abfraction

名词 n.
中文释义

英文释义

名词 n.
  1. 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. countable,uncountable
    — Due to the stresses resulting from biomechanical loading forces exerted on the teeth (static, as in swallowing and clenching[,] or cyclic, as in chewing), both enamel and dentin can chip or break away. This loss of tooth substance, which shall be termed Abfraction, is dependent on the magnitude, duration, direction, frequency, and location of the forces. These abfractive lesions are caused by flexure and ultimate material fatigue of susceptible teeth at locations away from the point of loading. Clinical observation of a variety of enamel and dentin lesions due to the shapes, sizes, loci, and frequency warrants a new and distinct classification.
  2. An instance of tooth tissue loss via this mechanism. countable,uncountable

词形变化

abfractions plural

词汇关系

相关词
abfracted

词源

From ab- + fraction (“act of breaking”); from 1991.
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