Clinical decision-support only. For use by licensed dental professionals. Not a substitute for professional judgment or a complete drug reference. Always verify with primary sources.
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Mineral

Copper

Likelihood in at-risk patientsLow

Likelihood of deficiency within an at-risk group, not the general population.

Evidence confidenceLow

Strength of the peer-reviewed evidence.

Food sources

Shellfish, Nuts and seeds, Whole grains, Organ meats

Typical intake: 900 mcg/day for most adults (RDA).

Upper limit: 10,000 mcg (10 mg)/day for adults.

Dental & oral effects of deficiency

No well-established oral-specific sign of deficiency on file.

Associated with deficiency

  • Anemia: Impaired iron metabolism causes anemia that doesn't respond to iron alone.
  • Bone abnormalities / immune dysfunction: Connective-tissue and immune effects from copper deficiency.

Dental & oral effects of surplus / excess

No well-established oral-specific effect of excess intake on file.

General toxicity (not necessarily oral-specific)

  • Copper accumulation toxicity: GI upset and, with chronic very high intake or impaired excretion (e.g. Wilson's disease), liver damage. No well-established oral-specific effect.

Sources

  1. Copper: Health Professional Fact Sheet. National Institutes of Health, Office of Dietary Supplements. NIH Office of Dietary Supplements, 2026.
  2. A Prescription for Change: Food as Medicine & the Vital Role of Nutrition in Patient Care. teethFirst. Continuing education course material, 2025.