“The NIST report is now the fourth major scientific body to find no scientific validity to support these central tenets of bitemark analysis.”
NIST found no evidence that teeth leave unique marks, that skin preserves them, or that analysts can match them. More than two dozen people arrested or convicted on bitemarks have since been exonerated. Fixing it would mean reopening a few hundred cases, and courts still won’t. The science left in 2009. The courts are still letting it in.