Hearing the word "cavity" at a check-up can feel unsettling, but it is one of the most common dental findings, and it is very treatable, especially when it is caught early. This guide walks South Surrey and White Rock families through what happens from the moment decay is spotted to the repair itself, and how to lower the odds of it coming back.
How dentists find cavities
Some cavities are easy to see. Others hide in places a mirror cannot reach, such as between neighbouring teeth. That is why a check-up usually combines a visual exam with low-dose digital X-rays, which can reveal decay between teeth before it causes any symptoms.
Many early cavities cause no pain at all. Sensitivity, a visible dark spot, or food catching in one place can be clues, but a lack of symptoms does not mean a lack of decay. Regular exams are how small problems get found while they are still small.
Your options depend on the stage
Decay moves through four stages, and the right care depends on where yours is.
| Stage | What is happening | Typical approach |
|---|---|---|
| 1. Acid attack | A chalky white spot on the enamel | Monitoring and habit changes, as this stage can sometimes be reversed |
| 2. Hole in the enamel | A small cavity has formed | A filling |
| 3. Into the dentin | Decay spreads faster, and the tooth may feel sensitive | Repair, possibly with a stronger restoration |
| 4. Reaching the nerve | Pain is possible | Root canal care, which can often save the tooth |
What a small cavity repair involves
For a small cavity, the dentist removes the decayed part of the tooth and restores it with a tooth-coloured filling that blends in with your smile. Laser dentistry can also be used to repair small cavities.
If a tooth is weaker, a crown may be recommended. A same-day CEREC crown means the tooth can be supported without waiting between visits. You can read more in the same-day CEREC crowns guide.
If decay has reached the nerve, root canal care can often save the tooth rather than removing it.
Nervous about treatment?
Putting off a visit usually lets decay progress, and that tends to mean more involved care later. If anxiety is what holds you back, tell your dental team. Options exist to help anxious patients feel more at ease, and our sedation dentistry guide explains them.
Keeping the next cavity from forming
A cavity needs plaque bacteria, sugars and starches, and time. You cannot remove all three, but you can shape the pattern:
- Brush twice a day with fluoride toothpaste, which helps rebuild enamel.
- Clean between your teeth once a day, where a brush cannot reach.
- Keep sweets and sweet drinks to mealtimes. How often you have sugar matters more than how much, because each snack or sip starts a new acid attack.
- Drink water between meals to rinse the mouth and support saliva, which repairs enamel between attacks.
- Book regular check-ups and cleanings.
Choosing a dentist for ongoing care
Look for a practice that offers early detection tools, gentle repair options, and a calm approach for the whole family. If you are comparing local options, the main website for Morgan Heights Dental Centre outlines its services, and you can learn how decay develops in more detail in the original post on how a cavity forms.
A cavity is not a failure. It is a signal, and acting on it early keeps your care simple, comfortable, and predictable.