title: Cryosurgery by tetrafluoroethane: An answer to black gums.
abstract: To highlight the effect of 1,1,1,2 tetrafluoroethane (TFE), a new material for cryosurgery of gingival melanin pigmentation (GMP). Five patients were treated using a TFE-cooled swab and the pre- and post-treatment photographs were compared. Complete keratinization took place in 3-4 weeks after application without any trace of pigmentation. During the follow-up period, no side effects were observed and the improved esthetics were maintained upto 1 year.
authors.affiliation: Department of Periodontics and Oral Implantology, Institute of Dental Sciences, Ghatikia, Bhubaneswar, Odisha, India.
authors.forename: Manoj
authors.initials: M
authors.lastname: Kumar
authors.forename: Prasanta
authors.initials: P
authors.lastname: Bandyopadhyay
authors.forename: Debabrata
authors.initials: D
authors.lastname: Kundu
authors.forename: Lora
authors.initials: L
authors.lastname: Mishra
keywords: Esthetics; gingival melanin pigmentation; tetrafluoroethane