A pediatric specialist
who sees the whole child
Astro Pediatric Dentistry was born from a simple idea: that a dental practice can feel warm, calm, and even fun — especially for the youngest patients. Dr. Minsuk Cha, a board-certified pediatric dentist, and Dr. Samantha You, a general dentist with a lifelong passion for working with adolescents and teens, joined their strengths to create a practice that grows with every family it serves.
Together, they bring a full spectrum of pediatric care under one roof — from infant frenectomies and first-tooth visits to complex restorative care and treatment for teens. Families in Fairfield don't have to look elsewhere as their children grow. Astro is designed to be their long-term dental home.
I learned to see fear as communication. Once you understand what a child is actually feeling, it becomes much easier to meet them where they are — and help them feel safe."
In the treatment chair, Dr. Cha has a natural ability to meet every child where they are — talking about what they love, listening more than he speaks, and making each visit feel like time spent with someone who genuinely gets them. Parents frequently remark that their children are calmer than expected, even on the very first visit.
Rigorously trained.
Passionately focused on kids.
Doctor of Dental Surgery (DDS)
Touro College of Dental Medicine
Trained under a clinical director known for deep patient empathy, Dr. Cha came to understand early that the quality of the doctor-patient relationship is as important as clinical skill.
Pediatric Dentistry Residency
Stony Brook Hospital
Trained in a Level 1 trauma hospital environment, Dr. Cha developed expertise in dental emergencies across a wide range of complexity — experience that means families are in capable hands in any situation.
American Board of Pediatric Dentistry
Board Certification
Board certification reflects advanced training and evaluation with a strong emphasis on child safety, behavioral guidance, and individualized, developmental care.
Community, family & passion
outside dentistry
Dr. Cha has participated in dental mission trips to rural Mexico since 2015, providing care to communities with limited access to dental services. Those experiences continue to influence how he thinks about service and the privilege of caring for others.
Outside the office, Dr. Cha is an avid drummer and enjoys exploring music engineering. He stays active through swimming and golf, and loves traveling with his family whenever the opportunity arises.
Ready to book your child's first visit?
New patients welcome. We can't wait to meet your little star.