Dental experts say not every cavity requires an immediate filling and rushing into one could actually cost you more in the long run. Close to 90 percent of American adults between the ages of 20 and 64 have experienced some form of tooth decay, according to federal data from the National Institute of Dental and Craniofacial Research. Left untreated, cavities can lead to serious health consequences, including infection and an elevated risk of heart disease.

Why millions of Americans rush into fillings they may not need. When a cavity is found, most people assume the next step is straightforward, get the filling, move on. But dental experts say the reality is far more nuanced and patients who go in without knowing the full picture could end up with more procedures, more discomfort and a bigger bill than necessary. Here are things to know before agreeing to a dental filling.

4 smart things to do before you agree to a dental filling

Not every cavity needs to be filled right away

One of the most important things patients can learn is that smaller cavities don’t always require immediate treatment. Some dentists advocate for a watch and wait approach, where they monitor the decay over time before intervening surgically. This method can spare patients from unnecessary procedures when the cavity is caught early enough.

Dentistry is a business  and fillings cost more than checkups

Surgical dental procedures generate significantly more revenue than routine cleanings or X-rays. A standard filling can run more than $200 even with insurance, while a crown used to restore more severely decayed teeth can cost upward of $2,000. Experts note that the financial incentive to drill is real, even if not every dentist acts on it. Patients are encouraged to ask questions and, in some cases, seek a second opinion before agreeing to treatment.

You may be able to reverse early decay

If the tooth decay has not yet penetrated through the enamel to the inner layers of the tooth, there’s still a chance to stop it without drilling. Dentists may simply recommend more consistent brushing, improved flossing habits or fluoride treatments. Catching decay at this stage is the best case scenario for both the patient’s wallet and overall tooth health.

Large fillings carry their own risks

It’s not just untreated cavities that can cause problems. Large or aging fillings can increase the risk of tooth fractures over time, which may lead to even more procedures down the line. This is one reason some dental professionals prefer to wait on smaller cavities rather than jump to filling them, particularly when the risk of natural reversal remains.

Waiting too long has real consequences

While patience can be a virtue with early stage cavities, delaying treatment for a cavity that genuinely needs attention is a different matter entirely. Putting off a necessary filling for as little as six months can lead to difficulty chewing, significant pain and a compromised tooth structure. If decay reaches the soft living tissue inside the tooth known as the pulp a root canal becomes necessary, which is a far more invasive and expensive procedure. In the most severe cases, the tooth may be lost entirely, affecting a person’s ability to eat and altering the appearance of the face.

The bottom line

The decision of whether to fill a cavity and when is one best made in close conversation with a trusted dentist. Patients should feel empowered to ask whether monitoring is an option, understand the full cost of recommended procedures and consider a second opinion when in doubt. When it comes to dental health, being informed before sitting in that chair can make all the difference.