Robust Post & Core

RELIABLE AND COST-EFFECTIVE DENTAL OPTIONS

More than 1,000 dentists and orthodontists worldwide count on Robust Dental Law for all of their dental cases. As a full-service lab, there is no dental product we can’t help you with.

When you work with us you get:

  • A quick turnaround, with only 3-6 days for post and cores
  • Confidence in knowing we are insured, ISO-certified, and only use FDA-approved and CE-marked materials
  • Friendly customer service

Call us to learn more about the Robust digital customer portal and how we can serve you and your patients best.

ROBUST’S POST AND CORE SPECS

PRODUCT

Cast, zirconia, and pure titanium post and core

MATERIALS

Non-precious metal: JinYuan/ Audental from China (FDA-approved and CE-marked)

Zirconia: Aidite or Audental from China (FDA-approved and CE-marked)

Full gold (Au40%): Audental from China (FDA-approved and CE-marked)

TURNAROUND

3-6 days

WARRANTY

5 years

POST AND CORE DENTAL OPTIONS

Metal Post & Core

Metal Post and Core

The material for metal post-core includes nickel alloy, cobalt-chromium alloy, and precious alloy. Cobalt chromium alloy is most frequently used because it is less likely to cause an allergic reaction. It is also cost-effective and very tough (not easy to break).

Zirconia Post & Core

Zirconia Post and Core

A zirconia post core is bio-compatible. It often comes with an all-ceramic crown (normally a zirconia crown) due to its natural appearance. However, if the post has to be very small (depending on the specific case), we don’t suggest using a zirconia post and core since it is easy to break.

POST AND CORE FAQs

A dental post-core is a method of restoring a tooth after a root canal treatment. It is used when a natural tooth (usually a molar) has a large carious area (more than 50 percent of the tooth’s original structure should be removed). The remaining tooth is not enough to support a dental crown. In this situation, a post and core crown is helpful to protect the tooth from further damage or infection.

A small rod called a post is inserted in the prepared root canal, while the core fills the decayed area. This post core provides stability and strength to support a dental crown or bridge. A great alternative to post and core treatment is an implant system, but it is quite expensive and time-consuming.

Below are the pros and cons of the post and core programs.

  • Pros: The post-and-core procedure allows you to preserve your teeth, eliminating the need to extract and replace teeth, which can be expensive.
  • Cons: Post and core procedures do not reinforce or strengthen teeth. In some cases, a post and core can stress or weaken your teeth over time.

A post should be at least two-thirds the length of the root canal or equal to the crown height for adequate retention. However, it must not be too wide to avoid root fractures.

Key considerations:

  • Leave 4–5 mm of apical seal to prevent microleakage and root canal failure.

  • The post length alone does not ensure stability—it must extend into solid bone for proper support.

  • Crown-to-root ratio matters when evaluating tooth crown lengthening.

A well-balanced post ensures durability and successful restoration.

Post and cores can be made of non-metallic materials and metals. Let’s focus on the most frequently used materials for now.

Metal post and core

The material for metal post and core includes Nickle alloy, cobalt-chromium alloy, titanium alloy, and precious alloy. Cobalt chromium alloy is the most frequently used for a post core, because it is less likely to cause allergy. It is also cost-effective and very tough (not easy to break). Normally, if an all-ceramic crown is required by dentist, a metal post and core should be treated with opaque, which is to cover the color of metal.

Non-metallic post and core

Non-metallic posts (usually zirconia post and cores) are more aesthetically pleasing than metal posts, because metal posts will glow in all-ceramic restorations. And non-metallic posts are optically closer to the tooth tissue. Non-metallic posts are easier to remove from teeth than metal posts if needed.

However, a non-metallic post and core such as a zirconia post and core is brittle. If the post has to be very small (depending on the specific cases), we don’t suggest using a zirconia post and core, since it is easy to break. Besides, the zirconia post and core cannot be etched, resulting in difficulty in retaining the composite core.

Fiberglass 

Fiberglass post and cores are more brittle than all-ceramic posts, but post and cores with unidirectional fibers are the strongest. However, this material is difficult to produce, because the fiber bundles need to be impregnated and wetted with resin. This process often leaves voids on the fiber surface, resulting in a weakened structure.

Usually not. By definition, post & cores are only placed in end odontically treated teeth (teeth whose nerve tissue has been removed). So, there’s literally no nerve inside your tooth to register pain. Vibrations associated with the procedure (such as those from the dentist’s drill) may be felt, but you will not experience the pain.

Contact Robust Dental Lab