OLYMPIA, Wash. – A woman who had cow bone grafted into her mouth against her wishes can’t sue a dental office under the state’s Consumer Protection Act, the state Supreme Court ruled Thursday.

The patient, Mystie Michael of Olympia, sued after getting a bone graft that contained some cow parts.

Michael’s periodontist, Dr. Betsy Mosquera-Lacy, started the graft with a human bone as requested, but ran out during the surgery. Mosquera-Lacy completed the graft with cow bone, which is also used in dental grafts.

Michael found out about the cow-bone substitution while recovering in the hospital, where she was rushed after the surgery because of an allergic reaction to drugs.