.

Temporary Restoration

In most cases, a temporary denture will be attached the same day as your All-on-4 surgery. This allows you to leave our Montreal, QC, dental office with a full set of new teeth.
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Healing Period

During the next four to six months, a process called osseointegration occurs in which the bone tissue in your jaw fuses with the All-on-4 dental implants. 

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Permanent Restoration

Once osseointegration is complete, our doctors will place your final prosthesis. Your permanent dentures can provide unparalleled stability compared to traditional dentures, along with all the health-restoring benefits of dental implants.

Do You Have Questions About All-on-4? We Have the Answers You Need - Request a Consultation Today

Team at Smile Montreal

The dental implant process is intricate. The All-on-4 method, with its unique approach, is no different. We place a premium on patient education, so if you have any questions at all about your dental implant options, including All-on-4, we're more than happy to answer them.

Our father-and-son dentists, Charles and Patrick Casey, stay at the forefront of their field. Dr. Charles Casey was one of the first dentists in Montreal to offer preventative dentistry, a now-standard field of care. He regularly attends seminars, conventions, and lectures to stay up-to-date with the latest developments.

Dr. Patrick Casey attended the world-renowned Las Vegas Institute for Advanced Dental Studies and is one of the few dentists in Montreal who is certified to administer sedation during procedures. He also places great emphasis on continuing education.

Our dentists are ready to share what they've learned through years of practice and education with you. Whatever your questions or concerns, we'll make sure you receive an answer that leaves you feeling empowered about the course of your care. It all begins with a consultation here in Montreal. Contact us online or call us to get started.

Insurance Coverage for Dental Implants:

If you have dental insurance, your provider will likely help cover the cost of your custom implant-supported denture. However, it's important to know that insurance almost never covers the actual dental implants.

Our Montreal practice accepts most types of dental insurance. Because we use all-digital X-rays, it's easier to reproduce scans and send them to insurance companies for quicker claim reviews. We'll be happy to do just that for you, as well as file the claim on your behalf and work with your provider to secure the most coverage possible from your plan.

What Our Patients Are Saying "An AMAZING Team in All Aspects."


Miryam Habibou


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If you hate going to the dentist, you are scared… this is the place for you! Their care and professionalism is out of this world! They made my concern theirs, they take quick actions, the appointment are not 4 months apart! The place is very clean , employees are very nice, my doctor took time to reassure me! Im giving this place 10/5

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Micheline Syvret


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Simply an AMAZING team in all aspects. Dr.Patrick Casey and his team are extremely  knowledgeable, professional, kind and great at dentistry with state of art equipment.  So happy I am in their care. Wish I found them 20 years ago.

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Dr. Charles Casey & Dr. Patrick Casey

Smile Montreal

Our team of dental professionals is focused on patient care and comfort. Our dentists use the latest techniques and innovative technologies to provide fast and efficient treatment. Dr. Patrick Casey is a member of a number of international associations, including:
  • Academy of General Dentistry
  • International Congress of Oral Implantologists
  • Academy of Laser Dentistry
  • International Academy of Orthodontics
Contact us or call (514) 937-6558 to schedule an appointment.

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"I felt more like I was talking to a friend than I was to a dentist." Nancy Lanzolla, Patient

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