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. 2017 Feb 14;12(2):e0171424. doi: 10.1371/journal.pone.0171424

Fig 2. Cross-section of the mesial part (protoconid-metaconid) of m3 (SEM) in (a) an immature (17-month-old) and (b) mature (30-month-old) minipig.

Fig 2

The immature tooth illustrates the heterotopy of enamel maturation: the simultaneous appearance of mature compact enamel close to the EDJ (1), a partly mature enamel segment (2), and outer immature enamel (3); EDJ = enamel-dentine junction. (c) longitudinal section of semimature m3 (20-month-old) individual with a macroscopic view of Hunter-Schreger bands (HSB) and outer aprismatic enamel.