Patient Reviews
"The staff is WONDERFUL!!! My granddaughter and I had anxiety about her getting braces and me getting Invisalign but the Dr and her team put us both at ease. From answering questions, setting up payments and scheduling.Thank you"
"They did my son’s Invisalign. Everyone is friendly and have been amazing in the entire process."
"Amazing staff and amazing results. I went to them for Invisalign and they worked with me and fixed all issues I had until I was completely happy with how my teeth looked. Every time I went in and brought up a small flaw that was bothering me, they went above and beyond to fix it. I will recommend Greeley & Nista to everyone from now on! 100% in love with my results!"
"I was recommended by my dentist and I’m so happy I found this place. I just had my first appointment to start treatment for Invisalign and I’m so excited! The staff is supper friendly and nice even with my first constitution they were amazing can’t wait until my trays come in on my next visit"
"I had my Invisalign treatment done here with Dr.Nista. My experience with the office and Dr.Nista has been nothing short of excellent. From the beginning I was communicated accurately on what I should expect. This is a very professional office and they’re incredibly helpful. I finished my 40 week treatment today and my teeth look great! If there is anyone who is looking at treatment I would 100% recommend going to Dr.Nista’s office. I was not disappointed and I’m sure many would agree."
"Our eighth grader got her braces off yesterday which completes our many years at GNO. Thanks to Dr. Nista and his entire staff including the technicians and front desk personnel we now have five beautiful smiles in our family. Dr. Nista not only creates beautiful smiles but does so in a professional and friendly manner. His entire staff is competent and wants to do right by each and every patient. I highly recommend this practice for both regular braces as well as Invisalign."
"I just completed my Invisalign treatment and I'm very happy with the results. Everyone is super friendly and helpful and I would definitely recommend GNO to anyone looking for an orthodontist!"
"Most people don't start their orthodontic journey later in life – but that's how it worked out for me. My first step in addressing my overcrowded and less than straight teeth came when I was in my 50's. I have to admit – I was nervous that it wouldn't even work. I have a lifetime of dental issues to accommodate – root canals, crowns and implants to name a few. I was nervous and not terribly optimistic – but I decided to give it a try. I chose Dr Greely because he managed both of my children's orthodontia with great results. He worked closely with my family dentist and periodontist to make a plan that worked for me. Success! After 18 months (a little longer than planned - thank you covid) I completed my Invisalign treatment today! No more crowded teeth – my smile is straight for the first time – ever. Invisalign is easy and it works – even for more mature patients like me.Dr Nista is a great guy – easy to talk to and work with and he runs a fun office with engaged, caring staff. It's not all pre-teens and teenagers. I felt very comfortable, each visit. If you, like me, have put off getting the smile you always wanted, call Dr Nista – you'll be happy you did!K.McG"
"I have been very pleased with Dr. Nista! He is warm and welcoming with children and makes us feel like part of a family. I have completed Invisalign as an adult with him, my oldest completed phase 1 treatment and my youngest is now getting ready to begin. Wonderful staff and office that comes highly recommended! Thank you for everything"
"Our kiddo has been a patient of GNO for over two years and today he started Invisalign treatment! Dr. Nista and the practice technicians and staff are very professional and caring. I especially value how the practice takes the time to explain specific procedures and the patient's responsibilities with regard to their own treatment."
"I am a patient of Dr. Nista and currently in Invisalign. the price is great and the entire office is so friendly and helpful.Now it is my youngest daughter’s turn. She went for her consultation today and the staff and Dr. Nista made her feel very comfortable. Prior to our visit, me and my daughter each received a welcome letter, with a sheet for my daughter to fill out about herself (fav sports, hobbies, nickname, etc) The Price is very reasonable and my daughter felt very comfortable with the those she interacted with today. They always have something going on for the kids, which is currently a coloring contest to win $100. They give you the picture and paints, glitter etc., to complete your coloring page. My daughter chose her picture to color for the contest and we will post on FB for the judging.I highly recommend Dr. Nista and Team for your Braces/Invisalign experience : )"
"Dr. Nista and his staff were friendly and made my daughter feel excited about getting her Invisalign done for her upcoming new smile. Dr. Nista even called the night before her appointment to introduce himself to us.I would highly recommend him to all my friends and family who are looking for an Orthodontist!!"
"Went into the office today for my son to get his Invisalign only to realize that I was a day early. Christy was amazing and so friendly. She was able to fit us in and work around other patients coming in. She saved me from having to take off another day of work to turn around and bring my son back into the office."
"I got Invisalign as a teen and I love it. The staff is awesome and Dr. Nista is the best! Best ortho choice in Delaware!"
"I just completed Invisalign with GNO and wanted to share my experience. First, everyone at GNO was great! I had an amazing experience as an adult patient. I highly recommend Invisalign. It was easy, painless, with only 4 appointments and the results are fantastic. I am extremely pleased with my smile. Thanks GNO."
"I have been treated at Greeley Nista Orthodontics for about 2 years.I had Invisalign braces for almost a year then finished off with some regular braces. My bite was corrected and the serious crookedness of my stubborn tooth. I am very pleased with the work this group has done. Doctor Nista and each technician I have had has done a very excellent job. Everyone in their office is great - I would recommend this orthodontist highly."
"I only gave Dr. Nista 5 stars, because that the most you could give. I had a wonderful experience with Invisalign retainers. I had a tooth that had almost twisted completely around on the bottom front. I figured I needed a couple of braces, but wasn't really looking forward to going through the process (probably the reason I waited as long as I did). Dr. Nista gave me the option of braces or the Invisalign process. I was skeptical, but decided to try them out. Wasn't completely sure it was going to work or if it would really be able to make the tooth come completely around and straight. Well, after 20 weeks, I was convinced that it was going to work. By 30 weeks, we were done. People that know me are commenting and can't believe that they actually worked as well as they did. Years ago, my son had a major construction project, over the course of several years, that needed to be done and that worked out great too! Dr. Nista and his staff are truly the best. I have never been to an office where everyone is always happy. The staff, truly loves their job and it shows. Dr. Nista is the one to go to if you need any type of ortho work. I know, I'm going to miss the positive environment, since my teeth are now done, but will always recommend anyone needing an Orthodontist to this office. He really is the best!"
"Got my Invisalign this week and I’m so excited!!! Awesome staff"
"We love Dr. Nista! We are a family of 5, and Dr. Nista has treated 4 of us! We are all very pleased with our results and with the way we were treated at every visit. The best part about seeing Dr Nista is how friends and family notice how good our teeth look. My sister (who lives with the movie stars in LA) noticed how good my teeth looked after Invisalign and decided to get it for herself! Even my dentist and his hygienist complimented the results of my Invisalign. For someone who has had a lot of teeth problems, this is huge to me. For Dr. Nista, I appreciate all your patience and care! Thank you!"
"I had the best experience at Greely and Nista Orthodontics. They made it very easy for me to balance being a college student and scheduling appointments. I just finished up with Invisalign a few days ago and couldn't be happier with my results. I was so impressed they were able to fix my underbite and cross bite all with Invisalign and it took no longer than about 15 months. The people there are very kind and I'm very glad I choose Greely and Nista."
"GNO Orthodontics is the BEST. I would highly recommend this practice for any one looking for an orthodontist. The entire process, from my consultation appointment to getting my Invisalign off exceeded my expectations. As a busy working professional the staff was very accommodating with appointment times. The office staff was very friendly, gentle and knowledgeable. I absolutely loved the dynamic between Dr. Nista and hygienists."
"Enjoyed wearing the invisalign. Hard for people to notice i had them, unless they were up close and personal. My invisalign treatment took less than a year, which was an added bonus to them being clear braces. Overall, i loved wearing invisalign!"
