Example of Baikal seal skull specimens. (a) Maxilla and (b) mandible tooth row. (c–f) Enlarged view of maxilla teeth. (c) Yellow arrows represent the number of cusps. (d) Yellow dashed line represents ...

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Celebrities and civilians alike are “fixing” their natural teeth. Now everybody has the same smile … and it’s kind of creepy. BEVERLY HILLS, Calif. Have you ever looked at Selena Gomez’s teeth? Like, ...