What is the Reverse Margin™ Design?

The Reverse Margin™ is a design feature that describes the shape of the margin built into a custom abutment and its complimentary prosthesis. It affects the direction of flow of cement during the process of intra-oral cementation. The Reverse Margin™ redirects the flow of cement away from, rather than into the tissues that surround dental implants. This margin design can be used as part of the Cement Control System™ proposed by Emil L.A. Svoboda PhD, DDS, to prevent or reduce the occurrence peri-implant disease.

What is the Cement Control System™?

It is a term used to describe a combination elements that can be used to help reduce the incidence peri-implant disease and early failure of dental implants. Study the Short Award Winning Slide Presentation to understand more

For those who like to use “Retrievable Prosthetics” and also wish to reduce their treatment complications, consider using the “Simplified Svoboda Modification” as your favorite implant prosthesis installation technique. Read more about it here.

Video Citation
Video 1 Citation

Reverse MarginTM, Protecting Your Foundation. Svoboda Emil L.A., Animation Video, Published to www.ReverseMargin.com, May 6, 2015
Video Citation

Video 2 Citation

Reverse MarginTM, Margin Design is Important, Svoboda Emil L.A.,Video, Published to www.ReverseMargin.com, May 6, 2015

Why use the Reverse Margin™ Design

Reduce Infection

The Reverse Margin design helps control excess cement and intra-oral cementation improves the passive fit of implant components. Safer intraoral cementation is expected to reduce peri-implant disease related to residual excess cement and open implant-abutment connections. Give oral pathogens less places to grow.

Increase Patient Satisfaction

Choosing the Reverse Margin design helps you (the dentist) get better results that minimize or eliminate some of the risk factors that are known to cause failure of implant treatment. Your patients will be happier if their treatment lasts longer!

Increase Success Rate

Residual excess cement and open implant-abutment connections are two major risk factors known to contribute to the failure of dental implants and their attached teeth. The reduction or elimination of these contributing factors are likely to decrease failure rates. Choose the Reverse Margin design to make treatment better for your patients.

Decrease Liability

It does not bode well for the dentist when residual cement is detected in the peri-implant complex of a failing dental implant. Indeed, any failure is very expensive; maintenance of ailing-failing implants, removal of failed implants and attached prosthetics, paperwork and legal fees. Everything is expensive. Choose the Reverse Margin design to improve your results.


Read Dr Emil L.A. Svoboda’s Editorial About

J. Derks et al., Effectiveness of Implant Therapy Analyzed in a Swedish Population: Prevalence of Peri-implantitis. JDR January 1, 2016 95: 43-49.


Download PDF of Editorial

Latest Video Publications

Video Citation
Preventing Cement Voids for Safer Prosthesis Cementation | Svoboda E. L.A., Video, September 24, 2016.
Video Citation
Intra-oral Prosthesis Cementation Using Super Low Forces | Svoboda E. L.A., Video, September 13, 2015.

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