Prevention is always better than repair. That’s why at Smiles Dental Spa, Dr. Shirley Zhao is committed to helping Tracy residents of all ages achieve the healthiest smiles possible—starting with expertly delivered preventive dental checkups, teeth cleanings, and dental exams. Our approach is friendly, meticulous, and focused on saving you time and money by addressing dental issues before they start.
Your Trusted Tracy Dentist
Since 2013
A little prevention goes a long way—keep your smile healthy, radiant, and pain-free with gentle, proactive dental care.
Preventive dentistry is proactive dental care that keeps teeth and gums healthy, aiming to prevent dental problems such as cavities, gum disease, and costly dental emergencies. Instead of waiting for issues to develop, our team uses state-of-the-art techniques, gentle cleanings, and patient education to help you maintain a radiant, pain-free smile. The benefits of preventive dentistry make it one of the smartest—and most affordable—ways to safeguard your oral health for years to come.
Even with excellent brushing and flossing at home, plaque, tartar, and trapped food particles can build up in hard-to-reach places, leading to oral health issues. Our thorough professional dental cleanings gently remove debris and bacteria, keeping your teeth sparkling and your gums healthy.
These cleanings significantly reduce the risk of gum disease and freshen your breath. We recommend scheduling a cleaning every six months to catch potential oral health issues early and keep your mouth in top shape.



Fluoride is a naturally occurring mineral that strengthens tooth enamel, making it harder for acids to cause cavities. At Smiles Dental Spa, we offer safe, effective fluoride treatments for kids and adults—especially if you’re prone to decay, have sensitive teeth, or simply want maximum cavity protection as part of your routine dental care.
In just a few painless minutes, Dr. Zhao applies a concentrated fluoride solution to brush your teeth, shielding and remineralizing enamel, helping prevent cavities, and rebuilding areas of early decay. Regular fluoride treatments are an easy way to boost your family’s defense against tooth decay and keep everyone smiling with confidence.
Some teeth, especially back molars, have deep grooves that trap food and bacteria—making them much more likely to develop cavities, particularly in children. This is where professional dental treatments, such as sealants provided by your family dentist, play a crucial role.
Sealants are ultra-thin, clear coatings painted onto the chewing surfaces of molars. They quickly harden to form a protective barrier, blocking germs and food from getting stuck in those hard-to-clean spots. With proper care, sealants can help prevent about 80% of cavities in the molars for several years. Sealants are quick, comfortable, and well-suited for children, teens, and adults prone to cavities.
Losing a baby tooth too early—whether from injury or decay—can cause neighboring teeth to shift and block the path for permanent teeth coming in. That’s where space maintainers play a crucial role. These small, custom-fitted devices hold the empty space left by a lost tooth, ensuring adult teeth have room to erupt in the right position.
By preserving tooth alignment, space maintainers help prevent crowding, the need for future orthodontic work, and potential issues linked to heart disease. If your child loses a primary tooth prematurely, our team at Smiles Dental Spa will explain your options and fit a space maintainer if needed, so your child’s smile grows in beautifully and comfortably.
As your trusted Tracy dentist, our compassionate team creates a welcoming environment where routine visits are easy, comfortable, and even fun for children. We want every visit to feel like a positive step for your well-being—never something to fear or avoid.





Scheduling is easy—book your visit online anytime using NexHealth or call us at (209) 585-1475.





Our commitment is simple: provide the highest quality dental care in Tracy, helping you maintain optimal oral health with a focus on prevention, comfort, and lasting results.

Led by Dr. Shirley Zhao, serving Tracy and nearby communities

Digital X-rays, child-friendly techniques, minimally invasive procedures

Caring for kids, teens, and adults at every stage of life

Appointments online or by phone

1431 N Tracy Blvd, Tracy, CA 95376
We thrive on patient feedback! See what your neighbors in Tracy have to say about their experience, and if you have a moment, please leave us a review—we appreciate you taking the time!
Protect your smile for a lifetime. At Smiles Dental Spa, we’re here to protect, educate, and support you on the journey to brighter, healthier teeth—at every age.
Begin your journey toward a healthier smile today. Book your preventive dentistry appointment in Tracy, CA, online with NexHealth, or call (209) 585-1475 today!
Smiles Dental Spa—trusted preventive dental care for Tracy families.


1431 N Tracy Blvd
Tracy, CA 95376