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Mucosal reactions to amalgam restorations.

M W Jameson¹, T B Kardos, E E Kirk

¹Department of Restorative Dentistry, School of Dentistry, University of Otago Dunedin, New Zealand.

Journal of Oral Rehabilitation

|July 1, 1990

Summary

Dental amalgam restorations can cause oral lichenoid reactions and mercury hypersensitivity. Replacing these restorations with non-metallic alternatives resolved symptoms in reported cases, highlighting the need to consider heavy metal sensitivity.

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Area of Science:

Oral Medicine
Dermatology
Toxicology

Background:

Amalgam restorations are frequently used in dentistry.
Concerns exist regarding potential adverse reactions to amalgam components, particularly mercury.
Oral lichenoid reactions (OLR) and contact hypersensitivity have been anecdotally linked to dental amalgams.

Observation:

Two patients presented with oral lichenoid reactions and contact hypersensitivity to mercury.
These reactions were associated with amalgam restorations.
Clinical improvement was observed after replacing amalgams with non-metallic alternatives.

Findings:

The reported cases demonstrate a link between amalgam use and oral mucosal reactions.
Resolution of lesions after amalgam replacement supports a hypersensitivity mechanism.

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Mercury hypersensitivity is a plausible cause for these oral mucosal conditions.

Implications:

Clinicians should consider heavy metal sensitivity in patients with oral lichenoid reactions.
Material selection for dental restorations is critical for managing hypersensitivity.
Further research into alternative dental materials and desensitization protocols is warranted.