1. What is the dental overlay?

A dental overlay is an extraordinary form of dental restoration in which it is not a full crown but more than a dental filling. The dental overlay covers ¾ of the tooth, including the entire cusp portions. Because the coverage of dental overlay is almost the entire tooth area, many people think that the overlay is similar to the crown. However, in terms of structurally, the overlay does not cover 100% of the tooth area like a full crown

Dental Overlay
Dental Overlay

2. The purpose of the dental overlay?

The primary purpose of the dental overlay is to preserve as much of the patient’s remaining natural teeth. Although the remaining natural tooth is only 1/3, it is still better than completely replacing it with the entire crown.

3. The function of the dental overlay?

When the tooth surface is worn or broken with a large area, the dentist will use an overlay to cover the damaged tooth to help restore the tooth’s shape. Although part of the overlay goes inside the tooth, it does more to recover the outer appearance, which is considered the primary function of the overlay.

4. How to make the dental overlay?

Like manufacturing a crown, the material for making dental overlays today is Zirconia or Emax. Unlike the dental filling is applied directly on the patient’s tooth, the overlay will be manufactured in the modern lab with CAD/CAM technology and milling machines to create a basic shape. After that, the dental technician will grind, polish, and stain the overlay like a dental crown

5. The advantages of the dental overlay

The benefit of the overlay is that it helps preserve the maximum enamel during the treatment. Therefore, when the tooth is worn or broken with a large area, but the internal tooth structure is still in good condition, the dentist will rather recommend an overlay 

However, when faced with a case of a broken tooth with a large area, most people or dentists hurry to proceed with replacing a whole crown. The replacement of an entire crown, in this case, means that the healthy part of the tooth will have to undergo a grinding action to become smaller to fit the new crown. Therefore, you need to choose wisely to protect your natural crowns.

Therefore, when deciding to replace a new tooth, you need to understand the health of your teeth and the condition of your teeth, should think about the following questions:

– Your teeth only wear down naturally over time, without tooth decay or tooth diseases -> It will be better to think of an overlay rather than an entire dental crown.

– Your tooth is broken in a large area, but the rest of the teeth are still in good condition, without any dental disease -> let’s think of an overlay rather than a complete dental crown.

Overlay in patient’s mouth

6. The differences between the dental overlay and the dental filling?

– Dental filling is done directly by the dentist on the patient’s teeth, while the overlay is produced in the lab using Cad/Cam technology.

– The durability of the overlay is better than the dental filling as the position of filling may fail out after a time of using 

– Dental filling is used in the treatment of small and medium cavities, while an overlay is mainly used for worn or broken teeth in a large area.

– The cost of overlay is higher than a dental filling

7. Overlays produced at outsourcing dental lab ?

The overlay manufacturing process is similar to the complete crown production process. Depending on the needs, customers choose materials as Emax or Zirco, then we will use CAD/CAM technology to design and complete the overlay teeth. If you are looking for an outsourcing dental lab to produce overlay teeth, let’s contact us via:




Author: Xdent team

Leave a comment