What does “Screw-retained versus cement-retained prosthesis” mean?
Screw retention and cement retention are two ways of fixing an implant prosthesis: securing it with a screw or bonding it to an abutment with dental cement.
Retrievability and prosthesis shape
A screw-retained prosthesis can be released through its access hole, which may help retrieval and repair. Hole position and prosthetic material thickness must be considered. Cement retention allows a form without an access hole, but removal can damage the prosthesis.
Checks specific to each retention method
Screw-retained designs require checks for loosening, fracture, and the material sealing the access hole. Cement-retained designs require particular attention to identifying and removing excess cement below the gum. Fit, bite, and cleanability matter for both.
One method is not always superior
Implant direction and depth, prosthetic space, gum margins, and future repair access are considered together. Some designs combine cement and screws, so the name alone may not reveal the actual structure. Confirm the reason for the chosen method and the specific maintenance approach.
Frequently Asked Questions
Does screw retention prevent gum inflammation?
It avoids excess-cement problems, but inflammation related to plaque and maintenance can still occur. Cleaning and examination of surrounding tissues remain necessary.
Is it impossible to repair a cement-retained prosthesis?
Repairability depends on prosthesis shape, the cement bond, and problem location. Removal can cause damage or require remaking it, so retrievability is considered during design.
Questions about screw versus cement retention
Learn what the term means and how it relates to your dental condition.
- Sufficient understanding
Why was this retention method selected?
Explanation and evidenceConsider implant direction, access-hole position, and prosthesis retrievability together.
Association of Dental Implantology · Prosthetic Treatment - A choice suited to your condition
What needs checking during maintenance?
Explanation and evidenceDistinguish method-specific issues such as screw loosening and excess cement while checking fit and cleanliness in both.
Association of Dental Implantology · Preload
