Tooth flexure hypothesis is the most accepted one. This hypothesis assumed the occlusal load as the causative factor for abfraction as the occlusal stress concentrates at the thin enamel of the gingival third of the tooth, so enamel fractures leading to formation of wedge-shape cervical defect. ...
Throughout the years, the dental profession has held a variety of theories about the causes of tooth wear, including chemical wasting of the teeth, the effects of tooth brushing, and lateral forces. Tooth wear may present as abfraction, abrasion, attrition, and erosion. It is well established...
The meaning of ABFRACTION is a mechanism that is postulated to explain loss of tooth enamel and dentin in the part of a tooth between the crown and root in the absence of tooth decay; also : the narrow usually V-shaped area of tooth loss caused by abfrac
Examination of ancient skeletal remains have not found such tooth lesions although the teeth show occlusal wear. In support of the process of abfraction, cervical enamel is more brittle than dentine and there is poorly developed scalloping between this and dentine in this region. This has to ...
The article provides information on abfraction. It relates that the term denotes the loss of tooth structure at the cervical region from heavy occlusal forces. It notes that causes of abfraction include excessive chewing and or biting forces such as bruxism, erosion and corrosion. It also mentions...
tooth wear Abstract Non-carious cervical lesions involve loss of hard tissue and, in some instances, restorative material at the cervical third of the crown and subjacent root surface, through processes unrelated to caries. These non-carious processes may include abrasion, corrosion and possibly abfr...
Twelve models were generated: sound tooth, 1·25 and 2·5 mm abfraction teeth. 100N compressive static load was applied: axially and 45° angle to the long axis on the palatine surface of the buccal cusp. Two strain gauges were bonded on the teeth mounted in a mechanical testing ...
Abfraction is a loss of tooth structure at the cervical area, which is caused by tensile and compressive strength. The loss of enamel may expose the dentin and will result in hypersensitivity of dentin and affects pulp vitality. The diagnosis could be identified in the presence of wedge shaped...
Objective: Recently, occlusal stress causing of cervical enamel cracks (abfraction) has been considered as an additional etiology for NCCLs to facilitate the erosion and abrasion mechanisms in tooth wear. Study Design: The prevalence of NNCLs and wear facets in a population with permanent dentition ...
tooth abrasiontooth cervixanálise de elemento finitoabrasão dentáriacolo do denteNon-carious cervical lesions are characterized by structural loss near the cementoenamel junction, without the presence of caries. Anumber of theories have arisen to explain the etiology of such lesions, although the ...