The study of the structure of natural teeth is the foundation of a biomimetic approach to restorative dentistry.
A healthy tooth does not have cracks into dentin.
If a crack into dentin occurs, symptoms are happening.
Why did the composite restoration fail?
The stresses of occlusion eventually were stronger than the bonds connecting the restoration to the dentin and enamel.
This is “the adhesive equation” that I learn from my early mentor @david.alleman.dds @davey_alleman_dmd
This foundation of BRD is the “BioRim”.
This is the cervical 2-3 mm of tooth structure below the height of contour.
This is the critically important part of a functioning health tooth because it is the part of
the tooth that redirects occlusal forces into the whole tooth (Wang Weiner 1998, Magne Belser
2002).
In 1996 Dr J Tim Rainey carefully dissect the dentin from the bottom of the Enamel in the DEJ that we now call the DEC (Bazos Magne 2011). He did this with Air Abrasion ( a very tedious process). What was revealed was a connecting web of enamel under all the pits and groves of molars.
(Rainey 1996, 1998).
These Sub Occlusal Oblique Transverse Ridges hold the tooth together “side to side and front to back”. Traditional GV Black dogma destroys the SOOTs. This destruction reduces the fracture resistance of a normal tooth 40-60% ( Larson Gietsfeld Douglas 1981, Mondelli et al 1984).
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