The Effect of Gingival Melanin Depigmentaion by Dental Lazer Treatment.

The Effect of Gingival Melanin Depigmentaion by Dental Lazer Treatment. - The Effect of Gingival Melanin Depigmentaion by Dental Lazer Treatment.

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000007325

Enrollment

Registered

2012-02-18

Start date

2012-02-01

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Gingival Melanin Depigmentaion

Interventions

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Smorker

Exclusion criteria

Exclusion criteria: Non-smokers

Design outcomes

Primary

Measure	Time frame
The hyperpigmentation area is put into 4 parts. Each part of the gingiva is treated as follows. Er:YAG laser: maxillary, left side, central incisor-cuspid, CO2 laser: mandibular, right side, central incisor-cuspid, abrasion surgery by carborundum points: maxillary, right side, central incisor-cuspid, and without treatment (as a control): mandibular, left side, central incisor-cuspid. The irradiation is carried out accoding to the manual for the hyperpigmentation. After treatment, the depigmentation effects will be evaluated by using Image J (ver1.43, NIH, Bethesda) about all methods.	—

Measure

Time frame

The hyperpigmentation area is put into 4 parts. Each part of the gingiva is treated as follows. Er:YAG laser: maxillary, left side, central incisor-cuspid, CO2 laser: mandibular, right side, central incisor-cuspid, abrasion surgery by carborundum points: maxillary, right side, central incisor-cuspid, and without treatment (as a control): mandibular, left side, central incisor-cuspid. The irradiation is carried out accoding to the manual for the hyperpigmentation. After treatment, the depigmentation effects will be evaluated by using Image J (ver1.43, NIH, Bethesda) about all methods.

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Countries

Japan

Contacts

Public ContactEisaku Nishida

Matsumoto dental university school of dentistry department of periodontology

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026