A sudden twinge of pain when you eat something sweet, or a new sensitivity to cold drinks—these small moments of discomfort are often the first whispers of a developing cavity. While it’s tempting to ignore them, understanding these early signs is key to catching the problem while it’s small and simple to fix, often with just a simple filling. Recognizing these symptoms is a core part of your dental care in Bali.

The Classic Telltale Sign: Pain and Sensitivity
For many, the first sign of a cavity is a new or unusual sensation. The type of discomfort can tell you a lot about the potential problem.
- Sensitivity to Sweets, Hot, or Cold: This is the most classic symptom. When tooth decay erodes the protective outer enamel, it exposes the sensitive layer beneath called dentin. This layer contains microscopic tubules that lead to the tooth’s nerve, causing a sharp, sudden pain when triggered by temperature or sugar.
- Pain When Biting Down: If you feel pain when you chew or apply pressure, it could indicate a cavity on the chewing surface of one of your molars.
- Spontaneous, Lingering Toothache: A toothache that starts on its own without a clear trigger, throbs, and lasts for a long time is a more serious sign. This often means the decay has progressed deep enough to irritate or infect the tooth’s nerve (pulp).
The Visual Clues: What to Look For
Sometimes, a cavity gives visual warnings before you feel any pain. When you brush your teeth, take a moment to look for these signs:
- Visible Holes or Pits: The most obvious sign is a literal hole or pit in your tooth. These can be small at first but will grow over time.
- Dark Spots or Stains: A new black, brown, or dark spot on any surface of your tooth is a major red flag for decay, and it’s crucial to determine if it is just a stain or an actual cavity.
- Painful Gums: If a cavity forms near the gumline, it can trap plaque and bacteria, causing the surrounding gums to become red, swollen, and painful—a sign of gingivitis.
Other Surprising Symptoms
Some symptoms of a cavity are less direct but just as important to recognize:
- Persistent Bad Breath or a Bad Taste: A cavity is a hole where bacteria and food particles can get trapped and decay, which can produce foul-smelling gases.
- Food Getting Trapped: If you consistently notice food getting stuck in the same spot between your teeth every time you eat, it might be a sign that a cavity has formed, creating a small pocket.

What if There Are No Symptoms at All?
This is one of the most important things to understand about tooth decay: in its earliest stages, it is often completely painless. According to health authorities like the U.S. Centers for Disease Control and Prevention (CDC), tooth decay can begin long before you feel any discomfort. This is why you shouldn’t wait for pain to be your only signal to see a dentist.
Conclusion
Every symptom, no matter how small or infrequent, is your body’s way of telling you that something is wrong. Ignoring these early signs allows a small, easily treatable problem to grow into a larger, more complex, and more expensive issue. The most important step you can take is to listen to your body and get a professional diagnosis from our dental team. At Unicare Clinic, we can help you address the issue early.
DON’T WAIT FOR THE PAIN TO GET WORSE
If any of these symptoms sound familiar, the best thing you can do is get a professional diagnosis. An early check-up can mean the difference between a minor treatment and a more complex procedure down the road.
For an appointment or to ask further questions, our 24/7 hotline is your best first contact:
Call / WhatsApp: +62 822-9229-8911
Frequently Asked Questions (FAQ)
Can a cavity go away on its own?
No. Once the enamel has been breached and a cavity has formed, it cannot heal itself. It will only get larger over time without dental treatment.
My tooth only hurts sometimes. Do I still need to see a dentist?
Yes. Pain that comes and goes is a classic sign of an early- to moderate-sized cavity. It’s crucial to treat it now before the pain becomes constant.
Is a dark spot on my tooth always a cavity?
Not always; it can sometimes be just a harmless stain. However, it is a very common sign of decay, and the only way to know for sure is to have it examined by a dentist.
How does a dentist know for sure if I have a cavity?
They use a combination of a visual examination with a dental explorer (a sharp instrument) to check for soft spots, and dental x-rays to see decay between teeth or under a filling.
Why do cavities cause bad breath?
A cavity is essentially a hole where food and bacteria get trapped and multiply. The bacterial activity and food decay can produce foul-smelling gases.
Can a cavity form under an existing filling or crown?
Yes, this is called recurrent decay. It can happen if the edge of a filling or crown is no longer perfectly sealed, allowing bacteria to get underneath.
Does a cavity always require a drill to fix?
If caught in the absolute earliest stage of demineralization (before a hole forms), it can sometimes be reversed with fluoride treatment. However, once a physical cavity has formed, the decayed part of the tooth must be removed, which usually involves a drill.
I don’t eat a lot of candy. How did I get a cavity?
Cavities are caused by acids produced from carbohydrates, not just candy. Foods like bread, crackers, chips, and even fruit can contribute, especially if oral hygiene is not optimal.
What’s the difference between tooth decay and a cavity?
Tooth decay (dental caries) is the process of demineralization caused by acids. A cavity is the result of that process—the actual hole or damage in the tooth structure.
If a cavity doesn’t hurt, why should I fix it?
Treating a small, painless cavity is a very simple and inexpensive procedure (a small filling). If you wait until it hurts, it means the decay has reached the nerve, which will require a much more complex and expensive treatment like a root canal.