Exocad - Screw-Retained Implant Crown

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Quick guide to design a Screw-Retained Implant Crown.

Screw-retained or cement-retained?
Which one to choose when making clinical decision?

Both fixed dental restorations have pros and cons. Which one to choose depends on some factors such as retention, retrievability and esthetics.
Cementation is the most commonly used restoration in dental implantology. Advantages include the compensation of improperly inclined implants, easier achievement of passive fit due to the cement layer between the abutment and reconstruction, lack of a screw access hole, and thus the presence of an intact occlusal table and easier control of occlusion. The major disadvantage is the difficulty of removing excess cement, which has been associated with the development of peri-implant mucositis and peri-implantitis.
Screw-retained restorations on the other hand have the advantage of more predictable retrievability. They require a minimal amount of interocclusal space and are easier to remove when hygiene maintenance, repairs or surgical interventions are required. Additionally, angulated screw channel solutions have made screw-retained restorations available for a wide range of indications.
(Source: nobelbiocare.com)