CDE: [Dr. Rodrigo Neiva presents the Chair’s Lecture Series] Screw vs Cement Retention: How to Increase Implant Success

Sep, 2020
06:00 PM-08:00 PM

Presented virtually via BlueJeans

Time: 6:00-8:00 pm; This virtual lecture will begin promptly at 6:00 pm via BlueJeans.
Registration: FREE to view (does not include continuing education credits); Registration is still required.
Register here»
CE Credits: 2.0 lecture credits
To receive continuing education credits:
Dentist, $50.00
Penn Dental Medicine Alumni, $37.50
Military, $37.50


The definition of success for dental implants has evolved over the years, but the basic tenants remain the same – to ensure long term integration, maintain bone levels and an absence of peri-implant disease. Although most clinicians are aware of risk factors involved in implant failure few deem the restorative technique as a major culprit. Through the years many have debated the pros and cons to screw and cement retained options for dental implant restorations. A wealth of evidence is now mounting that residual cement may play a critical role in peri-implant disease. Cement remnants have been thought to undertake their deleterious effects through a number of mechanisms of action including microbial activity and immune reaction. The possible etiology of restorative driven peri-implant disease and the little knowledge that exists in the dental industry about the type, quantity and the route by which bone loss takes place around implants will be examined. Dr Walton will focus on the importance of screw retention and the appropriate prosthetic planning which must be performed to ensure it can be delivered successfully. We will also discuss alternative options when screw retention does not seem possible including angulated screw channel (ASC) abutments and techniques for reducing excess cement.


  • To understand the differences between screw and cement retention
  • To understand the possible mechanisms of action for excess cements negative impact on implant health
  • To understand the differences between various cements on the markets and their advantages/disadvantages
  • To understand the workflow and pre-prosthetic planning involved to achieve the desired form of retention type
  • Understand alternatives for cement retention in cases with less than ideal angulation


Dr. Phil Walton earned his Doctor of Dental Surgery degree from the University of Toronto. Prior to pursuit of his graduate dental studies, he completed externships at the University of Michigan and overseas at King’s College School of Medicine and Dentistry in London, England. Dr. Walton completed his Master’s degree in Periodontology at the Harvard School of Dental Medicine. His practice includes conventional periodontal therapy for tooth maintenance, periodontal plastics as well as advanced regenerative techniques and implant rehabilitation. His current area of focus lies in immediate implant placement and temporization for both single, multiple and full arch reconstruction. Dr. Walton is a Fellow of the Royal College of Canada and a US Board Certified Diplomate of Periodontics and Implantolgy. He maintains an affiliation to University of Toronto, and Harvard as a clinical instructor, international research fellow, admissions committee member and active alumnus.

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University of Pennsylvania School of Dental Medicine designates this activity for 2.0 continuing education credits.