Yeongdeungpo Dental Clinic: Treatment Methods and Material Choices by Stage for Black Spots on Teeth

Hello,

I am Min-young Kim, a specialist in conservative dentistry at a Yeongdeungpo dental clinic.

Many people worry that they may have a cavity when they notice a black spot on a tooth or experience sensitivity.

In particular, many become anxious that the condition might worsen if they delay dental treatment.

Because the appropriate treatment method varies depending on the stage of the cavity, early detection and suitable treatment are important.

1. Symptoms by Stage of Tooth Decay

Tooth decay is broadly divided into four stages.

① Enamel Cavity

This is an early-stage cavity limited to the enamel, the outer surface of the tooth.

To the naked eye, it appears as a white spot or brown mark, and there is usually little to no pain.

At this stage, the tooth surface may only become slightly rough.

② Dentin Cavity

This is a condition in which the decay has passed through the enamel and progressed into the underlying dentin.

Sensitivity begins to appear when drinking cold water or eating sweet foods.

Because dentin is softer than enamel, the cavity can spread quickly.

③ Pulp Cavity

This is a condition in which the decay has reached the pulp, which contains the nerves and blood vessels in the center of the tooth.

Throbbing pain may occur even when you are resting, and the pain often becomes worse at night.

④ Root Cavity

This is a condition in which the pulp has become necrotic and inflammation has progressed to the tip of the root.

Paradoxically, the pain may decrease because the nerve has died, but the gums may swell or discharge pus.

2. Treatment Methods by Stage

Stage 1 Cavity: Fluoride Application or Preventive Resin

For an early cavity, fluoride application alone may induce remineralization.

However, when a clearly defined lesion has formed, preventive resin treatment is performed by minimally removing the affected area and filling it with resin.

At a Yeongdeungpo dental clinic, we believe that stage 1 treatment should focus on preventing progression while minimizing damage to the tooth.

Stage 2 Cavity: Resin or Inlay

For a cavity that has progressed into the dentin, the usual approach is to remove the decayed area and fill it with resin.

Resin is similar in color to natural teeth, offers excellent aesthetics, and can be placed in a single day.

However, when the cavity is extensive or broadly affects the chewing surface, a stronger inlay may be selected.

As explained at the Yeongdeungpo dental clinic, resin is suitable for smaller areas, while inlays are appropriate for larger areas.

Stage 3 Cavity: Crown After Root Canal Treatment

When decay has progressed to the pulp, root canal treatment is necessary.

The infected nerve tissue is removed, the inside is disinfected, and then it is filled with a filling material.

Because a tooth that has undergone root canal treatment becomes weakened due to the loss of its nutrient supply, it must be protected with a crown that covers the entire tooth.

Crowns are available in various materials, including gold, ceramic, and zirconia, and the choice depends on the tooth’s location and the desired level of aesthetics.

Stage 4 Cavity: Extraction or Implant

When the tooth has been severely damaged all the way to the root, it is difficult to preserve the natural tooth.

In this case, function is restored after extraction with an implant or bridge.

From the perspective of a Yeongdeungpo dental clinic, receiving treatment before the cavity progresses to stage 4 is much more advantageous in terms of cost and time.

3. Criteria for Choosing a Treatment Method

The depth and extent of the cavity determine whether resin or a crown should be selected.

When choosing resin

▶ When the cavity has progressed only to the early dentin stage

▶ When the area of tooth damage is small

▶ When same-day treatment is desired

▶ When aesthetics are important, such as in the front teeth

When choosing a crown

▶ When root canal treatment has been performed

▶ When the cavity covers one-third or more of the tooth

▶ When the affected area is subject to strong chewing forces, such as a molar

▶ When the tooth has become weakened overall

The point emphasized at the Yeongdeungpo dental clinic is not simply to fill the cavity, but to achieve a stable long-term result while preserving as much of the remaining tooth structure as possible.

Preserve Your Natural Teeth with the Right Treatment at the Right Time

The earlier a cavity is detected, the simpler the treatment is and the more of the natural tooth can be preserved.

When treatment is received at an early stage, the issue may be resolved with resin alone.

However, if it progresses beyond that point, root canal treatment and a crown may be required, increasing the treatment time and cost.

Detecting cavities early through regular checkups and receiving treatment without delay when symptoms appear is a way to maintain your natural teeth for a long time.

Having a checkup along with scaling once every six months can help detect cavities early.

Because teeth are difficult to restore naturally once damaged,

we hope you protect your valuable natural teeth with the appropriate treatment method at the right time.

Thank you.

This was Min-young Kim, a specialist in conservative dentistry at a Yeongdeungpo dental clinic.