Dentistry That Changes More Than Smiles.
Where Exceptional Care Begins
Comprehensive Dentistry. Exceptional Results.
Experience Dentistry Differently. Personalized. Comprehensive. Trusted.
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Dentistry Designed Around You.
Experience Matters. Your Smile Matters More.
A Smile You’ll Love to Share.
See What’s Possible for Your Smile.
Exceptional Care Starts With Listening.
Beautiful Results. Naturally You.
Comfortable. Welcoming. Personalized.
Cranham Culp Digital Dental
American Dental Association (ADA)
Academy of General Dentistry (AAGD)
The American Academy of Periodontology
American Academy of Cosmetic Dentistry
American Dental Society of Anesthesiology
Invisalign Provider
The Dawson Academy Making Good Dentists Even Better
Platinum Invisalign Provider 2024
NYU Dentistry
New York State Dental Association
New York County Dental Society
New York Academy of Dentistry
Northeastern Society of Periodontists
Kor Whitening
Dental Mastery
Care Esthetics
Four Leaf Best of the Boro 2025
Bethpage Best of the Boro 2024
Bethpage Best of the Boro 2023
WELCOME
Exceptional dentistry begins with listening.
At Center for Smiles, exceptional care starts with understanding you. We take the time to listen to your concerns, understand your goals, and provide honest, personalized recommendations designed for lasting oral health—not quick fixes.
For 35 years, Dr. Nicholas Rallis and our team have proudly cared for patients in Bayside, building relationships that span generations. From preventive and cosmetic dentistry to dental implants, TMJ therapy, and comprehensive smile restoration, our approach combines advanced dentistry with thoughtful, individualized care.
Our goal is simple: to help you achieve a healthy, beautiful smile that looks natural, feels comfortable, and serves you well for years to come.
Featured Services
Cosmetic Dentistry
Dental Implants
Full Mouth Reconstruction
TMJ Therapy
Invisalign®
Preventive & Family Dentistry
Complimentary In-office Seminar
Understanding TMJ, Jaw Pain & Headaches
What You’ll Learn:
• Why TMJ problems can contribute to jaw pain & headaches
• How your bite may affect jaw comfort and function
• Modern, non-surgical approaches to TMJ/TMD treatment
Tuesday, October 13, 2026
12:00 PM – 1:00 PM
Center for Smiles • Bayside, NY
- Complimentary Admission
- Limited Seating — 10 Guests
Meet Dr. Rallis
For 35 years, Dr. Nicholas Rallis has proudly served the Bayside community, helping thousands of patients achieve healthier, more confident smiles while earning a reputation for clinical excellence, compassionate care, and comprehensive treatment planning.
As a Dawson-trained dentist and member of the Dawson Academy faculty, Dr. Rallis brings an advanced understanding of comprehensive dentistry, function, and long-term oral health to every patient he treats. His expertise in restorative and cosmetic dentistry, dental implants, and TMJ therapy has made Center for Smiles a trusted destination for patients throughout Bayside and all five boroughs of New York City.
When you visit Center for Smiles, you’ll experience dentistry built on expertise, trust, education, and lasting relationships.
Meet Our Doctors
Experience You Can Trust
Nicholas Rallis, DDS
Nicholas Rallis, DDS is the Founder of Center for Smiles, a leading dental practice in Bayside, NY. Center for Smiles provides family, cosmetic and implant dentistry, and a national leader in the treatment of Temporomandibular Disorders.
Chris Chondrogiannis, DDS
Chris Chondrogiannis, DDS is a clinical instructor at New York University’s College of Dentistry Full Mouth Rehabilitation CDE program.
Konstantinos Stathopoulos, DDS
Dr. Stathopoulos graduated from the New York University College of Dentistry. Following his graduation, he acted as Assistant to the Director of the Dental Program at Coney Island Hospital.
Abra DiLisio, DDS
Dr. Abra DiLisio is a board-certified dental anesthesiologist and a diplomate of the American Society of Dental Anesthesiologists.
Why Patients Trust Us
- 35 Years in Bayside
- Advanced Training & Technology
- Comprehensive Care Under One Roof
- Personalized Treatment Planning
- Conservative, Honest Recommendations
- Long-Term Patient Relationships
Meet Our Team
Exceptional Care Starts With an Exceptional Team.
Our experienced doctors and dedicated team are committed to making every visit comfortable, personal, and positive. With a shared passion for exceptional dentistry and genuine patient relationships, we’re here to help you feel confident in your care—and your smile.
A Smile That Changes Everything
A confident smile can change the way you see yourself—and the way the world sees you. Whether you’re bothered by worn teeth, discoloration, spacing, or an older smile that no longer reflects who you are, our team creates beautiful, natural-looking smile transformations designed specifically for you. Every smile is thoughtfully planned around your facial features, personality, and long-term oral health. The result isn’t just a more beautiful smile—it’s renewed confidence you’ll feel every day. See what’s possible for your smile.
Restorative Dentistry
Whether you’re dealing with damaged, worn, or missing teeth, our restorative dentistry solutions are designed to rebuild the health, function, and beauty of your smile. From dental implants to comprehensive full-mouth restoration, our experienced team creates personalized treatment plans with lasting results.
Cosmetic Dentistry
Your smile should feel as good as it looks. Our personalized cosmetic dentistry combines artistry, advanced technology, and meticulous attention to detail to create beautiful, natural-looking results. From porcelain veneers and professional whitening to complete smile makeovers, we’ll help you achieve a smile that feels uniquely yours.
Tooth Replacements
Missing or damaged teeth can affect more than your smile—they can make everyday activities like eating and speaking more difficult and impact your overall confidence. At Center for Smiles, we offer personalized tooth replacement solutions designed to restore comfortable function, natural appearance, and long-term oral health.
From dental implants and bridges to comprehensive upper and lower tooth replacement, our experienced team carefully evaluates your needs and creates a treatment plan tailored to your smile, lifestyle, and goals. Our focus is on providing natural-looking, durable results that help you smile, eat, and live with confidence.
Real reviews. Real patients.
Trusted by Patients Throughout Bayside & All Five Boroughs
TMJ/TMD/Sleep Apnea
Jaw pain, headaches, teeth grinding, and disrupted sleep can sometimes be connected to problems with your bite, jaw joints, or airway. At Center for Smiles, we take a comprehensive approach to identifying the underlying causes of TMJ/TMD symptoms and sleep-related concerns rather than simply treating the symptoms.
Our team evaluates your bite, jaw function, dental health, and other contributing factors to develop a personalized treatment approach. Whether you’re experiencing chronic jaw discomfort, worn or damaged teeth, headaches, snoring, or symptoms associated with sleep apnea, we can help you understand your options and take the next step toward better comfort, function, and quality of life.
“I’ve been a patient at Center for Smiles for nearly four years, and I’m so grateful to have finally found a dental office that is honest and trustworthy. Dr. Rallis and his team, especially Ashley, are incredibly kind and always take the time to explain every detail of my treatment.
Under Dr. Rallis’s care, I feel confident that I’m on my way to achieving a healthier, more beautiful smile. If you’re looking for a professional, high-tech dental office with a team that truly cares about its patients, look no further. Trust me, Center for Smiles is the place to go!”
– B Trochez
Contact Today
Ready to Smile with Confidence?
Whether you’re looking for a trusted family dentist, considering dental implants, exploring cosmetic dentistry, or searching for relief from TMJ discomfort, we’d love the opportunity to welcome you to Center for Smiles.