Scores on the Minnesota Multiphasic Personality Inventory-2 (MMPl-2), the Millon Clinical Mulliaxial Inventory-11 (MCMI-1I), and Symptom Check List-90 (SCL-90) were compared before dental amalgam removal of eight schizophrenia. patients lo scores six months after amalgam removal. Significant improvement was found in forty-one of the sixty-one component scales of the MMPl-2 and twelve of the twenty subscales including schizophrenia, nysteria, paranoia, and anger. Sixteen of the twenty-five diagnostic scales improved significantly in the MCMt-ll including schizoid, anxiety disorders, thought disorders, and bipolar symptoms. Four of nine dimensions improved, significantly in the SCL-90 including depression, psychoticism, and obsessive-compulsive. Because dental amalgam. mercury can enter the brain and affect neurotransm.it.t.ers, Ihe authors hypothesis that removal of the mercury-laden fillings may have contributed to the improved mental health.