Abfraction: Concepts Revisited

Aman Chowdhry, Ankita Tandon, Vivek Mehta, Gayatri Ramesh


Abfractions are angular, wedge shaped defects present at cervical part of teeth. These are caused by mechanical overloading initiated by cuspal flexure. Clinically, present as notches in the tooth structure near or even under gum line usually on the cheek side of tooth. Up until now, research into the causes of abfractions seems to be divided into two camps- some researchers argue for tooth brushes and other artificial forces as the cause while some also point out the internal physiological sources as the culprit. The latter argument, though not providing a complete explanation, does offer a significant clue to the real cause of this troubling phenomenon. This article therefore deals with current facts and myths about abfraction.


Abfraction; Force; Flexure; Microcracks; Hypersensitivity

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