Severe Enamel Defects in Wild Japanese Macaques

Figure 2

Plane-form enamel hypoplasia (PFEH) on the posterior dentition of Yakushima macaques. (A) Left maxillary posterior teeth (specimen: PRI 2600), showing extensive PFEH on the fourth premolar and second and third molars (black arrows). Note the first molar appears unaffected; (B) mandibular left posterior teeth (specimen: PRI 2600), showing PFEH on both the second and third molars (black arrows). Note the first molar appears unaffected; (C) mandibular left dentition (specimen: PRI 2598), showing PFEH on the second molar (black arrow), and the canine and the third premolar show defects that are best described as PFEH, but could also be termed “severe LEH” (black stars), especially the cervical most defect on the canine. Note the first molar and remaining deciduous molar are unaffected. Scale bar: 1 cm.