abfraction


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abfraction

 [ab-frak´shun]
pathological loss of tooth structure owing to biomechanical forces (flexion, compression, or tension) or chemical degradation; it is most visible as V-shaped notches in the cervical area of a tooth.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

abfraction

(ab-frak'shŭn),
To break away.
Farlex Partner Medical Dictionary © Farlex 2012

ab·frac·tion

(ab-frak'shŭn)
Pathologic loss of hard tooth substance caused by biomechanical loading forces.
[ab- + L. fractio, a breaking, fr. frango, fractum, to break]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

ab·frac·tion

(ab-frak'shŭn)
Loss of tooth structure considered due to combined stress on tooth, resulting from flexure and chemical factors; usually evident as a notch on the buccal surface just occlusal to the adjacent gingiva.
[ab- + L. fractio, a breaking, Fr. frango, fractum, to break]
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive ?
Dentin exposure may be the result of attrition, abrasion, erosion or abfraction. Denudation of root surface due to gingival recession or non-surgical and surgical periodontal treatment can also cause Dentin Hypersensitivity.
Tooth surface loss is a composite terminology which broadly covers non-carious tooth surface loss due to attrition, abrasion, abfraction and erosion.1,2
There are also a few other possibilities for using the quantitative analysis of the intraoral structures and tissue conditions such as dental enamel and dental caries [86], dental abfraction and attrition [98], enamel erosion [101], enamel demineralization [109], thickness of dentin layer [121], and soft tissues [173].
Unattended compromised anterior guidance for longer durations can initiate attrition and abfraction of posterior teeth, periodontal diseases due to trauma from occlusion, and temporomandibular joint disorders.
Signs of excessive tooth flexure can be excessive enamel crazing, tooth and restoration wear, tooth and restoration fracture, microleakage at restoration margins, recession and abfraction lesions.
Sleep bruxism can cause severe attrition that leads to exposed dentin, abfraction, tooth mobility and tooth fracture.
An assessment of stress analyses in the theory of abfraction. Biomed Mater Eng.
Effect of root morphology on biomechanical behavior of premolars associated with abfraction lesions and different loading types.
This exposure can be the result of numerous etiologic factors that include abrasion, erosion, attrition, abfraction, and gingival recession.
There are no cavities, dental enamel hypoplasia, erosions, or abfraction lesions, which reveals a good state of oral health.