Trust Your Smile Care to Your Longmont Dentist

You desire your smile to be in the best shape possible, and so does your dentist in Longmont, CO. Call 720-599-4479 today to schedule an appointment at Keene Smiles and let us help you achieve fantastic oral health!

Call 720-599-4479 For An Appointment Schedule Online

Why Choose Us

In addition to offering numerous dental services, we supply the kind of extraordinary service that is getting tough to find. Our group always treats you with care and compassion. You'll likewise value our comfort-enhancing technology and sedation dentistry.

Our Services

We've got what your smile requires! In addition to cleanings and exams, you'll discover services to repair dental damage, choices to change missing teeth, cosmetic dentistry, and urgent dental care. Find the personal treatment you need with us.
Smiling male doctor in blue scrubs with Keene Dental embroidered, standing in a dental office.

Meet Dr. Gregory Keene

Your Dentist in Lafayette, CO

Dr. Gregory Keene combines a gentle approach with the latest technology to ensure that his patients receive outstanding care. He takes the time to get to know each patient and their needs, empowering them to make the right decisions about their smile care.

Read More About Dr. Keene

Protect Your Healthy & Beautiful Smile With Our Help

Your smile can be among your biggest assets. It can open the door to brand-new relationships and opportunities. That's why it's so essential to find a practice that can offer the care your smile requires to feel and look incredible. Visit your Longmont, CO dentist for:
  • General Dental Care – Cleanings and exams help keep your mouth free of cavities and gum disease. We can deal with gum illness in its early stages, to protect you from the tooth and bone loss that happen in advanced cases. We can also offer extra treatment for bad breath and dry mouth.
  • Mouthguards – We can offer personalized guards to secure your smile during sports and to stop damage brought on by teeth grinding.
  • Cosmetic Dentistry – It's easy to get a stunning smile with treatments like oral veneers, teeth whitening, and bonding. You'll discover choices for each budget plan.
  • Orthodontics – Adults and teenagers will appreciate our discreet orthodontic options to straighten crooked teeth, including clear aligners.
  • Restorative Treatments – From toothaches to broken teeth, our group can repair your oral damage.
  • Teeth Replacements – You can fill the spaces in your smile with dental implants, dental bridges, or dentures. We'll help you figure out which alternative is best for you.
  • Emergency Dental Care – You can see us ASAP in an emergency situation. We'll get you feeling much better again in no time.
There's no need to feel anxious when you come down to see us. Our group is terrific at making you feel at ease. Our oral sedation relieves your nerves if you require a little additional help to unwind. Call Keene Smiles at 720-599-4479 or request an appointment online to visit a dentist in Longmont, CO who appreciates your smile – and about you as an individual, too.

Read Why Our Patients Love Us

For decades, I had a trusted dental office with the most amazing hygienist. Well, the dentist, I trusted and the hygienist, both retired and the rest of that clinic I used to go to doesn't cut the mustard for me. Quynh smiles feels like my new dental office. although I have only gotten a...

For decades, I had a trusted dental office with the most amazing hygienist. Well, the dentist, I trusted and the hygienist, both retired and the rest of that clinic I used to go to doesn't cut the mustard for me.

Quynh smiles feels like my new dental office. although I have only gotten a crown placed and one cleaning, I can say that the work is up to par with my current needs.

The office staff is professional, kind, courteous, knowledgeable, and responsive. Dr. Keene himself has great skill and for anyone needing a crown this is your guy. ONE STOP SHOP, he has the lab right there! For those of you who don't know what this means, it means that you leave with your permanent crown instead of the usual, 2 to 4 week wait with a temporary crown which often times falls out or has complication before the permanent crown gets sent back to your dentist.

Overall highly recommend this place.


Darcy P

Dr. Keene and his team are fantastic! I always feel like they are thorough, friendly, and cutting edge. Every cleaning and treatment I have received has left me feeling better and knowing that my teeth will stay healthy for a long, long time.

Katherine H

Absolutely amazing. Dr. Keene and his whole crew have literally saved my life. I had severe dental trauma growing up and highly neglected my teeth. Dr Keene laid out my options and helped me choose what was going to best for my health and my budget. His whole staff is truly so kind and caring. I...

Absolutely amazing. Dr. Keene and his whole crew have literally saved my life. I had severe dental trauma growing up and highly neglected my teeth. Dr Keene laid out my options and helped me choose what was going to best for my health and my budget. His whole staff is truly so kind and caring. I already have and will continue to refer anyone I know to him.


Amanda N

Keene Smiles is the Best! The staff is absolutely wonderful.
Dr. Keene and his staff are so kind. Shout out to my favorite hygienist ever,Rhonda.

Denise L

My visit was scheduled to replace a crown. Although I was very nervous about the work that would be performed, the staff made me comfortable and the procedure was as pain-free as can be under the circumstances. Dr. Keene explained every step of the process. The technology he uses to make the...

My visit was scheduled to replace a crown. Although I was very nervous about the work that would be performed, the staff made me comfortable and the procedure was as pain-free as can be under the circumstances. Dr. Keene explained every step of the process. The technology he uses to make the same day crown is simply amazing. So happy I found his practice!


Sara R

My visit was a quick and thorough tooth cleaning. I hadn't been Keene Smiles for some time because of the pandemic. I'm glad I went.
p.s—Kristin, the hygienist, was great!

Richard P

My first visit was very efficient from check-in to check-out. Every step was fully explained and I was given choices on optional treatments. Dr, Keene is very friendly and the staff was kind. I recommend him highly.

Carle C

The folks at Keene Smiles are efficient and proficient. My appointment was on time and the technician made me comfortable while she took the x-rays and did the cleaning. Dr. Keene explained the condition of my teeth in a very understandable manner.

Bob B

From the time you enter the door and Emily greets you with her great smile, you'll feel at ease and welcome. The entire staff will work to make you comfortable while they beautify your smile. The level of personal care and attention to detail are unmatched. Dr Keene is a true genius in the art...

From the time you enter the door and Emily greets you with her great smile, you'll feel at ease and welcome. The entire staff will work to make you comfortable while they beautify your smile. The level of personal care and attention to detail are unmatched. Dr Keene is a true genius in the art of cosmetic dentistry!

Thank you all for your dedication!


Amy H

This office is modern, well laid out, and clean. The employees are all very friendly and helpful. Dr. Keene is friendly, knowledgeable, and great to work with. I received same day service on a crown preparation and installation with fantastic results. I've been to many different dentists over...

This office is modern, well laid out, and clean. The employees are all very friendly and helpful. Dr. Keene is friendly, knowledgeable, and great to work with. I received same day service on a crown preparation and installation with fantastic results. I've been to many different dentists over the years from around the world. This office and their Doctor and services are the best I've experienced. Highly recommended even with an hour drive one way!


Shawn E