Keen Family Dentistry
C. Mark Keen & Bryce M. Keen DDS
General and Cosmetic Dentistry
Call: (909) 989-6661

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Read what other patients have said about us:

Alice Toombs , Fontana

Always a pleasure from front office to hygienist to dentist - Love Keen Family Dentistry!!

LJ, Upland

Everyone in the office was very friendly and helpful. Lots of smiles.

Jose Martinez , Fontana

Great customer service..dedícated staff...excellent work

Larry A, Ontario

Jazzmin is the best friendly and accommodating

Bob M, Alta Loma

Great experience over the past 15 years.

James , Rancho Cucamonga

First time here.Awesome experience. Light at he touch and very friendly. Didn’t feel like I’m getting my teeth drilled out just for a simple cleaning. I definitely won’t wait 4 years to be seen again.

Michael, S.

I missed my original appointment even after all the notices. Im giving Keen Dentistry a 5 star because they worked with me to give me an open slot in the afternoon. My Keen Dentists are always willing to work with the client for the best outcome. Also I had a new hygienist and she is just as terrific as the previous. I think my dentist is very “Keen”. “Love Em”!

Joe G, Fontana

I had a great experience with this office on my first visit!

Norma, Glendora

Dr. Bryce Keen has a natural gift with dentistry. Always very gentle and puts one at ease right away. I appreciate his thoroughness and the fact that my visits have always been pain free!

Luis Jr. Medina, Rancho Cucamonga

The fact that it’s a small private family owned dentistry is what I love about it. They truly care for your teeth and do a great job of filling you in before your appointment if something opens up. I actually enjoy going to the dentist

Elena B. , Upland

As usual my experience was great. I was only there for a cleaning (this time) but my hygienist was friendly, professional and made me feel completely at ease. The front staff is great and attentive and course Dr. Keen is the best. I didn’t get to see Luis on this visit but he’s super too. Thanks to all !!!

Michael F, Beaumont

Stephanie did a great job…… very comfortable & pleasant

Aurora S., Rancho Cucamonga

Keen Family Dentistry has always been professional and explain things in a way that the kids understand so they can take ownership for their health! Staff is friendly and helpful!

Daryl M., Rancho Cucamonga

Been going to Keen for 20 plus years. Great place full of caring people.

Judy C., Claremont

Thank you for you professional and caring service!

Paul & Lucy V, Alta Loma

We have been going to Dr. Keen’s for dental exams and dental work since the 90’s, Dr. Keen and his staff have always been very patient friendly and thoughtful. Prior to dental treatments Dr. Keen is thoughtful and provides a clear understanding of any dental work that is needed. Keen family dentistry is the best

Vinny M, Upland

Dr. Keen and his staff are great! I always feel welcomed and taken great care of.

Terry T, Upland

Provides excellent care and thank you for being patience and taking good care of all the patient.All the staff here are friendly and helpful.Both Dr. Keen and Dr. Bryce prefer to save teeth and they have the best interest of the patient. I am lucky to find this office and happy with their care.

Sheri Dill, Alta Loma

Love the entire office!

Susan G., Upland

As a customer first, treated very well with kindness, respect and incredibly helpful navigating through dental plans. As a patient, the highest regard in care for dental health. A very thorough, educated, friendly and kind staff. For over 20 years, I have received same great customer care and service. All my customers, family and friends I recommend, have said the same and love this family practice.

Candie M, Upland

The dental hygienic is great! She does a very thorough job. My gums are never left sore or bleeding yet, my teeth are sparkling clean.

Rebekah Leon, Upland

Very nice low stress office! The best case senario for me.

Tyler P., Alta Loma

I have been to many different dental offices and I have to say this is by far my favorite. Both Dr. Mark Keen and Dr. Bryce Keen have a level of professionalism that is second to none. You can tell they truly care about their patients and that is hard to find these days. When I’m there I feel like family. If you are searching for a new dentist I guarantee your search will stop here! 10 out of 10 service!

Liz D , Glendora

Love this office. The best staff! Both Dr Keen’s are awesome. Once you go you’ll never change dentists again.

Lisa M. , Rancho Cucamonga

Great dentists and office staff!

Pat M., Upland

I always have a positive experience at Keen Family Dentistry! I appreciate the detailed explanations and the professionalism. There are no surprises as far as the plan for services or fees. I highly recommend if you are looking for experienced and honest dental services in a very relaxed environment. All of the staff is always very helpful too!

Bob H, Alta Loma

Loved the chair side manor of Dr Keen. Everything was explained well and they were fast.

Mike, Wilson

Always a quick and easy visit.

Richard L., R.C.

Wow,Bryce and the dental assistant rocked.! Very professional and personal.

Julie, Fontana

I loved this dentist.. Family oriented making their customers comfortable and accommodating!

Jon H, Rancho Cucamonga

Had great experience, no wait time. Staff was fun and engaging. Dr Keen(son) was caring/gentle .

Kim Holman, Rancho Cucamonga

I love your office. It is so friendly and patients are treated like family. Dr. Keen makes you feel at ease with his calm and friendly demeanor. Luis is amazing too. Everything is explained and questions are answered. I was not looking forward to my crown replacement but it was a relatively quick procedure and I was pain free. Thank you for taking such great care of your patients!

Shelby, Rancho Cucamonga

Always a pleasure to visit Dr. Keen’s office. They are all so nice and professional.

Tracey B, Highland

I love the staff at Keen Family Dentistry! Always pleasant and guaranteed smiles. The Hygienist was amazing and has a wonderful personality. I have recommended family and friends and they love it as well. Cheers to you all!

Kristina , Rancho Cucamonga

Most pleasant dental experience I have had! Jazzmin was so great with my cleaning and was so friendly, so was the rest of the staff. They got me in right away and were more than accommodating. After too long of a hiatus from the dentist, I am so glad I found them and won't hesitate to go back!

Kathy Nichols, Covina

Timely, polite courteous staff

Philip L, Alta Loma

Dr keen did a great job of examining my tooth. So glad didn’t need any work.

Stacy M., Upland

Super friendly and accommodating.

Luis Outumuro, Rancho Cucamonga

The best! Great service, explains things in detail and friendly staff!

Crystal , Winchester

Great practice

Stephanie HOff, upland

Thank you to Dr. Keen and Luis and all staff members. I had a very difficult case with my lovely mouth and Dr. Keen, Luis and the staff as usual , made this entire experience very pleasant. He is so very gentle and thorough and a perfectionist. He made my teeth and crowns look absolutely beautiful. I am so blessed to have found this wonderful family dental practice. Just wanted to say I am greatful and thank you all for making my life easier with my dental problems. I love you guys!!!!! Thank you with all of my heart!!!! Our whole family are patients of this dental practice and we are all pleased as punch and greatful for your services. SH

JudyB, Alta Loma

The Doctors Keen (great education/training at USC) and staff are very caring. They put their patients first in the order of their daily priority. Last Thursday, I called the office about 1 pm because I had broken a good-sized chip off my molar. The response was almost immediate, "Could I come in that afternoon at 4 pm and Dr. Mark Keen would look at it." Wow. Okay, yes. Not only did he look at it, he proceeded to prep the molar for a temporary crown. He spent considerable time dealing with my problem. His staff had to stay and work for more than an hour after normal closing time to finish the work. They were very cheerful and no one ever gave me a sense that I was trouble or imposing on their schedule. It was deeply appreciated by me, and I was so impressed. Patient Care is not just lip-service at Keen Family Dentistry. They really mean it.

Denise J, Alta Loma

Dr. Keen, as well as his entire staff have been quite amazing. Going to the dentist may give some uneasiness for sure, however, going here will eliminate any fear you may have. Dr. Keen is extremely kind, gentle, knowledgeable, and he always helps you to understand any procedure. I've been going to Dr. Keen for too many years to count, so I can tell you, I won't go anywhere else as long as Dr. Keen is in practice. Also a huge thank you to Yolanda, the hygienist who cleans your teeth like no other. She is gentle, kind, and thorough.

Kassandra A., Rancho Cucamonga

Love this office! Dr. Keen is great and careful. His team are all wonderful. Love them all!