Abstract
Recently our concern has been focused on increasing risks of various allergies including pollen diseases and atopic dermatitis. Dental metal allergies, as well, are known to be caused by especially nickel chrome or cobalt chrome from metal compositions within crowns, bridges and denture metals inducing various diseases in the oral cavity 1).
In this occasion our report will refer to treatment processes of a patient who developed allergies after insertion of a maxillary single denture using cobalt chrome base, and we would like to discuss over future solutions and measures.
Symptoms:Concave and convex irregular bloating and reddening in the process of white keratinization were observed in the palatal mucosa where the Co-Cr metal base was in contact.
Clinical progress:Patch testing revealed positive reactions to cobalt chloride and zinc chloride, and so a resin based denture was made for this patient.
Results:Symptoms were improved with the resin based denture.
Discussion:Materials for appliances should be clarified through patch test verification.
