Screw Retained Implant Crowns: Purpose and Benefits

Screw Retained Implant Crowns: Purpose and Benefits

October 1, 2022

When getting dental implants and crowns, we are mostly concerned about how long-lasting and reliable they are. However, the lifespan of a dental crown can rely on several biological and material-related factors. Whether to use a screw-retained implant or cement-retained restorations is one of the main decisions your dentist has to make. Both screws retained and cement-retained implant crowns are associated with diverse strengths and weaknesses. When choosing, several factors such as retrievability, location, esthetics, and individual preference are considered. Studies have also shown that the complication rates of both the screw and cement-retained crowns are nearly identical at 3-5%. This means that they both have high success rates. This article discusses more screw-retained implant crowns you will find at an implant clinic near you.

What are Screw-Retained Implant Crowns?

All dental implants near you have similar basic structural features, which consist of a metal post embedded into a jawbone to replace the missing tooth root. An abutment is a metal collar that links the center and the artificial crown. However, implants can vary depending on how the crown is attached to the abutment and the post. The crown can either be cemented to the abutment or screwed to the base through the abutment.

Then what are screw-retained implant crowns? They are crowns jointly connected with their abutments and the implant post using a through – bolt. Screw retained crowns consist of a one-piece feature that makes the implant connection and restoration a single unit.

Recently dentists have been turning to screw-retained crowns to avoid implant-related infections associated with cement-retained crowns.

When are Screw-Retained Implant Crowns Required?

Screw retained implant crowns are usually recommended when replacing the rear teeth. However, the screw-retained crowns may also be recommended for the front teeth in certain cases. Although in such situations, at San Rafael Dentistry, we will jointly consider customized options. Screw retained crowns are also recommended when aiding in the rehabilitation of missing teeth.

Restoration of Screw-Retained Crowns

There are two major procedures required when fitting a crown restoration. The first is taking an accurate impression, and the other is the delivery of a single screw-retained implant crown. These procedures are usually done after a proper healing timeline following the surgical or dental implant procedure.

Taking an impression includes removing the healing abutment from the implant and replacing it with an open or closed tray impression. Next, a radiograph is taken to verify that the impression coping is sitting properly. The impression is then filled, recorded, and sent to the laboratory.

The screw-retained crown is seated into the implant during the restoration delivery process. The dentist also has to ensure that the anti-rotational features of the connection interface are engaged. The titanium screw is then inserted into the screw access hole and is hand tightened using a driver. The screw access hole is then filled with composite or acrylic.

Advantages of Screw-Retained Implant Dental Crowns

With screw-retained crowns, it is easy to facilitate any future repair that may be required. To skilled dental implant experts in San Rafael, it is only a matter of removing the screw and the crown from the abutment. There is also a reduced risk of damage to the implant when repairing or replacing the crown. While those are some of the major advantages of screw-retained crowns, the following are some of its other major benefits.

Retrieval

When removing screw-retainable crowns, no damage can occur to them. Even when the crown loosens or fractures, screw crowns can easily be removed. During regular dental checkups, cleaning, assessing the surrounding tissue, and replacing the screw are also possible. Professional dental experts consider these yearly cleaning and screw replacements prudent.

When recovering a screw crown or changing them for maintenance, the restoration and the cotton pellet are removed, and the screw is examined. Once the needed alteration is made, the screw will be torqued, and a new cotton pellet will be placed. A composite is then used to seal the opening.

The capacity to address any damage without having to remake the restoration is why screw-retained crowns are so popular.

No Cement is Used

Screw implant crowns do not use cement to anchor them with the abutment. Because of this, screw-retained crowns are exempted from complications due to poor cement cleanup. Overall, screw-retained implant crowns have been found to have low technical and biological issues compared to cement-retained crowns. This is because screw-retained crowns eliminate the risk of the problems that arise when excess residual cement is present in cement-retained crowns. Leftover cement provides a favorable environment for the bacteria to thrive. These bacteria eventually lead to infections that cause implant failure.