Enhance Your Smile With a Cosmetic Dentist in Thornton, CO

A confident smile can boost your mood, your interactions, and your everyday experiences. At Keene Smiles, we offer custom cosmetic dentistry designed to match your goals and reflect your natural beauty. Call 720-599-4479 now to meet with a compassionate cosmetic dentist in Thornton, CO and begin your transformation.

Call 720-599-4479 For An Appointment Schedule Online

Why Choose Us

At Keene Smiles, we treat every cosmetic case with care, artistry, and precision. Our experienced team listens closely to your concerns and builds personalized treatment plans to help you reach your ideal smile. With leading-edge materials and a comfort-first approach, we make cosmetic dentistry a smooth, enjoyable experience.

Our Services

We provide a comprehensive menu of cosmetic treatments tailored to your vision. Whether you want to fix one tooth or completely refresh your look, our team will craft a plan that fits your timeline, lifestyle, and budget. Every result is designed to look natural, feel great, and last for years to come.

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

Redefine What’s Possible With Cosmetic Dentistry

Your smile is one of your most powerful features—and one of the first things people notice. At Keene Smiles, we help patients of all ages improve their confidence and appearance with custom aesthetic care. Our approach blends artistic skill with clinical excellence for results that feel uniquely you. Explore our cosmetic treatment options:
  • Teeth Whitening – Safely lift years of surface stains with powerful whitening solutions available in-office or as custom take-home kits for convenience.
  • Dental Veneers – Thin porcelain shells are bonded to the front of teeth to conceal chips, discoloration, or uneven shapes and create a flawless appearance.
  • Tooth Bonding – Composite resin is applied directly to your enamel to repair minor imperfections like small gaps, chips, or worn edges quickly and affordably.
  • Smile Makeovers – Multiple treatments are combined into one customized plan to enhance your full smile in stages or all at once, depending on your needs.
  • Gummy Smile Treatment – Reshape the gumline with gentle contouring to reveal more tooth structure and create better proportions for your smile.
  • Orthodontics – Straighten your teeth using clear aligners that fit comfortably and discreetly, offering an alternative to traditional braces.
With flexible options and a commitment to your satisfaction, cosmetic dentistry at Keene Smiles is all about you. Whether you want to glow up for a big event or simply feel better about your smile day-to-day, we’re here to help you shine. Don’t wait to love your smile. Call Keene Smiles at 720-599-4479 today to schedule a consultation with a trusted cosmetic dentist in Thornton, CO and take the first step toward a brighter, more confident you. You can also request an appointment online.

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