Allergic contact cheilitis caused by nickel from stainless steel crowns in primary molars: An easily overlooked intraoral allergen in children?

The authors declare no conflicts of interest. Figure S1. Exacerbation of lip lesions after triamcinolone acetonide discontinuation (provided by the patient's mother). Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.