Be Careful Not to Delay Treatment for Cavities Between Your Teeth

I had been noticing that various parts of my body were no longer the same as they used to be as I got older, but I never expected cavities between my teeth to make me feel this anxious.

Since many of my teeth looked fine from the outside, I thought there was no major problem. However, every time I went to the dentist, I was told that the areas between my teeth were decaying, and I began to feel that they had been quietly deteriorating despite their outward appearance.

When I was young, cavities were easy to notice because they appeared black on the chewing surface or caused sensitivity when I drank cold water.

However, cavities that developed as I got older were often hidden between my teeth and discovered suddenly one day when they had become extensive. Each time, I was startled and wondered why I had only found out then.

At first, even when I was told that I had cavities in several places between my teeth, I did not take it very seriously. They were not visible, and I thought they could simply be filled. However, once I received treatment, I realized that the cavities had spread deeply to the side, so more of the tooth had to be removed than I expected. I experienced firsthand that this was not a problem to dismiss as minor.

Cavities between my molars were especially ambiguous. Food often got stuck there, but I thought that was simply something that happened with age. When my gums bled while using floss, I assumed my gums were weak and avoided flossing. Only later did I realize that the cavities had been progressing inward during that time.

In fact, I thought I was brushing better than expected. I brushed in the morning and evening and even used mouthwash before going out, so I did not think I was particularly poor at caring for my teeth. However, brushing alone had limitations when it came to cavities between the teeth, and I never imagined that not flossing could lead to such a significant problem.

The problem was that even a tooth that had already been treated could weaken again over time. When I found out that a tooth next to a resin filling had decayed again and that a cavity had developed beneath a crown placed long ago, I regretted not realizing how important flossing and regular checkups were.

Cavities between the teeth are difficult to see from the outside, so when they first become noticeable, it is easy to dismiss them as minor discoloration. However, by the time pain appears, the cavity has often already spread deeply inside the tooth. If treatment is delayed, it can progress beyond root canal treatment and even lead to extraction.

Cavities on the chewing surface of a tooth are relatively easy to notice by looking in a mirror or feeling a change with the tongue. However, cavities on the adjacent surfaces where the teeth touch often begin beneath a narrow contact point, making them difficult for patients to check themselves. They may initially begin as a slight weakening of the enamel surface that appears white, but there is usually little to no pain at that stage, making them difficult for patients to detect. If treatment is delayed and the cavity is left untreated, it can progress into the dentin and often be discovered only later.

Cavities between the teeth are dangerous because they are difficult to notice, and by the time they are detected, the internal damage has often already spread extensively. In particular, both teeth on either side of the adjacent surfaces are often affected. If you have a habit of not flossing, conditions inside the mouth may also increase the likelihood of cavities developing on the adjacent surfaces throughout the teeth.

Cavities between the molars can progress more quickly as food repeatedly becomes trapped there. Not only sugary foods, but also sticky carbohydrates such as bread and snacks, can remain between the teeth for a long time and create an environment in which bacteria can easily produce acid. If you experience a brief sensitive feeling when eating something cold or sweet that quickly disappears, the cavity may not have reached the nerve yet. However, if the sensitivity lasts progressively longer or you experience a throbbing pain even when you are doing nothing, it may be necessary to check whether the cavity has progressed close to the nerve.

If treatment for a cavity between the teeth is delayed until the cavity reaches the nerve, simple resin treatment or an inlay may not be enough, and root canal treatment may be necessary. Since the internal tissue is removed and the tooth must be reinforced after root canal treatment, the later treatment begins, the more the amount of natural tooth that can be preserved decreases, potentially shortening the tooth's lifespan significantly.

Another problem is that when a cavity between the teeth has progressed for a long time, it may extend not only through the crown of the tooth but also below the gums. If the boundary of the cavity is close to the jawbone or extends deeply toward the root, there may not be enough healthy tooth structure to support a restoration, and extraction may need to be considered.

To prevent cavities between the teeth, brushing alone is often insufficient. Toothbrush bristles are effective for cleaning the broad surfaces of the teeth, but they cannot fully reach beneath the contact points where the teeth touch. Therefore, floss or an interdental brush should also be used. Floss is suitable when the spaces between the teeth are narrow and the gums are relatively healthy. Rather than simply inserting it up and down and removing it, you should gently press it against the side of each tooth in a wrapping motion and clean down to the area near the gums to achieve a real preventive effect.

The treatment method for cavities between the teeth varies depending on their depth. For an early cavity limited to the enamel, resin treatment may be performed, or its progression may be monitored without immediately removing the tooth structure through fluoride care, dietary adjustments, and regular X-ray examinations. For a cavity that has progressed into the dentin, the damaged area is removed and the tooth is often restored with resin or an inlay. If the shape between the teeth is not properly recreated, debris may become trapped, so precise treatment and careful management of the contact point between the teeth can be important in preventing recurrence.

When a cavity has progressed close to the nerve, the first step is to determine whether the nerve can be preserved as much as possible. However, if spontaneous pain is already present or the inflammation is deep, treatment may require a root canal followed by covering the tooth with a crown.

In conclusion, cavities between the teeth begin small and quietly, but if discovered late, they can significantly weaken the inside of the tooth and progress through root canal treatment and restorative treatment to extraction. Regular checkups, flossing, and a habit of not missing the opportunity for early treatment are ways to preserve natural teeth for longer. In particular, many cases show that tooth longevity can decline rapidly after middle age because of cavities on adjacent surfaces, so I hope you will make a habit of protecting your teeth with regular checkups before they start to hurt.

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