Distinctive aspects of oral hyaline ring granulomas

The hyaline ring granuloma is a distinct oral entity characterized as a foreign body reaction occurring either centrally or peripherally. The granulomas may assume different histological characteristics, possibly related to the length of time in the tissue, and adequate recognition is important to avoid misdiagnosis. The aim of this article was to report 3 cases of hyaline ring granulomas with distinctive clinical and histopathological aspects, discussing the reasons for the different histological findings.