perikymata

perikymata

 [per″ĭ-ki´mah-tah]
the numerous small transverse ridges on the surface of the enamel of permanent teeth, representing overlapping prism groups; continued abrasion erodes the enamel surface and obliterates them.

per·i·ky·ma·ta

, sing.

per·i·ky·ma

(per'i-kī'mă-tă, -kī'mă),
Transverse ridges and grooves on the surface of tooth enamel.
[peri- + G. kyma, wave]

per·i·ky·ma·ta

(per'i-kī'mă-tă)
Shallow, horizontal furrows on the enamel of a tooth where the striae of Retzius meet the surface.
[peri- + G. kyma, wave]

per·i·ky·ma·ta

(per'i-kī'mă-tă)
Transverse ridges and grooves on tooth enamel surface.
[peri- + G. kyma, wave]

perikymata (per″'ĭki´mətə),

n the wavy ridges on the surface of a permanent tooth, which signify overlaps in the enamel structure and that may disappear as the enamel wears over time.
References in periodicals archive ?
On the other hand, there are many omissions of terms, and the area of dental histology is a good example, where some frequently used terms have been omitted in the scientific literature and textbooks, such as the term perikymata.
The appositional secretion process of the enamel during its histogenesis creates a series of striations on the surface of the dental crown in the form of grooves known as Perikymata (Simmer & Hu, 20peri [phrase omitted] 'around' + kyma [phrase omitted] derived from the Greek words 'wave' (Cortes & Urena, 2011).
This was achieved by creating standard perikymata profiles (SPPs), or standardized teeth, for each sex and species that allowed individual developmental sequences (IDSs) to be generated for each individual, tracking the position of each defect in the context of continuous perikymata (time).
pygmaeus acquiring defects faster; all other analyses including number of defects, number of perikymata between defects, and autocorrelation analysis revealed no differences between the two species.
from the Kayenta Formation (Early Jurassic: Pliensbachian) of Arizona (Sues 1985) in the presence of a distinct cingular cusp at the anterior (mesial) end of each row of cusps and pronounced perikymata on the enamel.
Macroscopically, incremental pattern of enamel rods is exhibited on tooth surface as perikymata, but microscopically, groups of enamel rods run in unique direction, which differ from adjacent group of enamel rods and results in forming different patterns of enamel rod endings on tooth surface.
4 Fluorosis is clinically manifested, depending on individual susceptibility, by opaque white spots, lines following the perikymata direction, or wavy yellowish and brownish striations of the enamel.
In mild forms, it appears as chalky white lines on the enamel, which are usually symmetrical in contra-lateral teeth following the pathways of the perikymata.
The appearance of smooth, silky-glazed, sometimes dull enamel with the absence of perikymata and intact enamel along the gingival margin are some typical signs of enamel erosion.
They estimated age at the time of death by counting a series of ridges on the surface of the enamel, called perikymata.
Greater numbers of perikymata indicate faster, ape-like enamel growth; fewer numbers point to slower, human-like growth.
described that internal enamel exhibited atypical and more complex rod shapes and its surface presented the typical honeycomb pat- tern but no perikymata,which, however, were ob- served on the outer surface of the tooth.