Implant Diameter: Does it effect strength?

The subject of implant diameters always brings with it some level of controversy. A recent study investigated the effect of implant diameter on fatigue strength using static and cyclic load test, by comparing four different implant systems, ranging from 2.3 to 4.0. The conclusion:

Implant diameter has an effect on the ability to withstand both static and cyclic loads within Dentium implant systems, The ultimate failure load (UFLs) and fatigue cycles decreased as the implants diameter became smaller.

Read the Full Abstract Here

This, of course, is only one study, but we are curious if anyone has actually measured the failure rate of various implant diameters in their practice? Does the failure rate increase as the diameter of implants decreases?


1. Implant Dent. 2017 Feb;26 Effect of Implant Diameter on Fatigue Strength. Song SY et al.

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2 thoughts on “Implant Diameter: Does it effect strength?

  1. This is an interesting article. I would like to read the full text if that could be posted. I believe that titanium alloy even in small diameter implants can tolerate most occlusal loads delivered by most patients over many years of service with appropriate occlusal schemes. However, the ability of the supporting bond and vegetative intraosseous bacteria are probable more important for implant longevity.
    Dennis Flanagan DDS MSc

    1. I agree with dr.Flanagan’s curiousity. There are some literatures on small diameter implants but many of them are not conclusive. I’d like to know how important the diameter of an implant really is when it comes to long term longevity, not from anecdotal studies but more organized science with more definitive data..

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