Our patients love us! Check out what they have to say about their 5-star experience with our amazing team. We can’t wait to provide you and your family with the same quality of care!

fernando M.
01:50 02 Dec 22
The staff is very friendly and knowledgeable. They welcome you with a smile (pun intended) every time you visit.
Gina G.
17:39 01 Dec 22
Excellent group of professionals. I would highly recommend OASECT for any and all orthodontic services. They are attentive, thorough, knowledgeable, and always helpful to meet all the criteria required to get the results you want to achieve. We are very pleased with their work and their services offered.
Karin D.
17:35 01 Dec 22
My daughter, third one to go through OASECT, just finished 11 months of invisalign. Everything is perfect. I very highly recommend this practice. With three kids totaling about 9 years (two kids each had two phases of braces) we NEVER encountered anything other than the utmost professional, friendly, helpful and caring staff.
Amber R.
17:24 01 Dec 22
Everyone was very nice and welcoming. They were very informative and helpful. Would highly recommend.
Daphne S.
17:22 01 Dec 22
The office and staff has a welcoming spirit. The appearance of the office is clean and modern.
D-Force O.
17:21 01 Dec 22
My son loves the experience, the staff is so nice and helpful, it’s a great experience, thanks a lot !!
M C.
18:39 22 Nov 22
The entire staff at OASECT are so friendly and helpful! Highly recommend to anyone looking for orthodontic treatment!
LaShawn K.
01:16 02 Nov 22
Always a great experience!
Catherine C.
17:33 01 Nov 22
Always professional, friendly and accommodating!
owen O.
17:17 01 Nov 22
Best decision ever! My dentist office recommended OASECT. They greeted me with open arms, staff friendly and helpful. Office atmosphere is warm and inviting. The payment plans and billing are tailored made for you and your budget.
Russell H.
16:31 01 Nov 22
Professional, courteous, always friendly
13:27 04 Oct 22
Dr.Hack and all of the dental hygienists were extremely friendly and professional! amazing experience
Joy V.
13:19 04 Oct 22
No friendlier front office than the ladies at OASECT!
Robbie S.
12:39 04 Oct 22
Excellent doctors, super friendly staff !!!!TEETH LOOK GREAT!!
Leena M.
12:25 04 Oct 22
My daughter always has a wonderful experience at her Orthodontist’s office. Dr. O’Leary & Dr. Hack along with their wonderful staff make it a very comfortable environment for children. Thank you O.A.S.E.C.T for all that you do to make having braces fun.
Sarah C.
23:30 03 Oct 22
Pleased with this group! When we’ve had a wire break or an emergency they’ve always gotten us in to be seen. All the staff have been very kind and patient.
Margaret C.
16:11 03 Oct 22
Good experience. My child was handled with care and his teeth look great.
Al G.
15:46 03 Oct 22
very vice staff!!! super friendly!!
Avery W.
15:38 03 Oct 22
Very professional and pay lots of attention to you’re needs and concerns.
Jordan C.
15:32 03 Oct 22
I love the Norwich office! The staff is so friendly, and they are amazing at what they do! Couldn’t be happier. 10/10 recommend
Jack B.
19:25 19 Sep 22
Very friendly and do an awesome job! Professional and pleasant to work with!
19:19 01 Sep 22
I am always happy to go OASECT. They are so friendly and professional.
Vanessa V.
16:33 01 Sep 22
I truly appreciate all that was done to help me with Braces for my son! Between the payment plan and the scheduling options I couldn’t ask for better service! We are 100% satisfied with his teeth and I truly would like to Thank your staff AGAIN for all the help!
15:42 01 Sep 22
Dr.O’Leary and his staff are absolutely fantastic to work with. Everyone in the office is professional, friendly and goes above and beyond to make each experience with them satisfactory.
Michele S.
15:20 01 Sep 22
My son has had braces on now for almost 6 yrs & r coming off tomorrow!!! They have always been so wonderful(and we’ve been there quite a few times might I add). Always friendly, professional & never a wait time to get taken in. If he lost a brace or broken wire they always took him right in for fix. Great experience overall!!
Donna C.
14:57 01 Sep 22
OASECT is the best! They are very patient and kind. Helpful and thorough. My daughter is a special needs patient and has no problem going to them. Thank you for your hospitality.
Rebecca I
14:53 01 Sep 22
OASECT has been wonderful in treating our daughter for her braces journey. If we had an issue with pain or loose wires, they got her in right away to ease her pain. They are always on time and super friendly! The ice cream treats and giveaways are a nice touch! We would definitely recommend them to anyone in need of an orthodontist!
Sarah H.
14:17 01 Aug 22
My daughters teeth look PHENOMENAL! My mom showed a pic to my brother’s ortho in Maryland and he said OASECT did a beautiful job. My daughter liked all the staff, and absolutely LOVES her new smile. Thanks, OASECT!!!
Laura T.
13:41 01 Aug 22
We love Dr. Hack and the staff at OASECT! Great results.
Candice H.
13:36 01 Aug 22
Top Notch!
Amy Beth L.
01:37 08 Jul 22
Wonderful staff with friendly but professional environment. They explain everything in detail and are open and respectful to your needs and give honest patient treatment plans.
Nancy A.
21:39 07 Jul 22
Awesome group! Everyone is friendly and professional.
Chris & Patty M.
21:11 07 Jul 22
No problems. Very efficient and friendly.
Nikki G.
15:40 07 Jul 22
Another great visit. Concerns and my “I wonders” are always heard and discussed. I never feel rushed or dismissed.
Joshua W.
15:06 07 Jul 22
OASECT is fantastic. I am currently in the middle of treatment with invisalign and it is going great. I had my wedding a few weeks ago and they were very accommodating with removing my attachments as to not ruin any photos, and then getting them put right back on a week later. Highly recommend going to OASECT vs anyone else. They know what they are doing and are very friendly. Thank you to everyone at OASECT for what you do.
Dawn C.
15:00 07 Jul 22
Staff are very friendly and professional. I'm thrilled the office is back to pre-Covid-19 arrangements with furnishings and no masks!
Margaret C.
14:55 07 Jul 22
Nice facilities, great people.
Melissa S.
22:19 09 Jun 22
Excellent care, staff is very professional and friendly. I have recommended this office many times over the years!!
Jeanne G.
13:33 08 Jun 22
My smile has been restored to beautiful thanks to Dr. O’Leary and his team at OASECT!
Alysa S.
20:54 19 May 22
Started orthodontic treatment for my daughter here almost a year ago. No complaints. She loves the complimentary ice cream sandwich at the end of each appointment.
Janelly T.
13:49 17 May 22
I am giving it 5 stars because that is exactly what they deserve. I have had both of my kids get braces here. However, what made me do this review was what they did for me. I needed braces, but refused to get them, and instead opted for Invisalign. Then Covid happened in between and I got side tracked by some personal struggles and did not continue using it. They were patient enough to start me back on a new set. I had more issues with it; and when I went to them, ready to give up; they surprised me by saying they were not ready to give up on me. They allowed me to get braces after all that waste of time on them. I was not expecting this. I have to say I am thankful for their dedication, patience and understanding. I am so happy I chose them and for my results.
Britt M
16:13 11 May 22
This is hands down the best medical practice I have ever been too. Every single staff member is friendly and accommodating. The process of my sons braces from start to finish was an enjoyable experience. The office is inviting and they always have a little perk waiting for you. I will highly recommended this office to anyone. (Other practices take note.. their doin right somethin here 🙂
Marissa D.
19:38 03 May 22
Got my first orthodontic treatment about a decade ago. Went back for some fine tuning and the staff was just as I had remembered: very welcoming, friendly and personalized service.
Monique H.
18:28 02 May 22
A few years ago my son needed braces and a family member suggested OASECT. I called they got me right in. They sat down and explained everything with me and my son on what was going to happen on the day he got his braces. Staff is excellent!!!! Great customer service anytime I had a question I called and they would get right back to me.Excellent place
Demetria D.
19:24 26 Apr 22
All three of my kids have gotten braces here, they do a wonderful job! Highly recommend!!
justin H.
19:57 25 Apr 22
Tremendous place with awesome people. Highly recommend to anyone, any age! Also, free ice cream!
brittany L.
17:40 21 Apr 22
I previously had braces as a child and like many people stopped wearing my retainer. I came to OASECT for Invisalign to fix the shift and they did an amazing job and got my smile back to perfection! I’m so happy I decided to go with OASECT the whole team there (especially Sandy) is so friendly and professional and always made me feel comfortable and happy to be there.
MaryKate M.
23:17 19 Apr 22
My two sons received care from both Dr. Hack and Dr. O’Leary. Graham’s experience with the Invisiline was successful. Rowan had a different experience, he had more complications and his braces were on longer than expected. He still needs a follow up to get a new retainer. All in all, the staff was always professional, kind and respectful. And we love Angie! We would recommend OASECT to our friends and family
Lori V.
19:47 19 Apr 22
Such talented, friendly, and kind staff! It was always a pleasure going to the office!
Kelly R.
18:51 12 Apr 22
Highly recommend! Very professional and friendly staff.
Scott K.
22:50 15 Dec 21
Our family has had two kids go through orthodontic treatment at OASECT. Both cases came out great, with a beautiful aesthetic and functional result. The doctors use the latest techniques and materials to achieve these results. Often in very difficult situations. The staff is courteous, helpful and upbeat! It’s a great team!
Manjola C.
16:06 03 Nov 21
Amazing in everything aspect! Our beautiful daughter is more confident than ever! Thank you!!
Jennifer L.
13:59 03 Nov 21
OASECT is the best! Everyone is always happy and friendly and super attentive.
Shonaugh B.
18:33 13 Oct 21
I absolutely LOVE my smile!! Before I got braces I would cover my smile, and now I can’t stop smiling thanks to the amazing team at OASECT! Thank you guys so much! Would recommend OASECT to anyone! :)))))
Katie S.
12:04 15 Jul 21
Since my daughter had her first appointment at OASECT in Norwich, I knew she would receive a high level of quality care. Everyone who works in the office is friendly, kind, and comforting. The OASECT doctors and hygienists, and assistants are so knowledgeable. They walked us through the process that my daughter would be going through and stopped to answer every question to ensure our comfort. We could not ask for a better group to take care of my daughter! A sincere thank you to all of the doctors, hygienists, assistants, and employees at OASECT. You are all appreciated beyond words!
Melissa B.
22:17 06 May 21
Thank you for everything you did for Lauren. Her teeth look beautiful.
Ck G.
15:40 05 May 21
The staff at OASECT is awesome...professional, friendly and efficient. They each took the time to explain the process and never did I feel rushed, or that my questions weren’t valued. Dr Hack examined my mouth, and detailed his expectations. With his exceptional credentials (Brown, Columbia Dental/Oral Surgery, Lenox Hill residency, and specialty orthodontic training at UConn) and great bedside manner, it’s no wonder this practice is so highly rated! The office was bright, happy, and pristine! Can’t wait to see the end result!
Jennifer B.
23:24 04 May 21
The beautifulness of OASECT radiates through every facet of their service of achieving a smile that LIGHTS UP A FACE! I am now able to boast that I am a well pleased consumer of this valuable, lifelong asset of sharing smiles with my girl. Thank you, Dr. Hack, for your kindness, expertise and your of course, your smile. Recommending you and your team is pretty easy for me. I could probably talk for like seventeen minutes about how you guys got a well-oiled-machine of system making faces brighter and happier!!
Denielle S.
21:17 04 May 21
Every staff member from the minute we walked in the door was incredibly welcoming and courteous. The positive and upbeat atmosphere made my daughter feel very comfortable.
Clint V.
21:48 27 Apr 21
Very detailed and nice. I am 44 and they explained everything in detail. Great place.
Alison S.
16:34 16 Apr 21
OASECT is the best!! I highly recommend them!!! They are the BEST around!! Super friendly and caring staff! They care about their patients and always put them first! If I could give them a million stars I would!
Jocelyn G.
16:32 16 Apr 21
I love everything about OASECT! The doctors and staff are amazing! They’ve taken care of me and my two kids for years now. I highly recommend OASECT for their superior awesomeness 🙂
Beth S.
17:48 15 Apr 21
Where do I start. I have 2 children that have had Phase 1 and Phase 2 ( currently in treatment ) with OASECT. I wouldn’t go anywhere else. My experience with Dr.O’Leary and Hack started way before that. I was under another orthodontist care at the age of 19 paying my own way. I knew something was off and that’s when I made a consult with Orthodontic Associates of Southeastern CT. Not only did they take me in as a patient, they fixed some pretty serious problems with the care I was getting. I’ve had over a 20 year relationship with this practice, you will not find better. There may be cheaper or flashier but with Dr. O’Leary and Dr. Hacks years of practice and reliability, why take the chance on something as important as your smile 😁
Robbin S.
16:31 15 Apr 21
I have been seeing the Orthodontist Associates of South Eastern CT for a little over a year. Dr. O'leary, Dr. Hack and the staff are awesome. I would highly recommend them.
Jana S.
21:14 10 Dec 19
We love the staff and doctors here! They are so friendly and helpful.
Mom’s Martialarts W.
04:32 22 Nov 19
Amazing Doctors and all the Staffs are great! I am very satisfied treatment plan at OSSECT.
Kacie P.
14:31 18 Apr 19
Dr. O’Leary is amazing and all of the staff all the way to the front desk is amazing! I can’t thank them enough for everything! It changed my life. Would highly recommend
Mark G.
13:58 12 Apr 19
100% satisfied with the entire process from consultation to a much cleaner, healthier and more confident smile! The entire staff at OASECT exhibit a perfect balance of professional knowledge coupled with warm personalities. Just go for it and get the orthodontic treatment from OASECT. You will be really happy you did. A huge thank you to everyone involved in my ortho treatment. Only regret is I waited this long to do it!
Brittany S.
01:49 06 Feb 19
Truly one of the best experiences I’ve ever had when going to see a specialist. Every staff member I came in contact with was extremely accommodating and very friendly. I met both doctors and they were fast, efficient, and personable. Would HIGHLY recommend this practice to anyone who needs orthodontic treatment.
Holly M.
00:29 11 Jan 19
S. C.
01:21 06 Nov 18
The staff and Dr. O'Leary are very knowledgeable, pleasant, courteous and patient. I highly recommend this practice for anyone in need of orthodontic work.
Jay A.
17:53 08 Oct 18
Amazing experience great staff awsome team... Thank you
Kelly S.
23:41 29 Aug 18
I had an excellent experience with my older daughter here a few years ago. Our visit today is just as I remember -- staff was welcoming and friendly, received forms ahead of time to complete, and made my youngest daughter feel at ease. Everything was explained to us and certainly feel comfortable reaching out if I have additional questions.
Danielle R.
16:15 26 Jul 18
Best place to get braces or Invisalign around Southeastern CT! Everyone in their offices are amazing! The staff really goes above and beyond to make the patient feel comfortable! The doctors are always attentive and friendly. My daughter is in her second phase and my son will be getting his here in a few years!Jodi was so awesome when we did the consult and answered every question and made it easy to decide! When we came back to get her braces, Angie was the best! She made my daughter less nervous and she explained everything! They always make us feel welcome and we would recommend them to anyone that’s trying to pick where to go! This is the place, OASECT is the best!
Nicole J.
16:45 19 Jul 18
Everyone was so friendly, very thorough, great atmosphere! Update: My son had his braces put on today and we had a great experience!
Ray H.
18:08 13 Jun 18
Very impressed- knowledgeable, professional and explained everything. Got answers to all my questions from (procedures to prices) immediatly At the consultation I knew this is absolutely where I wanted my daughter's orthodontics done.
Kevin M.
21:22 04 May 18
Just finished the invisalign process. It was a great alternative to braces because I could remove them for meals and when attending meetings with clients. Most of the time people did not know I had them on.Dr. Hack was very friendly and knowledgable. It is also great to see everyone getting along so well which is why I and my family continue to recommend them to people.
Ellie G.
20:57 01 May 18
Wow!!!!! What fantastic customer service from the consultation to the braces being put on, we are 100% satisfied with the staff at OAOSC. My son use to fear the dentist but the minute he stepped foot in the office of OAOSC he was so comfortable because they took the time to explain what they would be doing every step of the way. We are actually excited to go back in June.
Patricia J.
15:16 01 May 18
Dr. O’Leary and staff are professional and knowledgeable. They did everything possible to explain treatment to my daughter and me. My daughter was comfortable and treated respectfully at each visit. I couldn’t have asked for better treatment. I highly recommend this orthodontist!
Donna C.
14:18 01 May 18
Friendly staff make having braces"tolerable" . They are thorough and patient .Would recommend them in a heartbeat...
mustangs_50 _
12:58 08 Dec 17
We love OASECT! The staff is amazing, there is always something fun going on in the office, contests, swag, themed attire, and much much more. I’ve never seen an office give back as much as they have. We’ve attended pizza/movie night, and won Red Sox tickets! My boys love going there and best of all my oldest age 15 is coming away with a great smile and a boat load of confidence. They are super flexible with scheduling. We’ve been to the Groton, Waterford, and Norwich offices all great! Thanks OASECT!
Darlene B.
10:51 08 Dec 17
always friendly and helpful
Kristin M.
20:42 07 Dec 17
The best my son and I both go.
Sanderson T.
17:40 01 May 17
My son just finished phase one of his braces. He got them off early and we are thrilled. Dr. Hack is great and so is the staff. Very fun environment for kids...including a foosball/hockey table. Coffee bar for parents....can't go wrong 🙂
Tina B.
18:48 08 Feb 17
Amazing doctors and team! If you want the best - go to OASECT.