Prevention is the cornerstone of lifelong oral health. At our Bay Area offices, Dr. Helen Thai and Dr. Quincy Tan believe every patient deserves proactive, gentle, and personalized care for their dental health—whether you’re a child, teen, or adult. Our approach blends advanced techniques, clear education, and compassionate service to stop dental problems before they start.
Our preventive services include routine dental cleanings (prophylaxis), professional fluoride treatments, dental sealants, and space maintainers for children. Each dental treatment is carefully tailored to your unique needs.
Routine dental exams and dental treatments are essential for keeping your mouth—and your whole body—healthier. These exams help us spot cavities, gum disease, early signs of oral cancer, bite issues, and other problems before they become painful or expensive to treat. When you trust your smile to us, you receive doctor-led care, advanced diagnostic technology, and a strong focus on education and prevention.
Your dentist or dental hygienist checks for cavities, gum disease, and oral health issues.
Specialized scaling tools remove buildup from teeth and gum lines that home care can’t address.
Professional polish eliminates stains and leaves teeth smooth, making it harder for plaque to return.
Deep cleaning between teeth ensures all stubborn debris is removed, and it's great for preventing cavities.
We help you build an effective daily routine for lasting results.
Prevents tooth decay and cavities, saving you time and money
Reduces the risk and severity of gum disease and its side effects
Improves appearance by removing surface stains
Freshens breath by eliminating bacteria and food particles
Detects early stage problems, allowing for prompt, simple treatment
Supports overall whole-body health by lowering the risk of inflammation and systemic disease
Regular cleanings—usually every six months—are recommended for most patients, but frequency may increase based on your personal risk factors and their oral health problems.
Fluoride is a natural mineral essential for strong, healthy teeth. Our professional fluoride treatments:
Fluoride toothpaste and treatments are safe, quick, and painless, following cleanings or as needed to support lasting oral health. Ask our team how fluoride can be tailored to your needs or your child’s preventive care plan.
Dental sealants are thin, protective coatings applied to the chewing surfaces of back teeth (molars and premolars). Their benefits include:
Sealants are particularly effective for children and teens whose new permanent teeth are most vulnerable—but adults can get them, too. Application is noninvasive, fast, and comfortable. Sealants complement brushing and flossing, not replace them.
Early loss of baby teeth can cause shifting and misalignment of permanent teeth. Space maintainers are custom-made devices fitted to your child’s mouth to:
Space maintainers are recommended when baby teeth are lost due to injury or decay, helping to safeguard your child’s future oral health. Our pediatric specialists ensure fittings are comfortable, effective, and monitored at regular check-ups.
When you visit any of our San Francisco, Vallejo, or Fairfield locations, you’ll be welcomed by a team fluent in Spanish, Tagalog, Hindi, Japanese, and Vietnamese—removing language barriers and supporting your comfort. Every exam, cleaning, and preventive procedure is accompanied by clear explanations and gentle care in our dental offices.
We take pride in customizing care plans for every age and dental history. We are San Francisco’s, Fairfield’s, and Vallejo’s family dentist. Whether you need twice-a-year cleanings, sealant guidance for your children, or extra cavity protection with fluoride, our goal is to help keep your teeth healthy for life.
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Trust Dr. Helen Thai, Dr. Quincy Tan, and our unified Bay Area team for comprehensive, gentle, and modern preventive dentistry. Protecting your teeth, your child’s future smile, and your overall health starts with a single visit—find your new dentist in Fairfield, CA, San Francisco, or Vallejo.
We update this page regularly as we add new treatments and restorative materials to our practice, keeping you informed and empowered.
