Abrasion: Definition, Causes & Management
Aetiology The commonest aetiological agent involved in abrasion is described as resulting from overvigorous toothbrushing or abrasive dentifrices on exposed dentine. However this is now not thought to be the only mechanism affecting cervical abrasion cavities and chemical erosion may well be an additional factor. Abrasion has been subdivided into:
• two-bodied abrasion, where two surfaces move against each other, e.g. biting or chewing a hair grip or pipe stem, and
• three-bodied abrasion where an intervening slurry is at work, e.g. toothpaste or food.
Management The management of tooth surface loss is firstly preventive to stop further deterioration and secondly restorative if the degree of loss necessitates the replacement of the lost tooth substance. Aetiological factors should always be identified and addressed prior to any restorative treatment being instigated.