Holy City Dentistry

Holy City Dentistry

Now Open and Accepting New Patients! BOOK ONLINE HERE! https://www.flexbook.me/hcdentist/f

We look forward to meeting you! Dr. Kristy (Greenfield) Castles


All of the Angel Tree donations are getting dropped off to Salvation Army today! Thank you to everyone who participated! 🎄❤️

Photos from Holy City Dentistry's post 12/02/2023

Our team had the best holiday celebration with a private cooking class at last night! Thank you Chef Bob for being an incredible host, everything was so delicious and fun! 🎄🦷

Photos from Holy City Dentistry's post 11/28/2023

It’s Angel Tree season!! 🎄🪽✨

We have both trees up again- one to support and one to support ❤️

We still have some tags left so come on by! Gifts are due back to our office on December 7th

Photos from Holy City Dentistry's post 10/31/2023

Happy Halloween! 🎃👻

It’s been a very busy October- our team took a trip to Arizona this month for some Continuing Education (and fun)!

The rarity of finding a group of women that is so supportive, passionate and uplifting is not lost on me. They put their heart into each other, our patients and our office. I can say with full confidence that every one of these ladies is one of the best in the dental field. I’m so proud of this team and where we’re heading! 💕

Photos from Holy City Dentistry's post 10/26/2023

This before and after of this sweet patient was courtesy of a 2+ year journey of Invisalign, gingival grafting with the amazing , a combination of crowns/veneers and whitening. So grateful for the faith she gave me to trust the process so we could be as conservative as possible while still achieving a beautiful, life-changing result! 💕


FOUND! Very stylish Vans right shoe, size US toddler 7 found in our patient bathroom.

Looking for the owner to the other half! Please contact us if you recognize it 😅


My baby girl is 9 months old! 💕

I wanted to thank our community of patients and my team for their overwhelming support through this new journey of parenthood! I have so enjoyed being able to share this exciting time in our family’s life.


oh deer!
HCD is headed out for the weekend to enjoy Christmas with our families 💕
We return 12/27 @ 8 am and hope our patients have a safe and VERY Merry Christmas! 🦷🎄

Photos from Holy City Dentistry's post 12/19/2022

What an incredible season it is ✨
Another amazing donation made to Pet Helpers and our first ever delivery to Salvation Army 👼
We spent our Christmas party reflecting on the sheer joy this act of service brings us every year 🥰
Thank you so much to our patients and their friends and family for always showing up for those who need it most 💙

Photos from Holy City Dentistry's post 12/05/2022

Our final 7 angels are awaiting their sponsor 💕
Please call the office or stop by to inquire on how to donate to an incredible cause! Thank you so much to everyone who has already donated ✨

Photos from Holy City Dentistry's post 11/10/2022

Holy City Dentistry is feeling extra thankful this giving season!
Last year our patients absolutely blew us away with our Pet Helpers angel tree that we decided to do it again... with a surprise! 🐶 👼

Our practice, for the first time ever, is hosting a Salvation Army Angel Tree AND a Pet Helpers Angel Tree! One tree has 30 amazing children in need and the other has 12 incredible pets to provide for! We couldn’t be more excited for the opportunity to show Charleston some love in the best way we know how 🤍

Patients and their friends and family are welcome to stop by our office and grab a ticket off of the desired tree of their choice. Each ticket has the needs and wants of the specific recipient!

Salvation Army donations are accepted through Wednesday, December 7th, 2022 and are to be delivered to HCD 🦷 🥰

Pet Helpers donations are accepted through Wednesday, December 14th, 2022 and are also requested to be returned to HCD 💙

Our team is so motivated by the heart of our patients and their willingness to give. We love Charleston so much and can’t wait to make a difference this holiday season 🎄🥰
Please feel free to contact the office with any questions and we can’t wait to see you soon!


“An ordinary dental office with an extraordinary team will always be infinitely more successful than providing extraordinary dentistry delivered by an ordinary team.” -Howard Farran, DDS, MBA

We feel so lucky to provide BOTH extraordinary dentistry with an extraordinary team! ⭐️

Happy National Dental Hygiene Month from the best in the business 🦷 💙
Lael has been with us for 2 years now and we are so excited and proud to announce our newest, and sweetest, addition -Kacie 😇
Thank you for the exceptional care and devotion you both provide to our patients every single hour on the hour. We are so grateful and proud of you two! 💙

Photos from Holy City Dentistry's post 08/16/2022

I’m so excited to announce that Carolyn Gantt Castles entered this world on 8/10/22! We are all happy and healthy and recovering at home.

Thank you so much to my team and our patients for their overwhelming support, and for allowing me to spend this precious time with our little one. I will be back on September 12th, but thanks to my amazing team, I know the office is in great hands until then. We are so blessed! ❤️

Photos from Holy City Dentistry's post 08/08/2022

This throwback is brought to you by the best dental assistants we could ask for! ❤️

Penny and Bianca are an incredible duo that work alongside Dr. Castles to get your smile back to healthy - all while making sure you remain relaxed and comfortable.

In her spare time, Bianca loves fishing and spending time with her dog Riggs 🐶

Penny can be found relaxing in the edisto or petting and loving any cat that comes her way 😻

Our team wouldn’t be the same without these women and for that we are eternally grateful! 💕

Photos from Holy City Dentistry's post 07/29/2022

Happy Friday from the HCD Team! Today’s throwback picture to honor Dr. Castles’ impending due date is our incredible Office Manager Angie ♥️

Angie is normally in her office calling insurance companies and keeping up with all the ins and outs that make our office function. She also transitions to the back some days to assist Dr. Castles in restorative procedures. 🦷

She was born and raised in Johns Island and loves gardening and hunting during deer season 🌺 🦌

Angie has been with us for almost two years now and we would fall apart without her! 💕

Photos from Holy City Dentistry's post 07/21/2022

In honor of Dr. Castles’s upcoming due date, we’re throwing it back to baby pics of our team 🤰👶

Many of you have already met Taylor, our front office coordinator! She will often be the one greeting you at the front desk with this same facial expression 🤗

Taylor has been with us for almost a year and we’re so blessed to have her as a vital part of our team! ❤️

Photos from Holy City Dentistry's post 05/15/2022

Holy City Dentistry has been open for 2 years! 🥳

My team & I took a sweet retreat out to Kiawah this weekend to celebrate our 2 year anniversary! They also surprised me with the cutest baby shower 🥹💕 These ladies work so hard to make our office as special as it is and I’m so thankful to have found a team that is as passionate about providing excellent care to our patients as I am. Their support is unyielding and I couldn’t have asked for a better group. It’s such a privilege to call them both team members and friends- they deserve all the praise.

I’m so grateful to everyone that has been a part of this journey! ❤️


So fun having dental school friends stop by the office! Dr. Collie & his wife Jessica are expecting in June so we had him surrounded today! 🤰🏻❤️🤰🏼


We had an excellent Continuing Education course today with the legendary Gordon Christensen. We’re so thankful he came to Charleston from Utah to see us!


My parents are getting us a human! 🤗

Baby girl Castles due in August 💕

So grateful for the immense amount of support we’ve received already! ❤️


All of our reviews mean a great deal to us, but this one especially hits home. For me, gaining the respect of your team is invaluable. Trust from your colleagues is earned- they see the decisions you make and the work that you perform day in and day out.

I’m so lucky I’ve found my tribe. They put their all into this office and treat our patients with the kindness they deserve. Thank you Dianna for putting this so eloquently into words that mean so much to us! ❤️

Timeline photos 12/23/2021

“Santa baby, slip a Sabal under the tree, for me” 🎶 & a Dawson too ❤️ ⠀⠀⠀⠀⠀⠀⠀⠀⠀
These sweet babies bring our practice so much joy, we are so grateful for them! We will be closed tomorrow until Monday to enjoy this time with our families. Merry Christmas from Holy City Dentistry - we hope our patients have the best holiday! 🎄🎅🏼

Photos from Holy City Dentistry's post 12/07/2021

It’s Christmas in the Holy City! 😇 As a means of giving back to our beautiful city, we are partnering with Pet Helpers to sponsor an angel tree for shelter animals this winter. Each card on our tree has the face of a sweet pet with the opposing side having their needs to accommodate them in their temporary home. This tree will be in our practice until December 31st and any donations will be accepted until January 12th, 2022.
We love our patients and their heart for giving so we can’t wait to see what capable of doing together for Pet Helpers! Stop by today and grab a pet to bring some holiday cheer this season 💙🐱🐶🦷

Scheduling 10/20/2021

In honor of October being National Dental Hygiene Month, we want to introduce our favorite dental hygienist- Lael! 🤗🦷🪥

The need for extensive dental treatment as a teen first fostered Lael’s fascination and appreciation of dentistry, which led to her first job in high school working as a dental assistant. In fact, Lael earned a college scholarship with an essay titled, “How Braces Changed My Life”! She grew up with a big family in Indiana, as one of seven children, prior to moving to Charleston in 2008.

Lael’s favorite title is Aunt. Her most special day is one spent in the backyard with her husband, Michael, and their pups, Wrigley and Willow. Some of her proudest accomplishments include completing numerous long distance trail races, with several at 100 miles! She especially enjoys gardening, paddleboarding the creeks of James Island, live music, rock climbing, and exploring the outdoors.

Lael has been with our office for almost a year, and we feel so lucky to have her as an integral part of our team. Her joy is infectious and her kind heart has garnered her many raving fans over her 14 years of being a dental hygienist. You can often hear our patients cracking up with her, sharing personal tidbits and forming long lasting relationships, which is what our office is all about!

Lael holds the unique ability to immediately ease the anxiety of our patients, and she’s equally passionate about patient education and giving the utmost quality of care. If anyone has figured out how to clone a person so we can have two Lael’s, please let us know! 🤣


Photos from Holy City Dentistry's post 09/25/2021

One of the best trips to Seattle yet surrounded by this group of such talented & supportive ladies! I’m feeling so grateful to continue on this journey and capture such a wealth of knowledge and wisdom from Dr. John Kois, a leader in the evolution of dentistry.

I expected to feel invigorated and informed on the latest advances in dentistry after attending these courses, but what I underestimated is the camaraderie you can form with fellow dentists also going down this path. Passion led us here. It can be easy to feel like you’re alone on an island as a solo practitioner, but this community is strong, inspiring and so reassuring. 💪🏻

“Never regard your study as a duty, but as the enviable opportunity to learn the liberating beauty of the intellect for your own personal joy & for the profit of the community to which your later work will belong.” - Albert Einstein


I feel so blessed to have the BEST dental team I could ever dream of!

My team is the heart of our office and I’m lucky to work every day surrounded by this group of women that are each so hardworking, talented, selfless and caring.

I’m incredibly grateful for this crew and to have a team that can laugh & smile together in addition to working hard each week!

Thank you to my amazing team for turning this office into a home and taking such phenomenal care of our patients ❤️


Holy City Dentistry turned 1 this week! We did it! 🎉

This has undoubtedly been the most taxing yet rewarding year of my life. I thought I knew what hard work was after undergoing 9 years of higher education and working for 4 years as an associate dentist, until I also became a small business owner. I go to sleep thinking about the office, wake up thinking about the office, and even sometimes dream about the office. There have also been countless sleepless nights (mostly during the construction phase 😅). I often get so caught up in the day to day busyness and to-do lists, that I have to force myself to stop and appreciate where we are now. Today is one of those moments. I look in awe at the office that was demolished all the way down to a dirt floor, and rebuilt in the design I sketched way too many times.

Sometimes it feels like I’ve aged 20 years in only two 😂 but then the next day, I’m reminded why I did this when we have the sweetest patients that tell us how grateful they are that we opened, that they finally have an office they can trust, and how shocked they are that they actually look forward to coming to the dentist now. The support and understanding from our community has been steadfast and overwhelming.

My husband and I were both told numerous times in the beginning that this was a bad idea- that you can’t just hang a shingle anymore, that corporate dentistry is the future, and that this would ultimately fail and cripple our family. I’m so glad that he believed in us enough to ignore the naysayers and support my dreams, while juggling pursuing his own. He is a true partner in every sense of the word.

Last but certainly not least- my team. My heart bursts just thinking about every single one of them individually and as a whole. I can only be as good as the people that I surround myself with, and I thank God everyday for bringing these outstanding, kind-hearted friends to me when I have needed them the most. I truly cannot say enough good things about them, so I have another post coming to dedicate to just them- stay tuned 🥰


In the latest development at HCD, we have temporarily turned one of our unfinished treatment rooms into a visitation room to say hi to the office pups on your way in and out!

We understand the anxiety that can so often come with dental treatment. Sabal will be undergoing Canine Good Citizen training once he’s older to be available as an emotional support dog for our patients upon request, but for now, we’re easing him into office life on Tuesday’s and enjoying having some puppy breath in the office! 🐶


When I envisioned opening my dental practice from scratch less than a year ago, I tried to focus on the average patient’s least favorite aspects of visiting the dentist and doing everything we can to make it better.

In the spirit of our commitment to continual growth and development, we now have an iTero 5D intraoral scanner in the office! This removes the need for those goopy and gag-inducing impressions for 90% of our procedures, while adding increased accuracy, speed, and comfort.

Using the latest technology helps us improve not only our diagnosis and treatment planning, but also our communication with patients and their overall experience. This is revolutionary technology and we’re so happy to offer it for our patients!

Photos from Holy City Dentistry's post 02/28/2021

After 5 full days and 55 hours of intensive continuing education from an absolute pioneer in our industry, I’m leaving Seattle feeling invigorated, empowered, exhausted, and so ready to continue on this journey. Dr. John Kois is one of the best educators in the dental field. I learned so much from him this past week, not only about evidence-based clinical dentistry and customized treatment planning, but also about practice philosophy, systems, and quality of life.

To witness someone that has dedicated 30+ years to the latest advances and research in esthetics, implants and restorative dentistry share that wealth of knowledge in such a genuine, tangible way is a true gift. This is how you go from good to great, from great to excellent. This is how you perfect your craft. It takes hard work, sacrifice and a true passion for quality dentistry- it’s contagious, overwhelming and transformative all at the same time.

Forming friendships with other like-minded dentists focused on the relentless pursuit of excellence was the cherry on top of this experience. How lucky were we to have a limited class size and such one-on-one time with one of the greats so early in our careers?

Starting this journey with the Kois curriculum has been on my professional bucket list ever since I graduated dental school 6 years ago. I feel so grateful to begin this journey after opening my practice only 9 months ago, in the midst of quite a tumultuous year. Thank you to those who pushed me to take this leap and believe in myself.

As John says, “if you’ve reach all your goals in life, I feel sorry for you.” I’ve never been more inspired to be the best dentist I can be for my patients, and to continue on this path. My goal is, and always has been, to be better today than yesterday, and strive to be even better tomorrow.

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Experience Dentistry The Way It Should Be

Are you ready to take everything you dislike about going to the dentist and put it all behind you? We certainly have.

At Holy City Dentistry, our focus is on you, our patient. Not our bottom line. Not seeing as many patients as possible. Not becoming the largest dental practice in the Lowcountry. Just you.

We are dedicated to providing a positive experience to each patient every time they visit our practice. We accomplish this through personalized care from Dr. Kristy Castles (formerly Dr. Kristy Greenfield) and our team, an inviting and judgement-free atmosphere, use of the most recent technology, and a willingness to spend as much time as necessary to ensure every question or concern is addressed.

Our dentist, Dr. Castles, personally sees each patient at every visit, enabling her to establish a personal relationship and keeping her familiar with their oral health and treatment history.

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862 Folly Road Suite 110
Charleston, SC

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 9am - 6pm
Thursday 9am - 6pm
Friday 8:30am - 2:30pm

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