How much has really changed in 100 years in clinical practice? This video shows root canal treatment from 1917…as you can see rubber dam was used, as was sodium hypochlorite, Gutta Percha and the recognition that the canal system needed sealing. The bare bones of what we do today is astonishingly very similar to this video. What really drives change ? Ideally a combination of technology and research coupled with the collective experience of clinicians but that may not always be the case. Think about this video the next time a newfangled technique, material or ethos gets pushed your way.