A rare case of gingival necrosis following an extraoral injection of dermal filler.

[BACKGROUND] The utilization of dermal fillers for cosmetic procedures has increased dramatically in the past several years, and so is the number of reported adverse events and complications. Most of these reports are centered on extraoral facial structures such as skin, nose, forehead, and eyes. However, as this report illustrates, intraoral complications are also possible and require appropriate management. Our extensive search of the medical and dental literature has failed to yield any such report.

[METHODS AND RESULTS] An injection of dermal filler composed of hyaluronic acid for managing a deep nasolabial fold resulting in an arterial occlusion is presented. Patient exhibited facial skin necrosis, with ecchymoses and crusting, extending to the right eye. Transient diplopia and vision changes were also present. Additionally, intraoral necrosis of the palatal mucosa extending from the right central incisor to the molars and approaching the midline was noted. Patient was managed palliatively until complete re-epithelization was noted, with no further loss of periodontal attachment.

[CONCLUSION] This case illustrates a rare oral complication of extraoral injection of a dermal filler, and its management. The clinicians should be aware of the potential risks of these cosmetic procedures. Early detection and timely management may prevent lasting damage and discomfort. Additionally, some of these complications may require a well-coordinated multidisciplinary involvement to restore health and functions (plastic surgeon, dermatologist, ophthalmologist, and a periodontist).

[KEY POINTS] Why is this case new information? Previous reports of adverse effects linked to dermal fillers were limited to extraoral structures such as the facial skin, nose, forehead, and eye. To the authors' best knowledge, this is the first and only documented case of intraoral necrosis following dermal filler injection What are the keys to successful management of this case? The most important step in managing intra-arterial filler injection and occlusion is the immediate injection of hyaluronidase enzyme to minimize the extent of tissue necrosis. In the case of ocular involvement, immediate referral to an ophthalmologist is required What are the primary limitations to success in this case? Success of managing the adverse effects of vascular occlusion following filler injection depends on several factors, including the anatomical area of occlusion, its extend, along with timely treatment.