Dental Fillings in Gaithersburg & Clarksburg, MD
Dental fillings are a simple, effective way to repair cavities and minor tooth damage while helping prevent further decay. At Tong Dental Care, we use natural-looking materials to restore the strength, function, and appearance of your smile.

Signs You Might Need a Filling
Cavities and small cracks are very common and often simple to treat with a conservative dental filling when caught early. Addressing these minor issues right away preserves your natural tooth and keeps decay from spreading deeper.
Many patients schedule an appointment after noticing subtle changes in their teeth. Common signs that point to a needed restoration include:
- Mild sensitivity to cold, heat, or sweet foods
- Sharp or dull pain when chewing
- A visible dark spot, chip, or rough edge
- Food constantly trapping between specific teeth
Some cavities cause no discomfort at all and are only visible on digital X-rays during a routine exam. If you notice persistent or worsening symptoms, scheduling an evaluation can help you avoid a larger restoration later.
Choosing Mercury-Free Dental Fillings in Gaithersburg, MD
At Tong Dental Care, we offer mercury-free composite dental fillings in Gaithersburg, MD, that restore your teeth safely and naturally. A dental filling repairs structure and function after decay or minor fracturing compromises the enamel. We default to tooth-colored composite resin because it bonds directly to your enamel, allowing our dentists to preserve more of your natural tooth structure.
Our clinical team evaluates several factors when choosing the right material for your smile
- Composite resin matches your natural tooth shade, bonds directly to enamel, and is mercury-free.
- Silver amalgam offers high durability but remains dark and contains mercury.
- Larger areas of decay may require alternative treatments to protect the tooth.
The ideal restorative choice depends on your cavity’s size, location, and bite forces. When damage is cosmetic or minimal, dental bonding can repair the enamel. Teeth with extensive structural loss may require a dental crown to prevent future fractures. Our Gaithersburg team will explain your options during your next exam.


What Happens During a Filling Appointment
Dr. James Tong and our clinical team bring more than three decades of gentle care experience to every restorative visit. We use local anesthesia to keep you completely comfortable throughout the procedure. If you experience dental anxiety, ask our team about conscious sedation options for a relaxed, stress-free appointment.
We use local anesthetic, so you should not feel pain. If dental anxiety is a factor, say so when you book, and we can discuss sedation options, including nitrous oxide, which wears off before you leave.
Our team follows a precise, sequential process to restore your tooth:
- Preparation: We apply topical numbing gel before administering local anesthesia to completely numb the area.
- Decay Removal: We gently clear away the damaged tooth structure and thoroughly clean the cavity.
- Layered Placement: We apply color-matched composite resin in layers and cure each layer with a specialized light.
- Shaping and Polishing: We shape the restoration, check your bite, and polish the composite to a natural shine.
Some mild sensitivity to cold, sweets, or pressure is normal for a few days after treatment. If your bite feels high or uneven when you chew, contact our office for a quick adjustment. Regular cleanings allow us to monitor your fillings, and maintaining strong oral hygiene at home prevents new decay.
Dental Fillings at Both of Our Offices
Tong Dental Care has served Montgomery County as a family-owned practice since 1997. With more than 1,000 patient reviews, our multigenerational team focuses on long-term dental relationships and continuity of care for patients at every stage of life. We are proud to offer two convenient locations for easy scheduling.
Tong Dental Care Gaithersburg, MD
Our Gaithersburg office at 903 Russell Avenue, Suite 200, serves Gaithersburg, Montgomery Village, Kentlands, Quince Orchard, and North Potomac, just off Route 355 with on-site parking. Call (301) 216-1780 or visit our Gaithersburg office page.
Tong Dental Care Clarksburg, MD
Our Clarksburg office at 23206 Brewers Tavern Way serves Clarksburg, Damascus, Hyattstown, Comus, and Germantown, with easy access from I-270. This office was formerly Highlands Dental Care. Same team, same location, now part of Tong Dental Care. Call (301) 515-5100 or visit our Clarksburg office page.
Frequently Asked Questions About Dental Fillings
How much do tooth-colored fillings cost in Gaithersburg, MD?
The cost of tooth-colored fillings in Gaithersburg varies depending on the cavity size, the number of tooth surfaces involved, and the depth of the decay. Deeper decay may require digital X-rays or additional support like a dental crown. We provide a detailed cost estimate after a clinical exam and offer flexible options, including our Dental Smile Club and third-party financing, to keep care affordable.
Does dental insurance cover cavity fillings?
Most dental PPO insurance plans cover a significant portion of basic restorative care, including composite fillings. Your exact out-of-pocket cost depends on your specific provider plan. Our office handles the paperwork and files all claims on your behalf, so bring your insurance information to your appointment.
Are tooth-colored composite fillings painful?
You should not feel pain during a dental filling procedure because we completely numb the tooth and surrounding area with local anesthesia. Most patients notice a sensation of light pressure rather than discomfort while we restore the tooth. For individuals who feel anxious about dental visits, we offer sedation options to make sure your experience is relaxed.
Tooth Sensitivity After a White Filling: What to Expect
Mild sensitivity to hot, cold, or biting pressure is completely normal for a few days after receiving a white filling. We recommend avoiding temperature extremes for a short period while the tooth settles. If your bite feels high or uneven, or if the pain worsens, contact our office for a quick adjustment.
Can you replace old silver amalgam fillings with white fillings?
Yes, we can replace old silver amalgam fillings with tooth-colored composite restorations depending on your goals and the condition of the underlying tooth. We perform an evaluation of your existing metal fillings to determine whether replacement is clinically appropriate. Our team prioritizes conservative, safe techniques for any restorative updates.
How long do composite fillings last?
Composite fillings typically last between five and fifteen years, though their exact lifespan depends on the location of the filling and your daily habits. Heavy biting forces and teeth grinding both affect how long restorations hold up. Regular clinical checkups and proper oral hygiene are key to protecting the borders of your filling from new decay.
How long does a filling take?
A single straightforward filling usually runs 30 to 60 minutes including numbing. Larger cavities or several fillings in one visit take longer. Numbness typically wears off in two to four hours, so plan around eating rather than around getting back to work.
Begin your tong care journey
Begin Your Tong Dental Care Jurney
Tong Dental Care makes getting dental fillings at our Gaithersburg, MD and Clarksburg, MD offices easy. We believe in providing straightforward, comfortable, and covered by most PPO insurance plans. Contact our team today to schedule your evaluation.
