A case report of monolithic zirconia restorations in a patient with dental metal allergy

Abstract

Patient: A 63-year-old female patient presented with gingival swelling considered to be caused by metal allergy in the mandibular left posterior teeth. As a result of pathological tissue examination and patch tests, the patient was diagnosed with oral lichen planus due to dental metal allergy to Au, Pd and Sn. In this case, the metal materials were removed and replaced with provisional restorations, and the improvement of symptoms was evaluated thereafter. Monolithic zirconia single crowns were placed on the maxillary right and mandibular left posterior teeth.

Discussion: The periodontal tissues and occlusal function have remained in good condition for more than five years. No allergic reactions have been observed.

Conclusion: It was demonstrated that the removal of dental metal materials is effective for treating allergic symptoms in patients sensitized to dental metal materials. This case of lichen planus caused by dental metal allergy was relieved by replacing monolithic zirconia restorations.