Abrasion vs. Abfraction

Abrasionnoun

The act of abrading, wearing, or rubbing off; the wearing away by friction.

Abfractionnoun

(dentistry) A proposed mechanism for noncarious tooth tissue loss, owing not to decay but rather to biomechanical stresses of biting and chewing; the pathogenesis of such damage remains a subject of continuing study.

Abrasionnoun

(obsolete) The substance thus rubbed off; debris.

Abfractionnoun

An instance of tooth tissue loss via this mechanism.

Abrasionnoun

(geology) The effect of mechanical erosion of rock, especially a river bed, by rock fragments scratching and scraping it.

Abfraction

Abfraction is a theoretical concept explaining a loss of tooth structure not caused by tooth decay (non-carious cervical lesions). It is suggested that these lesions are caused by forces placed on the teeth during biting, eating, chewing and grinding; the enamel, especially at the cementoenamel junction (CEJ), undergoes large amounts of stress, causing micro fractures and tooth tissue loss.

Abrasionnoun

An abraded, scraped, or worn area.

Abrasionnoun

(medicine) A superficial wound caused by scraping; an area of skin where the cells on the surface have been scraped or worn away.

Abrasionnoun

(dentistry) The wearing away of the surface of the tooth by chewing.

Abrasionnoun

The act of abrading, wearing, or rubbing off; the wearing away by friction; as, the abrasion of coins.

Abrasionnoun

The substance rubbed off.

Abrasionnoun

A superficial excoriation, with loss of substance under the form of small shreds.

Abrasionnoun

an abraded area where the skin is torn or worn off

Abrasionnoun

erosion by friction

Abrasionnoun

the wearing down of rock particles by friction due to water or wind or ice

Abrasionnoun

the process of scraping or wearing something away

‘the metal is resistant to abrasion’;

Abrasionnoun

an area damaged by scraping or wearing away

‘there were cuts and abrasions to the lips and jaw’;