Oral focal mucinosis arising on the gingiva of orthodontic patient

摘要

Oral focal mucinosis is an uncommon non-neoplastic lesion of unknown etiology. We presented a unique case of a sessile, well-demarcated gingival nodule adjacent to the right mandibular first molar of a young girl submitted to orthodontic treatment that was diagnosed as oral focal mucinosis. The probably etiopathogenesis of this lesion in orthodontic patient is discussed.