Abfraction causes or NCCL causes The cause of an abfraction, more properly known as non-carious cervical lesion (NCCL),  is debatable.  Abfraction by definition is related to occlusal stress.  Although many use the terms interchangeably, I will use NCCL to describe the lesions except where occlusal stress is believed or reported to be the cause.  NCCLs […]