AUTHOR(S): Dr. Nikita Sarraf, Dr. Deepak Raisingani, Dr. Ashwini B Prasad, Dr. Rakesh Singla and Dr. Nidha Madan

ABSTRACT:
Dental amalgam has been used as a dental restoration for more than 165 years. However, the disadvantages of dental amalgam comprise poor aesthetics, local degradation, occasional allergic responses to some of its components or degradation products, and the toxicity of mercury. Amalgam and/or its components may cause type IV hypersensitivity reactions on the oral mucosa. Most patients with oral lichen planus (OLP) have no evidence of any association with dental restorative materials. However, some patients in contact or proximity to restorations involving amalgam or other materials causes these restorations may present oral lichenoid lesions (OLL) or Amalgam Contact Hypersensitive Lesion (ACHL). The diagnosis usually is based on the direct contact of the affected mucosa with the amalgam restorations, clinical appearance, and lack of migrations. The present case report presents a patient with unilateral oral lichenoid reactions (OLRs) to an amalgam restoration in the left mandibular molar region.

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