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Dentists have several ways to improve your smile and bite, either by using dental procedures or dental materials. Tooth post is one of the most common dental materials.
A tooth post is a structure dentists place onto an existing tooth structure to provide the necessary support.
A tooth post is also known as a dental post, screw, fixture, or root canal post.
A dental post is a tiny structure made up of metal and ceramic that dentists insert into an existing tooth that lacks enough supporting tissue.
In addition, this structure helps to secure and stabilize the tooth that has just undergone a root canal treatment.
A post usually appears to be a rod-like structure or screws. Also, the dental post-procedure is a tooth restoration technique that dentists perform as a follow-up to the root canal.
A tooth infection can damage your oral health; sometimes, that damage can go beyond the surfaces, reaching the tooth pulp. Not only this, but issues with tooth filling, genetics, or injuries can also increase your risk for an infected tooth pulp.
In this case, dentists remove the nerves, vessels, and damaged tissue buildup from tooth pulp and clean the site later. This procedure is a root canal. However, it often leaves behind a missing tooth that lacks supporting tissue.
Dentists often replace this missing tooth with a crown or false tooth, but it needs an anchor to hold it into place.
So, dentists replace the tooth roots with screws or rods, also known as tooth posts, that provide adequate support.
Finally, a crown replaces the missing tooth structure after a dental post-implant.
Dental posts can be different based on the materials and their manufacturing.
There are two basic types of dental posts available according to their manufacturing, including:
These dental posts come directly from the manufacturer without any customization. They are super-easy to place and come in standard sizes and different shapes.
Cast posts are usually customized tooth posts and an option when prefabricated posts aren't suitable.
Dental experts use a tooth mold to custom-fabricate the root canal post when most of the tooth tissue is lost. Cast posts come as single or multiple posts based on the individual's requirements.
Posts can be of several types based on the materials used in their manufacturing.
However, each material has unique characteristics and differs in strength, durability, resistance, etc.
Prefabricated posts can be of different types, from dental fiber to metallic posts.
Typically, these posts are made up of the following materials.
ii- Cast Post Materials
Tooth post placement, a.k.a. dental post procedure, is a multiple-step procedure. Furthermore, a dentist may place Tooth Posts with or without a crown.
The step-by-step process with a crown is as follows:
First, the post-implant process begins with a thorough examination via X-rays and site inspection. The area for the implant will lie within the treated root canal.
Once the dentist finds suitable teeth, it's time to clean the site and remove the debris.
Now, the dentist will create the space (post space) in the teeth for the post-placement. Therefore, dentists might use a slow-speed dental drill to make the space.
Dentists also use hand tools to create the space and may refine it later with the help of dental drills.
The next step is the placement of dental posts in the post space. Dentists place the dental posts in the space.
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However, to ensure the best fit, they may trim or refine the post space according to the size and shape of the tooth post.
Once the post is in the right place, the dentist will cement it with cementing material.
This cementing helps to retain the post in its place. After dental cement application, they remove any excessive cementing material.
After the cement sets, now it's time to add the core material. They usually add core material in layers.
Typical core materials are silver filling material or composite resin.
Finally, it's time for crown placement after the post and core are in place. They place a dental crown over the core for better protection and support.
Dentists may place dental posts without a crown, which slightly varies from the above-mentioned process.
Also, this practice is common for the molars because the post-support is sufficient.
You might need a tooth crown if you have just got your root canal. A false tooth or crown covers and protects the root canal, but the remaining tooth structure cannot offer support for the crown.
That's where the tooth post comes in!
A dental post is a minor rod-like structure that a dentist inserts in an existing tooth structure so it can provide support.
Dental posts are available as ready-to-implant posts, or you can customize them in a variety of materials. Moreover, a dentist may perform post-implant work with or without a crown.
Ultimately, your dentist can help you pick the best tooth post to resume your regular tooth function and improve your oral well-being.
A dental post may last up to 10-30 years with an average longevity of 15 years.
The cost is between $3,000 and $6,000. However, the cost of dental post-procedure may vary depending on multiple factors.
A post and crown may fall out due to improper fit or lack of cementing. Furthermore, your dentist will re-cement the tooth post if you visit him quickly.
A tooth post is a rod-like structure placed into an existing tooth structure's root canal to support the crown on it.
In contrast, dental implants are artificial tooth roots placed into the jaw bone through surgery.
Moreover, dental posts are made of metallic or fiber material, while implants are usually biocompatible.
The procedure is not painful because there are no nerves at the implant site. Further, dentists perform it under conscious sedation or with anesthesia so patients only experience mild discomfort.
The slight pain or discomfort can last up to 10 days.
When it comes to post cementation, it's important to choose the right materials. A combination of the right pretreatment, a self-adhesive cement and fiber post that doesn't require pretreatment can help reduce steps and the chance of mistakes, as well as simplify the procedure.
Some clinicians still use adhesive together with cement, but this can cause issues. Adhesive needs to be air dried, which is tricky in a root canal and adds an extra step to your procedure. Plus, adhesive residue, uncured material or remaining propellant can create a risk of voids and interfere with post seating. Plus, the application microbrush is often too thick to go inside the canal, meaning a thinner brush is needed to apply adhesive in a controlled way. Self-adhesive cements like 3M' RelyX' Unicem 2 Self-Adhesive Resin Cement or 3M' RelyX' Universal Resin Cement, on the other hand, have standardized application tips which allow for good void-free distribution from the bottom up.
Before placement, use '5% sodium hypochlorite solution to clean the canal. It's important to rinse the prep with water thoroughly ' do not let the hypochlorite solution remain in the canal, as it could weaken the bond. Use a paper point to remove excess water without overdrying the canal. You want the dentin to remain moist for an optimal bond. After cleaning the treatment surfaces, there are two easy steps to follow for successful post placement.
1. Apply the self-adhesive cement using the provided root canal mixing tip attachments, keeping the tip immersed in the cement at all times as you gradually work your way up from the bottom of the canal to the top (fig. 5). This technique enables void-free application and an optimal bond. If you simply place cement on the post and place it directly into canal, the air in the canal has no way to get out and you can end up with voids. Using an elongation tip, such as those featured with RelyX Unicem 2 Self-Adhesive Resin Cement or RelyX Universal Resin Cement, can help reach the bottom of the canal. RelyX Universal Resin Cement's longer and thinner elongation tip, in particular, offers an easier way to apply cement into the root canal (fig. 6).
Do not overfill the canal ' if you place too much cement, it will overflow when inserting the post and get onto the dentin, which will interfere with adhesive application. Only place enough cement so that you can easily remove excess after the post is inserted. Do not use a lentulo bur, the cement will set too fast.
Figure 5: Application of self-adhesive cement
Figure 6: Side-by-side comparison of the standard elongation tip attachment (left) to the 3M' RelyX' Universal Resin Cement elongation tip (right).
2. Insert the shortened fiber post once ' do not move up and down, it could create voids (fig. 7). Once placed, either tack-cure excess cement and then remove it or remove excess cement with a microbrush and hold post down to light cure. Light cure from the top through the post, according to the cement manufacturer's instructions. Use a good, well-tested curing light with a stable output that to ensure a thorough cure, such as 3M' Elipar' DeepCure-S LED Curing Light.
Always use a dual-cure cement to ensure thorough polymerization, even in areas where the light does not sufficiently reach. Cements like RelyX Universal Resin Cement have a powerful self-cure component, providing additional insurance of adequate polymerization ' no need to worry about potential voids or uncured material as with the application of a separate adhesive in the root canal.
Figure 7: Insertion of shortened fiber post.
From cementation to buildup, make sure carefully time your process ' do not prepare the buildup too early. Wait a minimum of 6 minutes, ideally 10, for the cement to polymerize to avoid disrupting bonding. Don't just place the post and start preparing. Cement, wait 10 minutes, then buildup.
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