Review of “The Creutsfeldt – Cone technique”

Dental restorations for nearly nothing, prosthesis from overseas, insufficient liberty for the employer and “MacTooth” are only a few of the subjects, we as dental technologists, philosophize about when we get together at conventions, workshops and other gatherings. Many years of research and a very high amount of financial commitment are necessary to integrate new innovative products into the market and to keep the leading edge.

Two ideas of the Polz team are: the origin and the thoughts of development, as well as the correct application which has been discussed in a previous article: “The Cusp Foil and the Cone Dentine”.

Evolution Created a Perfect Tooth

Twelve to fifteen million years ago, the basic model of the morphology of the human tooth developed. The oldest teeth found, which show the morphology of today are around 4 million years old (Australopithecus afarensis). After this morphological test phase, nature has proven, that the positioning of each cusp to one another and to each tooth of the opposing jaw is perfect. Henry Fairfield Osbornes Congruity Theory (1907) states that single cones of teeth with multiple cusps are molten together. This thought was picked up by the authors of the book “Dental Anatomy and Occlusion” Bertram S. Klaus, Ronald B. Jordan and Leonard Adams. An image out of this book shows the main steps of the evolution of the posterior tooth (Fig.1). Originally, the tooth was a simple conus (stage I). Stages II to V show the different stages of tooth development. Here, it becomes evident a multiple cuspid tooth has developed from the original (conus).