Larry J O’Neill, DMD

I felt the need to leave a separate review for Dr. O’Neill on his page in addition to Twin Aspen Dental Center. You won’t find a more calm, cool and collected dentist than Dr. O’Neill, and his staff is incredibly friendly and accommodating. If you can’t find a place for your kids, bring them. They can play on the iPads in the waiting room, and the team will likely find a way to work them in for a consult or cleaning. Worth the drive for Denver!

I have been seeing Dr. Oneill for years as my primary dentist. I was always very happy with his work. At one point I had chipped my tooth and Dr. Oneill had to go in and reconstruct it and I will say he did an amazing job and the tooth was perfect. The office has a wonderful massage chair in the waiting room and the gal who does my cleaning was always so very sweet. In the previous years Dr. Oneill had always done my fillings with an assistant but the last few times I had gone he would do only the drilling, and then leave the room for the assistant to do the actual filling and leveling out.. Only to come back and do a quick tap and check the work. The first time I had to come back so they could drill the filling down a bit more because my bite was just not 100%.. On another occasion my filling actually fell out in less than 6 months in which I called and the office and they assured me that no that is not normal. I had to go to a different dentist urgently in the mountains to have it fixed. On another separate occasion the assistant was arguing with me telling me that they needed to do 3 fillings that day when i knew that I only needed two filled in which she was very rude and condescending, only to have the dentist come in and correct her that I did only needed two done that day. She responded with an «oh.» When you pay a lot of money to have dental work done it is a really nice and reassuring to have the actual dentist to the work. I always really enjoyed the office staff, the receptionist Trish is amazing and the dentist always did exceptional work. I had to leave and find a new dentist because I felt the level of service had changed slightly when the dental assistant was doing the dental work without a dentistry license. Her attitude at times was very condescending and made me not want to come back actually. Its disheartening because the dentist can already be a ‘not so fun’ experience and it just seemed to get even more, ‘not so fun’.. after so many years I felt inclined to find a new dentist. If you are in need of major dental work I would still highly recommend Dr. Oneill.

I have been going here for several years now and LOVE IT! Courtney is my hygienist and herself along with the rest of the girls are the sweetest ladies ever! I actually look forward to going to get my teeth cleaned. As for the previous comment Dr. O’Neill has worked on several of my teeth and I have NEVER had an issue with them. One thing I have come to love about this place is they never try to pressure me into services that I don’t need. I worked at a dental office where the dentist told me I had 6 cavities, I didn’t believe her so I went to Dr. O’Neil and he told me I didn’t have a single one. So many dentists try to scam you for your money, however Twin Aspen Dental Center has never done that which is why I trust them so much and truly value their services :)
I must also note that I had to have some fillings done this past week and Dr. Brian Richter worked on my teeth for the first time. I have to say It was the most painless experience I have EVER had! I am usually so anxious about fillings but honestly I didn’t even feel the shot it was AMAZING!
Love this place and the staff, I would HIGHLY recommend these two dentists and their staff to anyone.

Avoid this dentist like a plague! I have lost two teeth that he has worked because he didn’t know what he was doing. Other dentists around town will confirm his poor skills, knowledge, and lack of capability. If you value your smile, go elsewhere.