What is a cavity?
A cavity is an area of tooth structure that has been damaged by decay. This happens when bacteria in dental plaque produce acids that break down the minerals in your teeth. Over time, the affected tooth structure can soften and break down, eventually creating a hole in the tooth. That's what we commonly call a cavity.
What causes cavities?
Some of the common causes of cavities are related to your diet. If you have a high sugar intake, that can affect how frequently cavities develop. How often you eat or drink sugary foods and beverages also matters because it affects how frequently your teeth are exposed to acids produced by bacteria.
There are also individual factors involved, including the bacteria in your mouth, saliva, oral hygiene habits, and your susceptibility to decay. When the conditions in your mouth favor bacteria that contribute to tooth decay, cavities are more likely to develop.
What are the signs and symptoms of a cavity?
If you have a cavity, there are some things you might see or feel. For example, you may notice darkening or shadowing on a tooth, or something that just looks different. Sometimes that's simply a stain, but other times it can be decay.
There are also cavities that develop between your teeth, where you may not be able to see them. That's why regular dental examinations and X-rays, when recommended, are important for finding problems that aren't always visible.
As a cavity gets larger, you may experience sensitivity to hot, cold, or sweet foods and drinks. Some cavities can become painful, especially when decay progresses deeper into the tooth and affects the pulp, where the nerves and blood vessels are located.
However, early cavities often don't cause pain. Just because a tooth doesn't hurt doesn't mean there isn't decay, and tooth pain doesn't automatically mean you have a cavity.
How does a cavity progress over time?
Let's talk about how a cavity progresses. If you imagine your tooth almost like an M&M, there's a hard outer shell and a softer layer underneath. Your tooth has a similar structure, with enamel on the outside and dentin underneath it.
Decay often begins in the enamel. Once it progresses into the dentin, it can spread more quickly because dentin is less mineralized than enamel.
There isn't one strict timeline for how quickly a cavity progresses. Some develop slowly, while others progress more rapidly depending on factors such as oral hygiene, diet, saliva, and individual cavity risk.
If decay continues to progress, it can eventually reach the pulp and require more involved treatment.
How are cavities detected?
Early detection is important when it comes to cavities. During your dental examination, we carefully look at the teeth for changes in color, texture, and structure that may indicate decay.
Dental X-rays can also help us identify cavities in areas that are difficult to see during a visual examination, particularly between the teeth.
By identifying decay early, we may have more options for managing it before extensive tooth structure is affected.
What are the warning signs of cavities at home?
Some things you can look out for at home include discoloration, dark spots, or shadowing on your teeth. You may also notice sensitivity when drinking something hot or cold or eating certain foods.
These symptoms don't always mean you have a cavity, but they're reasons to have the area evaluated. And because cavities can develop without noticeable symptoms, regular dental visits are still important even when everything feels fine.
Can cavities go away on their own?
Sometimes patients ask whether an early cavity can go away on its own, especially when it isn't causing pain.
The answer depends on how far the decay has progressed. In the earliest stages, before a physical hole has formed in the tooth, the weakened enamel may be able to remineralize with appropriate preventive care.
That may involve fluoride, changes to your oral hygiene routine, dietary adjustments, or other professional treatments. However, once a cavity has progressed to the point where tooth structure has broken down and a hole has formed, the missing tooth structure won't grow back on its own.
That's why we want to identify decay early and discuss what can be done to prevent it from progressing.
What happens during a dental filling procedure?
When a cavity requires a filling, we'll first evaluate the tooth and determine how much decay needs to be removed. Local anesthetic may be used to numb the area and help keep you comfortable during treatment.
We then remove the decayed tooth structure while preserving as much healthy tooth as appropriate. Once the area is prepared, we place the restorative material.
Today, tooth-colored composite resin is commonly used for fillings. After placing the material, we shape and polish the restoration and check your bite so the tooth can function comfortably.
How can you prevent cavities?
The good news is that there are several things you can do at home to help prevent cavities.
Brushing twice a day with fluoride toothpaste is important, especially before bed. You also want to clean between your teeth regularly because your toothbrush can't adequately reach all of those areas.
Flossing or using another appropriate interdental cleaning aid helps remove plaque between the teeth, where cavities can develop without being easily visible.
Diet is another important factor. Limiting frequent sugary snacks and drinks can reduce how often bacteria produce acids that contribute to tooth decay.
Fluoride also plays an important role because it helps strengthen enamel and supports remineralization of early areas of mineral loss.
What preventive treatments are available for cavities?
Prevention is key when it comes to cavities. During your dental examination, we may perform a caries risk assessment to evaluate your individual risk of developing tooth decay.
We'll talk about your diet, oral hygiene habits, previous cavities, and other factors that may contribute to your risk. From there, we can recommend preventive measures based on your needs.
These may include prescription-strength fluoride toothpaste, professional fluoride treatments, or other products designed to support remineralization of early enamel lesions.
One option that may be considered for certain early, non-cavitated lesions is Curodont, a treatment designed to support enamel remineralization. Whether it's appropriate depends on the condition and stage of the lesion.
The goal is to identify early changes and use appropriate preventive treatments when possible, rather than waiting until a tooth needs a filling.
Want to learn more? Call Affinity Smiles at (847) 780-2114 or email [email protected]. Our team is happy to answer your questions and help schedule your visit.
Ready To Experience The Affinity Smiles Difference?
Schedule your first visit today and discover dental care that combines clinical excellence with genuine compassion. Whether you're seeking preventative care, cosmetic enhancements, or restorative solutions, we're here to help you achieve your healthiest, most confident smile.