
where your child can feel at home
Established in 1973, we are a family-oriented office that prides ourselves on providing the best children’s dental care in a fun and comforting environment. With a focus on gentle and positive experiences, we set each child on the path to a lifetime of healthy, happy smiles!
Meet Dr. Helen Mo
Board Certified Pediatric Dentist
Hi! I’m originally from Georgia, but made the big move to the West Coast for residency to join my husband, who I met in dental school. I became a pediatric dentist simply because I LOVE kids! It is a privilege and an honor to serve such a precious group of individuals. My mission is to treat every child who steps into our office with the same compassion and quality of care that I would for my own family. Pediatric Dentistry of Pleasant Hill is a family-run business, operated by my husband Allan and me.
Outside of being a pediatric dentist, I am a mother of two, Olivia and Cameron. We love to explore the Bay Area together! I look forward to getting to know your family as we navigate the journey of parenthood together.

A Letter from Dr. Helen
Dear Our Families,
We express our condolences with the passing of our dearest Dr. Amybeth Harmon. We understand that this is a difficult time for you and your child.
Amybeth was my first employer and one of my first mentors. I always admired her positive energy, her big heart, and her endless generosity with her patients, family, and community. It is an honor that the Harmon family has entrusted me and my husband to continue their legacy. I hope that with time, the both of us can build similar relationships with your family and our surrounding communities.
Though your child may be seeing a different dentist, all of our wonderful staff members will be familiar faces greeting you. Dr. Jennifer and Dr. Joanna are also both available for appointments. Our team promises to honor Amybeth by continuing to treat our patients like family, in a welcoming environment, with the highest level of quality care -- just like she did. We want every child to feel comfortable during their appointment.
If your child would like to meet me prior to their appointment, you can schedule a “fun visit” just to swing by the office and say “hi!” If you have any specific concerns, I would also be happy to chat over the phone at your convenience. I am here for your family as we make this transition together. My goal is for your child to continue creating positive memories in our office.
If you have any other concerns, please don’t hesitate to call our office.
We are here to support you in whatever way you need.
With love, Dr. Helen

Our Services
Celebrating 50 years of Happy Patients



My son was apprehensive to go to the dentist, but he loved Dr. Jennifer and her calming manner. She ‘counted’ his teeth and guess what? No cavities! The goodie bag with a toothbrush, floss and paste, balloon and toy made him smile and now he looks forward to going back.

I am so thankful for the wonderful treatment my two children have received over the past ten years. The staff are always kind, down to earth, and most importantly have put my ten-year-old and four-year-olds interests first. Through great guidance, my children have healthy mouths, healthy mindsets about how to care for themselves, and actually think it’s an okay thing to go to the dentist. I am a true believer that you get what you pay for.

The administrative staff, dental assistants, and dentists are patient, take time to explain procedures and treatment options. Our daughter always loves the balloon! Dr. Jay was great, causing our four-year-old daughter to laugh and giggle, which is a great improvement over her prior nervousness.
Contact Us
Opening Hours
Mon - Thurs
Friday
Saturday
8:00 am – 4:30 pm
7:30 am – 3:30 pm
7:30 am - 2:30 pm