Appletree Dental
Erica Derby, DDS:
Practice Profile Page


Appletree Dental
Erica Derby, DDS
Thornton, CO













A list of major dental treatments which I offer my patients:

Dental cleaning

White fillings


Inlays & onlays


Clear aligners

Porcelain veneers

Teeth whitening

Dentures & partials

Root canal treatment

Tooth extraction

TMJ treatment

Dental implants


Offers Even28 at-home™? No

Offers Even28 at-dentist™? No

Offers Invisalign®? Yes


Monday: 8:00 am to 5:00 pm

Tuesday: 8:00 am to 5:00 pm

Wednesday: 8:00 am to 5:00 pm

Thursday: 8:00 am to 5:00 pm

Friday: 7:00 am to 2:00 pm

Saturday: Closed

Sunday: Closed





Check out what some of our happy patients are saying about us:

Kimberly R. from Brighton, CO (Source: Yelp)


I am a new patient with Appletree dental.  After my first cleaning visit, it was determined that I needed a follow up appointment for some additional work.  Because my work schedule is so specific, I needed a very specific time.  Although they were completely booked, they went out of their way to accommodate me.  I know this won’t always be possible but they really did make me feel like I was a priority and did everything they could to make it work.  In addition, the office is beautiful, the staff is very friendly and the hygienist were very professional and thorough.  We had a great first experience at Appletree Dental

D and L (Source: Google)


I had a severely traumatic and excruciatingly painful experience at a dentist’s office 5 years ago which has kept me away from dentists since.  I met with at Appletree spent as much time as I needed answering questions and listening to my concerns and fears. I could tell they were genuinely interested and committed to having it be as comfortable of an experience as possible. It takes a lot for me to even enter a dentists office but I have now booked a teeth cleaning and will most likely continue to get a cavity refilled and eventually a crown redone. I recommend them!

Scott Kaltenborn (Source: Google)


I had my teeth cleaned today. They did a great job and it was quick and painless. I also asked that a tooth be rounded out to alleviate a sharp edge and some pain i was having as a result. The dentist initially wanted me to come back for another appointment but she decided she could get it done in just a few minutes so she went ahead and did it at my request. That’s what I call Top Notch service.

Tasha O. from Denver, CO (Source: Yelp)


Dr Derby is excellent! As well as all other staff of Appletree. I am always greeted with a friendly face, and get into the fmchair within a decent time. I also really appreciate the honesty and flexibility I get here. They always work with my schedule to make sure I am in and out with time to get to work still, and allow me toove around my appointments when it works out. Thank you to everyone at Appletree Dental!

Meghan VanDamme (Source: Google)


I love Appletree Dental! Everyone is so nice there and they do everything to make you feel as comfortable as possible. The office is always sparkly clean and never has a weird smell to it and the atmosphere has a calm feeling to it. I recomend anyone to come here especially if you dont like going to the dentist.

Meg B. from Thornton, CO (Source: Yelp)


I feel really lucky to have found this dental team ! Quick background, growing up, I had a dentist who practiced from his home and used a water drill (liberally) and only used topical anesthesia…if something went wrong, it was pulled. Simply put, I AM TERRIFIED of dentists. They went above and beyond to make sure I wasn’t anxious on my first appointment. Everyone from the reception staff, dental technicians, hygienists, and dentists have been VERY understanding as to my long gap of dental care. I was really pleased to work with Dr. Derby and her crew to figure out a realistic path to dental health. After a bone implant, I needed an emergency appointment and I was seen, next day (btw, it was completely fine)  fantastic. I would recommend them very highly to anyone who is reluctant to visit the dentist, they are all clearly passionate in giving the best care and experience. I honestly can’t thank them enough.

Erika Rainwater - EVE Faculty (Source: Google)


Completely terrified to go to the dentist after not going for 5 years. I heard about this practice from people at work. Everyone here was completely amazing! Front desk, tech, and dr. My anxiety quickly went away as my first appointment here began. I will be returning in the next few weeks for additional treatment. I am glad to have found my new dental office and actually go in every six months like you are supposed to!

Kenneth Grein (Source: Google)


I have been going to Appletree Dental for ten years now and I can say that I have never had a bad experience with this company. They are very thoughtful, kind, courteous and the atmosphere is very sweet. The doctors and staff are top notch and they do a wonderful job for a fair price. I would recommend them to anyone needing dental work. You will not be disappointed with this office if you choose them.

Jeremiah Ervin (Source: Google)


I have been going here for my last 8 years and have had a fabulous experience. When I got married I referred Appletree to my wife and she has had nothing but great things to say as well about her experience. The front desk staff are very courteous and the rest of the staff are very professional and good at making you feel comfortable. My son who is 2 just had his first dental exam here and really had a great overall experience.  Dr. Derby are awesome dentists! This is going to be my family’s dentist for as long as we are in the area!

B G (Source: Google)


This place is perfect. So friendly and professional. My wife recommended Appletree and now i see why. I went in for the initial cleaning and exam and was very impressed. The hygenist told me the price of a filling I needed up front. The Doctor was so professional and helpful. I have never been to a dental office that I loved but this is the one. Thank you all for everything you do for us.

Jada Shaw (Source: Google)


5 of 5 stars as this place is the best. Always clean and caring professional service. Hannah is my hygienist and Dr Derby is a wonderful Dentist. I’ve never been a fan of the Dentist however Dr Derby and her staff go out of the way to ensure every visit is a good experience. Thank you for taking care of me and my family for several years now.

R. T. Esenberg (Source: Google)


The entire experience was exceptional. I checked in and waited in my car until my hygienist was ready. She clearly explained everything from start to finish during the procedure and made sure I was comfortable and felt no pain. Checking out was quick and professionally done as well. I am actually looking forward to my next appointment!

Cathe Rynne (Source: Google)


 I have ever had! She has a great personality and her demeanor is very caring and professional. I’ve had many dental issues all my life and she makes me feel very comfortable, not awkward, or rushed about it. One step at a time approach, which keeps me coming back. Dr.Derby is great in the same way!

Ashley Rawlings (Source: Google)


 My dental hygienist was extremely gentle and considerate. She listened to my concerns, and she and Dr. Derby spent a good amount of time with me. I appreciated being treated with respect and listened to. I highly recommend Nicole if you’re sensitive and/or fearful of the dentist, because she takes time to make sure you’re comfortable. My husband said America (hygienist) is also extremely gentle as well. This is the only office we will ever go to again for dental work.

Ashley R. from Northglenn, CO (Source: Yelp)


My dental hygienist was extremely gentle and considerate. She listened to my concerns, and she and Dr. Derby spent a good amount of time with me. I appreciated being treated with respect and listened to. I highly recommend Nicole if you’re sensitive and/or fearful of the dentist, because she takes time to make sure you’re comfortable. My husband said America (hygienist) is also extremely gentle as well. This is the only office we will ever go to again for dental work.

Felicia C. from Northglenn, CO (Source: Yelp)


I started coming to Appletree due to some poor experiences with other dentists in Thornton. Since switching to them, I’ve had nothing but positive outcomes. Everyone there, that I’ve worked with, have treated me with kindness and respect. I never feel pressured to have any procedures done that I didn’t already know I needed. I also greatly appreciate the Hygienist I’ve had because she is naturally gentle and respectful to my mouth without me needing to tell her my teeth are sensitive. It’s a nice change from the butchers I’ve previously gone to.

Adriana Arriaga (Source: Google)


I am from out of town and had a dental emergency…the front desk went out of their way to accommodate my needs and got me in asap! Staff was caring, respectful, and non-judgemental towards my needs. The dentist was thorough and informative. All my needs were timely met. I wish this office was near my home in California…I would definitely select this office for all my dental needs!

Ashley Cialone (Source: Google)


I just started coming to Appletree Dental about 6 months ago, and I love it! They are very thorough and informative during an examination or cleaning. I love how genuine and kind each of the employees and dentists are, and the location is very convenient. I would highly recommend this dentist; the rest of my siblings switched over to Appletree recently, as well.

Joyce Marquez (Source: Google)


Absolutely loved this place. I have always had bad experience with dentist and dental offices (Hilltop and My Dentist). All staff here is so professional, knowledgeable, and personable. I was treated like they had known me for a long time and it was my 1st visit. They did not make me feel bad about myself for not being seen by a dentist for over 2 years which was my fear. I highly recommend this place.

Owen N. from Englewood, CO (Source: Yelp)


Love, Love, Love Appletree Dental.  What a great practice!  Everyone is so friendly and helpful. Always greeted with smiles every time we come in.  The dental care is fantastic! I know lots of folks that go here and everyone I know is super happy with their experience (makes me wonder if the few negative reviews are plants from a competitor– especially as they have so many positive google reviews as well).  Would definitely recommend this practice to anyone!

Tia Toennis (Source: Google)


I love this dental office! Having 4 children we have had interactions with all of the dentists, numerous dental assistants and of course billing and scheduling. Customer service has always been top notch they have always been thoughtful when it comes to scheduling, we have never experienced billing issues (even with coordination of benefits) and they have always been very helpful when I have had questions. The work that they have done has never been below standard they have always made my children feel comfortable throughout any procedure or cleaning they have had to perform. I am very thankful for all that they have done for my family.

Cynette Lovato (Source: Google)


Found this gem of an office after leaving another awful dentist office nearby. My entire family of five goes here and we absolutely love it. Beautiful, comfortable interior space and up-to-date technology. All staff has been incredibly nice and knowledgeable and they are so awesome with my kids. Very accommodating for appointments and several last minute changes I have had to make. Would absolutely recommend this dentist office to anyone looking for a refreshing change to the typical blah dental experience, or if you are unhappy with your current dental office.

Chris Brubaker (Source: Google)


I’ve been going to Appletree for over 4 years now and I love it. I even had to change dentists for a year because of insurance reasons and I went to one of those big chain dentists and was highly dissatisfied. All the big chains care about are up sells and making more money. So the second I got new insurance I made sure to return to Appletree. Their new location is amazing, if you haven’t been in there yet definition check it out. I think the staff there is great, although I would like a bit more information about what’s going on during any of my visits and why they came up with their diagnosis, but besides that the care has always been great and the quality of work seems A-OK with me. I would definitely recommend Appletree as a fantastic local dentist.

Marty Owens (Source: Google)


First visit to Appletree Dental, and I couldn’t be happier. Moved to Thornton from Portland, and my wife picked the right dentist for us. The Hygienist was excellent. She was thorough yet gentle, and did a great cleaning (after 7 months, boy did I need that). Did all the X-rays and gums check, and all went well. A nice consult from the dentist, and I’m good to go till next time. Most excellent!

Wellyssa SpellSong (Source: Google)


Parking lot waiting room, with easy to call text number. When I was let in for my appointment social distancing was being observed in the inside waiting area, and then I was led back to my appointment. ALL the staff were appropriately protected, and I felt comfortable, safe and respected. The teeth cleaning went well as always!

Janna Railsback (Source: Google)


I have been a long time patient here but the last crown I got the whole experience was bad a year later the crown fell off and I did not want to return there even though I only had the one bad experience out of several visits but they made it right and fixed it and this time it was a pleasant experience. Will continue to be a customer here.