From a recent Tech Dirt op-ed.
“We’ve discussed the junk science masquerading as forensic science in criminal cases. Coming in slightly ahead of chatting with psychics is “bite mark analysis.” According to these so-called experts, each bite mark is just as unique as a fingerprint. But if so, why have so many cases been overturned when actual science — usually DNA evidence — is examined? Bite mark analysts have no answers. Fortunately, there’s been less and less reliance on this highly-questionable evidence over the years.”