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How Much Does It Cost to Fill a Large Cavity? Can a Large Dental Cavity Be Filled?

Nguyen Thi Bich Ngoc
Nguyen Thi Bich Ngoc
Asked: 29/08/2026

I have a molar that has been decayed for a long time, so the cavity is now quite large, clearly visible, and food often gets stuck in it, causing discomfort. I do not know whether my case can still be treated with a filling or whether I am required to undergo another method such as a dental crown. If it can still be filled, will the cost be higher than that of a regular dental filling? I am also worried that a large cavity may not hold a filling well and that the filling may easily become dislodged again.

Hello, regarding your question about how much it costs to fill a large cavity and whether a large dental cavity can be filled, the doctor will explain in detail so that you can clearly understand the situation before deciding on treatment.

Can a large dental cavity be filled?

The doctor answers as follows: a large dental cavity can still be filled, but this is only applicable when the remaining tooth structure is sufficiently strong and the pulp has not developed severe inflammation.

From a professional perspective, dental filling is a method of restoring lost tooth structure using artificial materials, helping reconstruct the tooth’s form and chewing function. However, for large cavities, the doctor must carefully assess 3 important factors, including: the depth of the lesion, the extent of tooth structure destruction, and the condition of the pulp inside.

If the cavity is large but has not invaded the pulp, or if root canal treatment has already been completed and the tooth is stable, the doctor can still perform a filling using an appropriate technique to preserve the natural tooth. Conversely, if too much of the tooth has fractured, the tooth walls are thin and weak, or there is a high risk of fracture, a simple filling will not ensure long-term durability. In such cases, the doctor will usually recommend a dental crown to provide better protection for the tooth.

Therefore, a large cavity does not necessarily mean that the tooth cannot be filled; each case needs to be specifically evaluated to select the optimal treatment option.

How much does it cost to fill a large cavity?

The cost of filling a large dental cavity is not fixed and depends on many factors, such as the extent of the damage and the type of material used. For cases involving large cavities, the cost is generally higher than that of a conventional filling because the technique is more complex and requires more treatment time.

Filling cost based on the severity of tooth decay

If the tooth has extensive decay but the pulp has not been affected, the cost will be at an average level. If the decay is close to the pulp or root canal treatment is required before filling, the total cost will increase significantly because multiple treatment steps are involved.

In addition, large cavities in molars often require more complex restorative techniques to ensure adequate chewing forces, so the cost also tends to be higher than for anterior teeth.

Cost based on materials (Composite, GIC, ceramic…)

Filling materials play a very important role in durability and aesthetics. Composite is a popular choice because of its natural color, relatively good durability, and reasonable price. GIC is commonly used for children or in areas of the teeth that are not subjected to heavy forces.

In some cases where the cavity is too large, the doctor may recommend restoration with a ceramic inlay/onlay instead of direct filling. In such cases, the cost will be higher, but in return, the durability and load-bearing capacity are superior.

Therefore, to know exactly how much it costs to fill a large dental cavity, you need to undergo a direct examination so that the doctor can assess your specific condition.

Factors affecting the cost of dental fillings

  • The cost depends not only on the size of the cavity but also on the dentist’s skill, the technology used, and the quality of the filling material.
  • If the doctor performs the procedure correctly, thoroughly removes the decayed tissue, and properly shapes the filling according to the occlusion, the filling will have high durability, reducing the risk of dislodgement and the need for retreatment.
  • Conversely, if the procedure is performed inaccurately or the bacteria are not completely removed, the filling may easily develop marginal gaps, become dislodged, and cause recurrent decay, resulting in additional costs.
  • Modern equipment helps improve accuracy during the filling procedure, shorten treatment time, and enhance long-term effectiveness.
  • Genuine filling materials with clear origins generally cost more but provide better safety, aesthetics, and filling longevity.
  • If you combine additional oral care services such as dental scaling or teeth whitening at Gangwhoo Cosmetic Hospital, the total cost will vary depending on your actual needs.

Dental Filling Price List at Gangwhoo Cosmetic Hospital

At Gangwhoo Cosmetic Hospital, dental filling costs are established transparently and are appropriate for each specific condition.

ServiceSERVICE PRICE
DENTAL FILLINGAesthetic filling440,000 – 880,000
Fuji filling330,000
Primary tooth filling110,000 – 220,000

In addition to dental fillings, Gangwhoo also provides dental care and aesthetic services such as advanced teeth whitening technology, helping improve tooth color after treatment and providing a more confident smile.

Should a large cavity be filled or restored with a dental crown?

For cases involving a large dental cavity, the choice between a filling and a dental crown depends on the actual extent of the damage. If the tooth still has sufficient hard tissue and good load-bearing capacity, a dental filling is the optimal conservative solution, helping preserve the natural tooth and save costs.

However, when the cavity is too large, the tooth walls are thin and weak, or the tooth has undergone root canal treatment, a dental crown will be a safer option. The ceramic crown covers the entire tooth crown, helping increase durability, minimize cracking and fracture, and ensure long-term chewing function.

The doctor always prioritizes maximum preservation of the natural tooth, but in some cases, choosing the appropriate restorative method from the outset will help you avoid complications later.

If you are concerned about your dental condition or are still unsure how much it costs to fill a large dental cavity, you should visit Gangwhoo Cosmetic Hospital directly for a detailed examination. The doctor will accurately assess the extent of the damage and advise you on an appropriate solution, ensuring both safety and optimal cost-effectiveness.


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