Related Experiment Video
Updated: May 9, 2026
28:32
Flash Freezing and Cryosectioning E12.5 Mouse Brain
Published on: May 28, 2007
Cryosurgery by tetrafluoroethane: An answer to black gums
Manoj Kumar1, Prasanta Bandyopadhyay, Debabrata Kundu
1Department of Periodontics and Oral Implantology, Institute of Dental Sciences, Ghatikia, Bhubaneswar, Odisha, India.
Journal of Indian Society of Periodontology
|July 23, 2013
Summary
1,1,1,2 tetrafluoroethane (TFE) effectively treated gingival melanin pigmentation (GMP) with cryosurgery. The procedure resulted in complete keratinization and maintained improved esthetics for up to one year without side effects.
Area of Science:
- Dentistry
- Dermatology
- Cryosurgery
Background:
- Gingival melanin pigmentation (GMP) presents esthetic concerns for patients.
- Current treatments for GMP can be invasive or have limited long-term efficacy.
- 1,1,1,2 tetrafluoroethane (TFE) is explored as a novel cryosurgical agent.
Observation:
- Five patients with GMP underwent cryosurgery using a TFE-cooled swab.
- Pre- and post-treatment photographs were used to assess outcomes.
- The treatment involved direct application of the TFE-cooled swab to the pigmented areas.
Findings:
- Complete keratinization of the treated gingival areas was observed within 3-4 weeks.
- No residual pigmentation was evident after treatment.
- Follow-up assessments up to 1 year showed sustained esthetic improvement.
Implications:
- TFE cryosurgery offers a potentially safe and effective minimally invasive option for treating GMP.
- The procedure demonstrates good long-term esthetic results.
- Further research may validate TFE as a standard treatment for gingival hyperpigmentation.
