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.

One of the questions we hear most often is, "What happens during my child's first dental visit?" 💚The answer is simple: ...
08/06/2026

One of the questions we hear most often is, "What happens during my child's first dental visit?" 💚

The answer is simple: we take it one gentle step at a time.

From the moment you arrive, our goal is to help your child feel comfortable and supported. Every visit is tailored to your child's age, personality, and developmental stage.

During the appointment, Dr. Lis will gently examine your child's teeth, gums, bite, jaw development, and overall oral health. For infants, the exam can often be completed while they sit comfortably on a parent's lap, helping everyone feel more at ease.

Our focus isn't just on healthy teeth. It's on creating a positive experience that builds trust and confidence from the very beginning. 🪥✨

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

08/04/2026

Your child's first dental visit is about so much more than checking teeth. 💚

Early visits give us the opportunity to monitor your child's oral development, look for early signs of tooth decay, and provide guidance on brushing, nutrition, fluoride, and habits like thumb sucking or pacifier use.

Just as importantly, these visits help children become familiar with the dental office in a positive, relaxed environment. When kids build trust early, they're more likely to feel comfortable and confident about dental care as they grow.

At Once Upon a Tooth, our goal is to help every child begin their smile journey with gentle, preventive care and positive experiences that last a lifetime. 🪥✨

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

A new backpack? ✔️School supplies? ✔️A healthy smile? Don't forget that one! 🎒🦷Before the school year gets busy, schedul...
07/30/2026

A new backpack? ✔️
School supplies? ✔️
A healthy smile? Don't forget that one! 🎒🦷

Before the school year gets busy, schedule your child's back-to-school dental checkup.

Routine visits help keep smiles healthy with professional cleanings, early cavity detection, and personalized guidance as your child grows. It's also a great opportunity to refresh healthy brushing and flossing habits before school routines are in full swing.

Starting the year with a healthy smile can help your child feel confident and ready for everything the new school year brings. 💚

We're here to make every visit fun, educational, and stress-free for children of all ages.

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

07/28/2026

Brushing and flossing at home are the foundation of a healthy smile, but they're only part of the picture. 💚

Professional dental cleanings remove plaque and tartar that can build up in hard-to-reach places, helping reduce the risk of cavities, gum disease, and other dental problems.

At Once Upon a Tooth, every cleaning is about more than polishing teeth. We take the time to teach children healthy habits, answer questions, and help them feel comfortable and confident at the dentist.

Our goal is to make every visit a positive experience so children can build healthy smiles and healthy habits that last a lifetime. 🪥✨

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

Every child deserves dental care that meets them where they are. 💚At Once Upon a Tooth, we understand that every stage o...
07/23/2026

Every child deserves dental care that meets them where they are. 💚

At Once Upon a Tooth, we understand that every stage of childhood brings new milestones, new questions, and different dental needs. Whether your child is visiting for the first time, feeling a little nervous, or seeing their permanent teeth come in, we're here to provide gentle, age-appropriate care.

Our team focuses on helping children feel comfortable and confident while giving parents the information they need to make informed decisions about their child's oral health.

Because we see your child as they grow, we're also able to monitor subtle changes in their teeth, bite, and jaw development over time. That means we can identify concerns early and help guide healthy, balanced smiles for years to come.

We're honored to be part of your family's journey, one smile at a time. 🪥✨

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

07/21/2026

An orthodontic screening is a simple part of your child's dental visit that helps us monitor how their smile is developing. 💚

During the screening, we evaluate tooth alignment, jaw growth, bite, and the way permanent teeth are coming in. We also look for concerns such as crowding, spacing, overbites, underbites, crossbites, and changes related to habits like thumb sucking.

By identifying potential concerns early, we can often guide healthy development, monitor changes over time, or recommend the right next steps if treatment may be beneficial in the future.

At Once Upon a Tooth, our goal is to support every stage of your child's growing smile with thoughtful, preventive care. 🪥✨

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

Behind every smile at Once Upon a Tooth is Dr. Lisneida "Lis" Arjona. 💚As a board-certified pediatric dentist and Diplom...
07/16/2026

Behind every smile at Once Upon a Tooth is Dr. Lisneida "Lis" Arjona. 💚

As a board-certified pediatric dentist and Diplomate of the American Board of Pediatric Dentistry, Dr. Lis has dedicated her career to caring for children's growing smiles. After earning her dental degree from Columbia University and completing her pediatric dental residency at Yale New Haven Hospital, she chose to focus on creating positive dental experiences for children of every age.

As a mom herself, she understands the trust parents place in their child's dental team. That's why every visit is centered on compassion, education, and helping children feel safe and confident.

Her passion for caring for children extends beyond our community through humanitarian dental missions serving underserved children in places including Harlem, the Dominican Republic, Syria, and Cambodia.

Whether it's your child's very first tooth or their teenage years, Dr. Lis is committed to helping every child feel comfortable, cared for, and proud of their smile. 🪥✨

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

07/14/2026

Teething can be a challenging time—for babies and parents alike. 💚

Cold therapy is a simple, gentle way to help soothe sore gums. Here are a few ideas to try:

🧺 Offer a chilled, clean washcloth for your baby to chew on.
🍓 For babies who are eating solids, chilled fruit in a mesh feeder can provide soothing relief.
🥄 A cool metal spoon gently rubbed along the gums may help reduce discomfort.
💧 For babies over 6 months, a few sips of cool water can also be comforting.

Every baby is different, so it may take a little trial and error to find what works best. If your baby seems to be in significant discomfort or you have concerns about teething, don't hesitate to reach out to your pediatrician.

At Once Upon a Tooth, we're here to support your family through every stage of your child's smile. 🪥✨

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

Every dental visit is a chance to help children build healthy habits that last a lifetime. 💚At Once Upon a Tooth, we do ...
07/09/2026

Every dental visit is a chance to help children build healthy habits that last a lifetime. 💚

At Once Upon a Tooth, we do more than check teeth. We teach children how to brush with the right technique, floss effectively, make tooth-friendly food choices, and understand why daily care matters.

We tailor every lesson to your child's age and stage of development. Younger children learn through songs, visuals, and hands-on activities, while older kids and teens discover how oral health supports their confidence, overall health, and active lifestyles.

When children understand the "why" behind healthy habits, they're more likely to make those habits their own. 🪥✨

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

07/07/2026

Hearing your child needs a filling can feel overwhelming—but the experience doesn't have to be. 💚

At Once Upon a Tooth, we create a calm, supportive environment where children feel safe from the moment they arrive. Dr. Lis and our team use gentle, reassuring language, age-appropriate explanations, and distraction techniques to help every child feel comfortable during treatment.

We also have experience caring for children with dental anxiety, sensory sensitivities, and special healthcare needs, always adapting our approach to what works best for each child.

Our goal isn't just to restore a tooth. It's to help your child leave feeling proud, confident, and ready for their next visit. 🪥✨

📍 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

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