Once Upon a Tooth

Once Upon a Tooth Dr. Lis - Board Certified Pediatric Dentist. Minimally invasive, mindful, gentle dentistry for kids.

Welcome to Once Upon a Tooth, the premier pediatric dentist in Eastchester, NY. Our practice is led by board-certified pediatric dentist Dr. Lisneida “Lis” Arjona, who is dedicated to providing top-quality dental care for children of all ages. Kids require specialized care, and we strive to create a welcoming and friendly environment where children can feel comfortable and safe during their dental

visits. We offer preventative dentistry such as regular checkups, cleanings, and fluoride treatments to keep your child’s teeth healthy and strong. We also offer restorative dentistry services such as fillings and crowns to repair any damage or decay that may occur.

06/02/2026

One of the most common questions parents ask is: "Does my child really need dental visits every six months?" 💚

For most children, the answer is yes.

Regular checkups do much more than clean teeth. They help prevent cavities, monitor growth and development, reinforce healthy habits, and create positive experiences that can reduce dental anxiety over time.

Whether you have a toddler, school-age child, or teenager, routine preventive care plays an important role in your child's overall health and well-being.

👉 Read our latest blog to learn why six-month visits matter and how they help support healthy smiles for life:
https://www.onceuponatooth.com/post/how-often-should-kids-visit-a-pediatric-dentist-in-eastchester-ny

📍 Eastchester, NY
📞 914-348-4348
🌐 www.onceuponatooth.com

Orthodontic screenings are about more than braces—they help us monitor how your child’s smile is growing and developing ...
05/28/2026

Orthodontic screenings are about more than braces—they help us monitor how your child’s smile is growing and developing over time. 💚

During your child’s visit, we look at tooth alignment, bite, jaw growth, facial development, and oral habits that may affect future dental health.

Sometimes early guidance or interceptive treatment can reduce the need for more complex orthodontic care later on. Other times, we simply continue to monitor growth and recommend the right timing for future orthodontic care if needed.

At Once Upon a Tooth, our goal is always to support healthy development with thoughtful, child-centered care. 🪥✨

📍 Eastchester, NY
📞 914-348-4348
🌐 www.onceuponatooth.com

05/26/2026

When a baby tooth is lost too early, the surrounding teeth can start to shift into the open space. 💚

Over time, this may affect how permanent teeth come in and could lead to crowding or alignment concerns later on.

That’s where space maintainers help. These small, custom-made appliances hold space for adult teeth while your child’s smile continues to grow and develop.

At Once Upon a Tooth, we provide child-friendly space maintainers designed to be comfortable, functional, and supportive of healthy smile development. 🪥✨

📍 Eastchester, NY
📞 914-348-4348
🌐 www.onceuponatooth.com

Baby teeth may be temporary—but their impact lasts much longer than most parents realize. 💚They help children speak clea...
05/21/2026

Baby teeth may be temporary—but their impact lasts much longer than most parents realize. 💚

They help children speak clearly, chew comfortably, and guide adult teeth into the right position as they grow. When baby teeth are lost too early, it can sometimes lead to crowding, bite issues, and future orthodontic concerns.

That’s why protecting baby teeth is such an important part of your child’s overall health and development.

At Once Upon a Tooth, we focus on prevention, education, and gentle care to help growing smiles stay healthy from the very beginning. 🪥✨

📍 Eastchester, NY
📞 914-348-4348
🌐 www.onceuponatooth.com

05/19/2026

Kids are full of energy—and sometimes dental accidents happen along the way. 💚

Whether it’s a chipped tooth from the playground, a cracked tooth from biting something hard, or a sports-related injury, getting prompt care can make all the difference.

At Once Upon a Tooth, we provide gentle, compassionate emergency tooth repair designed specifically for children. Our goal is to relieve discomfort, restore function, and help your child feel calm, safe, and confident again. 🪥✨

📍 Eastchester, NY
📞 914-348-4348
🌐 www.onceuponatooth.com

Did you know one of the simplest ways to help prevent cavities is also one of the most effective? 💚Dental sealants are t...
05/14/2026

Did you know one of the simplest ways to help prevent cavities is also one of the most effective? 💚

Dental sealants are thin protective coatings placed on the back teeth to help keep out food and bacteria—especially in the deep grooves where cavities often begin.

They’re quick, painless, non-invasive, and especially helpful when permanent molars first come in during cavity-prone years.

At Once Upon a Tooth, we focus on gentle, preventive care that helps protect growing smiles early—while keeping visits positive and stress-free. 🪥✨

👉 Read our latest blog to learn more about how dental sealants support long-term oral health: https://www.onceuponatooth.com/post/children-s-dental-sealants-in-eastchester-ny-a-parent-s-guide-to-preventing-cavities-early

📍 Eastchester, NY
📞 914-348-4348
🌐 www.onceuponatooth.com

05/12/2026

A smile is so much more than what we see. 💚

For children, healthy smiles support confidence, communication, comfort, and connection. They help kids express joy, build friendships, and grow into themselves feeling secure and proud.

At Once Upon a Tooth, we’re honored to play even a small role in helping children feel proud of their smiles through gentle care, positive experiences, and healthy habits that last a lifetime.

Because every confident smile starts with feeling safe, supported, and cared for. 🪥✨

📍 Eastchester, NY
📞 914-348-4348
🌐 www.onceuponatooth.com

As a pediatric dentist, I have the privilege of caring for children every day.But as a mom, I understand something even ...
05/08/2026

As a pediatric dentist, I have the privilege of caring for children every day.

But as a mom, I understand something even more personal—the love, the worry, and the quiet hopes we carry for our children. 💚

I know what it’s like to remind your child (again!) to brush…
To wonder if you’re doing enough…
To want every experience—especially at the dentist—to feel safe and positive.

That’s why Once Upon a Tooth was built with families in mind. Every gentle visit, every encouraging word, every small moment of patience—it’s all intentional. Because I want your child to feel the same comfort and trust I would want for my own.

With Mother’s Day just around the corner, I’m celebrating you.

For the routines you hold together.
For the care you give so selflessly.
For the way you show up—every single day.

You are the reason your child’s smile is growing strong. 🪥✨

With gratitude,
Dr. Lis 💚

📍 Eastchester, NY
📞 914-348-4348
🌐 www.onceuponatooth.com

05/05/2026

May is Save Your Tooth Month—and for kids, it starts early. 💚

Saving teeth isn’t about fixing problems later. It’s about preventing them before they begin. That’s where small, consistent habits make all the difference.

At Once Upon a Tooth, we focus on catching concerns early, supporting strong brushing and flossing routines, and using gentle, preventive care to protect growing smiles.

Just as importantly, we create positive experiences that help children feel safe and confident—because when they do, healthy habits follow naturally. 🪥✨

📍 Eastchester, NY
📞 914-348-4348
🌐 www.onceuponatooth.com

Caring for children goes beyond the walls of our office. 💚Dr. Lis is deeply committed to supporting children not only in...
04/30/2026

Caring for children goes beyond the walls of our office. 💚

Dr. Lis is deeply committed to supporting children not only in our local community, but also in underserved communities around the world. Through dental missions both nationally and internationally, she has helped provide care to children who may not otherwise have access to it.

From Harlem to the Dominican Republic, Syria, and Cambodia, her work reflects a belief that every child deserves the opportunity for a healthy smile.

It’s all part of what “state of the heart” care truly means—compassion that extends far beyond the dental chair. 🪥✨

📍 Eastchester, NY
📞 914-348-4348
🌐 www.onceuponatooth.com

Address

266 White Plains Road, Suite 1C
Eastchester, NY
10709

Opening Hours

Monday 9am - 5pm
Tuesday 9am - 5pm
Wednesday 9am - 5pm
Thursday 9am - 5pm
Friday 9am - 5pm

Telephone

+19145561961

Website

https://flexbook.me/onceupon/website

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