title: Potential side effects of dental amalgam restorations. (II). No relation between mercury levels in the body and mental disorders.
abstract: A group of 50 consecutive patients, referred for self-reported complaints which they related to dental amalgam restorations, was compared with control patients matched by age, sex and postal zip code. All patients were subjected to a psychiatric examination and a set of rating scales and questionnaires, and the symptoms were related to the mercury levels in blood, urine and hair. A psychiatric diagnosis was established in 70% of the patients in the index group versus 14% in the control group. The prevailing symptoms were anxiety, asthenia and depression. Mercury levels in blood, urine and hair were similar among index cases and controls, and were far below critical levels of mercury intoxication. There was no correlation between mercury levels and the severity of the reported symptoms. Therefore, mercury was not a likely cause of the complaints. Instead, the reported symptoms were part of a broad spectrum of mental disorders.
authors.affiliation: Department of Endodontology/Oral Diagnosis, Faculty of Odontology, Göteborg University, Sweden. John.Bratel@odontologi.gu.se
authors.forename: J
authors.initials: J
authors.lastname: Bratel
authors.forename: T
authors.initials: T
authors.lastname: Haraldson
authors.forename: J O
authors.initials: JO
authors.lastname: Ottosson
mesh_terms: D000339:Affect / Q000502:physiology; D001007:Anxiety / Q000139:chemically induced / Q000209:etiology; D001247:Asthenia / Q000139:chemically induced / Q000209:etiology; D016022:Case-Control Studies; D003723:Dental Amalgam / Q000009:adverse effects*; D003793:Dental Restoration, Permanent / Q000009:adverse effects*; D003863:Depression / Q000139:chemically induced / Q000209:etiology; D005260:Female; D006197:Hair / Q000737:chemistry; D006801:Humans; D007389:Internal-External Control; D007406:Interview, Psychological; D008016:Life Change Events; D008297:Male; D001523:Mental Disorders / Q000139:chemically induced / Q000209:etiology*; D008628:Mercury / Q000009:adverse effects* / Q000032:analysis / Q000097:blood / Q000652:urine; D010551:Personality; D012803:Sick Role; D011795:Surveys and Questionnaires
chemical_list: D003723:Dental Amalgam; D008628:Mercury