Aetiology of abfraction lesions.
The aetiology of abfraction lesions is complex. Most evidence indicates that physical loading forces are a major contributing factor, although they are unlikely to be entirely responsible. Intraoral chemical influences and toothbrush abrasion, combined with the dynamics of inter-occlusal activity such as chewing, swallowing, and parafunction, lead to stress corrosion and may contribute to abfraction lesions. The multifactorial aetiology that operates in the initiation and progression of these lesions has made investigation difficult. Various theories have been proposed and numerous surveys and studies conducted, but the primary causal factor has yet to be definitively determined. This review concludes that occlusal loading is the initiating factor in the development of abfraction lesions.
Lyons
K
K
Department of Oral Rehabilitation, School of Dentistry, University of Otago, PO Box 647, Dunedin.
D001732:Bite Force; D002012:Bruxism / Q000150:complications; D003743:Dental Enamel / Q000473:pathology; D003799:Dental Stress Analysis; D006801:Humans; D013314:Stress, Mechanical; D019217:Tooth Attrition / Q000209:etiology*; D019237:Tooth Cervix / Q000473:pathology*; D014099:Toothbrushing / Q000009:adverse effects