Adverse reactions to facial dermal fillers: a case report.

AIM: To describe an early-onset adverse reaction following the injection of facial fillers, and to summarise the current legislation and research regarding cosmetic dermal fillers. To emphasise that dermal fillers should be considered as part of a general dental practitioner's differential diagnosis for lower lip swelling. OBJECTIVES: (1) To describe the types of adverse reactions associated with dermal fillers in the literature; (2) to summarise the current European and Irish legislation and guidance regarding the use of these products; and, (3) to present a case study of an early-onset adverse reaction. CONCLUSION: Dentists should question patients regarding the use of cosmetic dermal fillers as part of the differential diagnosis of any intra-oral painless swelling where other pathology cannot be identified.