Gingival pigmentation.

Gen Dent

Published: July 1986

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Oral melanocytic nevi (OMN) are rare benign tumors originating from melanocytes with an unclear pathogenesis. The current theory suggests that OMN originate from dormant dendritic melanocytes that become enclosed in the dermis during the embryonic migration of melanoblasts - the precursors of melanocytes - from the neural crest to the epidermis. OMN can be congenital or acquired, with acquired nevi being more common.

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Background: Surgical methods of gingival depigmentation can be challenging, particularly if the gingival phenotype is thin due to the risk of gingival recession and bone exposure. Thus, exploring alternative, non-surgical, minimally invasive treatment modalities is warranted. In dermatology, vitamin C is extensively used for depigmentation and microneedling for collagen induction, with limited literature about its usage for improving gingival esthetics.

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Background: Gingival recession has a multifactorial etiology, involving various predisposing and precipitating factors. Non-carious cervical lesions (NCCLs) are often associated with gingival recession and pose challenges due to their complex pathodynamics. There is limited evidence regarding tunnel-based procedures combined with connective tissue grafts (CTGs) for treating recession-associated NCCLs.

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A Comparative Study of the Use of a 980 nm Diode Laser and 10600nm CO2 in the Treatment of Gingival Melanin Pigmentation.

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December 2024

Department of Periodontics, Dental Implants Research Center, Dental Research Institute, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran.

Gingival depigmentation with the help of lasers is known as an effective technique. The aim of this study was to compare the efficiency of 980nm diode and CO2 lasers in the treatment of gingival hyperpigmentation. In this clinical trial study, 14 individuals (8 females and 6 males) with the age range of 19 to 47 years were selected.

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This study aimed at comparing gingival depigmentation by locally injected vitamin C with surgical depigmentation, in terms of effectiveness and patient acceptability. Forty-two patients presenting with ethnicity-related hyperpigmentation were randomly divided into two groups, Group I ( = 21) was treated with locally injected vitamin C and Group II ( = 21) was treated by surgical depigmentation. The outcome was assessed using Gingival Pigmentation Index (GPI) and Skin Hyperpigmentation Index (SHI).

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