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Gingival Hyperpigmentation Treatment

2026년 5월 15일 업데이트: Nourhan Abdallah Abdelkhalek, Cairo University

Gingival Hyperpigmentation Treatment With Injectable Vitamin C in Conjunction With Glutathione Versus The Conventional Surgical Depigmentation: A Randomized Controlled Clinical Trial

It is a clinical study conducted to evaluate the effect of vitamin C and Glucathonine injection of pigmented gingival tissue versus surgical removal by scalpel

연구 개요

상세 설명

Over the last decade, an increasing interest has been observed in esthetic treatments. In fact, The smile is an important aesthetic component of the face and significantly impacts the perception of beauty and psychological well-being. Gingival hyperpigmentation has been an aesthetic problem for many patients, which can definitely affect their psychosocial behavior.

Gingival hyperpigmentation is not a condition and can be defined as " a darker gingival color beyond what is normally expected". Moreover, it can be attributed to multiple external or internal factors. It may be physiological (excessive melanin deposition) or pathological (smoking).

Gingival Depigmentation can be treated by different modalities including chemical and surgical methods. Lately, gingival Depigmentation was carried out by lasers, cryosurgery and radiosurgery.

Additionally, multiple evidence have suggested the use of ascorbic acid (vitamin C) to treat gin- gival pigmentation. It was demonstrated that ascorbic acid is a water-soluble antioxidant and an essential nutrient for collagen biosynthesis. Furthermore, it was proven that it is effective in the elimination of hyperpigmented lesion.

Lately, glutathione has come into focus in aesthetics because of its antimelanogenic (inhibits melanosome transfer from melanocytes to keratinocytes) and antioxidant properties. It aids in skin lightening because it inhibits tyrosinase enzymes. Moreover, the use of vitamin C and glutathione has been well established, as they participate in antioxidant cellular defense systems. The series of oxidation-reduction reactions that allow vitamin C and glutathione to interact each other makes them unique The aim of the current study is to evaluate the efficacy of its rather-epidermal vitamin C in conjunction with glutathione injection compared to the conventional surgical technique in order to manage patients with gingival hyperpigmentation.

연구 유형

중재적

등록 (추정된)

30

단계

  • 2 단계

연락처 및 위치

이 섹션에서는 연구를 수행하는 사람들의 연락처 정보와 이 연구가 수행되는 장소에 대한 정보를 제공합니다.

연구 연락처

연구 장소

    • Faiyum Governorate
      • Al Fayyum, Faiyum Governorate, 이집트, 63511
        • 모병
        • Faculty of Dentistry
        • 연락하다:
          • Amr E Emaraa, Associate professor

참여기준

연구원은 적격성 기준이라는 특정 설명에 맞는 사람을 찾습니다. 이러한 기준의 몇 가지 예는 개인의 일반적인 건강 상태 또는 이전 치료입니다.

자격 기준

공부할 수 있는 나이

  • 성인
  • 고령자

건강한 자원 봉사자를 받아들입니다

설명

Inclusion Criteria:

The selection criteria were done according to Gingival pigmentation index is as follows (Dummett and Bolden)10:

  1. Score0:absence of pigmentation
  2. Score1:spotsofbrowntoblackcolororpigments
  3. Score2:browntoblackpatchesbutnotdiffusepigmentation
  4. Score3:diffuse brown to black pigmentation,marginal,and attached.

Patients who have Dummett and Bolden index score 1, 2, or 3 will be included in addition to the following criteria:

  1. above 18yrs
  2. systemically free
  3. physiologic gingival hyperpigmentation related to esthetic region
  4. well maintained oral hygiene and willing to undergo minor surgical procedures

Exclusion Criteria:

  1. systemic diseases associated with pathological hyperpigmentation or improper delayed wound healing (uncontrolled diabetes, autoimmune diseases, etc.)
  2. pregnant and lactating mothers
  3. usage of chlorhexidine or povidone iodine
  4. Local causes (smoking)
  5. periodontal diseases (plaque and non-plaque induced gingivitis or periodontitis)
  6. non compliant patients

공부 계획

이 섹션에서는 연구 설계 방법과 연구가 측정하는 내용을 포함하여 연구 계획에 대한 세부 정보를 제공합니다.

연구는 어떻게 설계됩니까?

디자인 세부사항

  • 주 목적: 치료
  • 할당: 무작위
  • 중재 모델: 병렬 할당
  • 마스킹: 없음(오픈 라벨)

무기와 개입

참가자 그룹 / 팔
개입 / 치료
실험적: Arm1:(Vit C & glutathione injection)

The site of interest will be anesthetized using topical anesthetic agent (lignocaine gel or xylocaine gel). Infiltration anesthesia will be recommended during the first injection visit. Intraepidermal injection of 1-1.5 ml of vitamin C and glutathione will be performed. It will be locally introduced in relation to the keratinized gingival tissues with extension to the whole target region successively using special syringes (50 gauge).

The needle will be introduced parallel to the gingival tissues with the bevel facing upwards. Vitamin C & glutathione will then be delivered through the attached gingival tissues at the epithelium-connective tissue junction (equivalent to epidermal- dermal junction) till the tissues blanch. Maximum 0.1 ml of injection is recommended for each point with 2-3 mm apart. The same dose will be repeated once per week for maximum 4 visits till no further color improvement gained.

Vitamins c and glutathione injection that usually used for cosmetic skin care (whitening)
활성 비교기: ATM 2: surgical depigmentation

Using a 15c blade an epithelial layer and part of connective tissue will be removed till the pigmentation disappears with ultra care not to expose the bone. The marginal and interdental papillary tissues remain critical regions, fortunately, they are not deeply pigmented. Periodontal dressing is recommended for minimal 7 days postoperative.

Patients will be instructed to avoid the mechanical trauma to the treated sites. Patients will be administering an analgesic (Ibuprofen 400 mg) to be used as needed. Following each injection visit, the patients will be asked to abstain from mechanical oral hygiene procedures in relation to the target region for the day of procedure only. Plain tooth pastes (Colgate toothpaste) with anti- inflammatory mouthwash (Citrolin mouth, Pharco Company, Egypt) were recommended.

Removal of gingival pigmentation by scalpel

연구는 무엇을 측정합니까?

주요 결과 측정

결과 측정
측정값 설명
기간
Degree of gingival pigmentation by Takashi index (Hanioka et al., 2005)
기간: baseline: before surgery/injection (day1), after 1 mon ,3 mon ,6 mon and 9 month

Degree of gingival pigmentation 0: no pigmentation

  1. solitary unit (s) of pigmentation in papillary gingiva without extension between neighboring solitary units
  2. formation of continuous ribbon extending from neighboring solitary units)
baseline: before surgery/injection (day1), after 1 mon ,3 mon ,6 mon and 9 month
Degree of gingival pigmentation by Gingival pigmentation index (Kumar et al., 2013)
기간: The color assessment will be evaluated in the daylight and by examining the regular digital photographs which will be taken pre-operative (day of the procedure / day 1), and post-operatively after 1 month and 9 months.
Score 0: absence Score 1: spots of brown to black Score 2: brown to black patches but not diffuse Score 3: diffuse brown to black pigmentation
The color assessment will be evaluated in the daylight and by examining the regular digital photographs which will be taken pre-operative (day of the procedure / day 1), and post-operatively after 1 month and 9 months.

2차 결과 측정

결과 측정
측정값 설명
기간
Pain score
기간: visual analogue scale (VAS) after the surgery/injection (day 1) till 10 days after (day 10 after the surgery/injection)
VAS scores pain will be divided into ten numerical parts consisting of one cm each on a horizontal line with two endpoints (left and right), with "0" representing "no pain" to "10" representing "severe pain."
visual analogue scale (VAS) after the surgery/injection (day 1) till 10 days after (day 10 after the surgery/injection)
Itching
기간: visual analogue scale (VAS) after the surgery/injection (day 1) till 10 days after (day 10 after the surgery/injection)
A vertical scale for wound itching was measured with a scale with five scores: no itching (0) mild itching (1point) moderate itching (2 points) severe itching (3 points) extremely severe (4 points)
visual analogue scale (VAS) after the surgery/injection (day 1) till 10 days after (day 10 after the surgery/injection)
Patient satisfaction
기간: At the end of the follow up period ( 9 months)
using a 5- graded self-assessment analysis (Huh et al. 2003). excellent (grade 4: improved over 75%) good (grade 3: improved 50e75%) moderate (grade 2: improved 25e50%) fair (grade 1: improved less than 25%) no change or worse (grade 0: not improved or darkened)
At the end of the follow up period ( 9 months)

공동 작업자 및 조사자

여기에서 이 연구와 관련된 사람과 조직을 찾을 수 있습니다.

스폰서

협력자

수사관

  • 수석 연구원: Nourhan A Abdullah, Phd, Lecturer at faculty of dentistry, Fayoum university

연구 기록 날짜

이 날짜는 ClinicalTrials.gov에 대한 연구 기록 및 요약 결과 제출의 진행 상황을 추적합니다. 연구 기록 및 보고된 결과는 공개 웹사이트에 게시되기 전에 특정 품질 관리 기준을 충족하는지 확인하기 위해 국립 의학 도서관(NLM)에서 검토합니다.

연구 주요 날짜

연구 시작 (실제)

2025년 8월 1일

기본 완료 (추정된)

2027년 1월 1일

연구 완료 (추정된)

2027년 10월 1일

연구 등록 날짜

최초 제출

2026년 5월 11일

QC 기준을 충족하는 최초 제출

2026년 5월 15일

처음 게시됨 (실제)

2026년 5월 19일

연구 기록 업데이트

마지막 업데이트 게시됨 (실제)

2026년 5월 19일

QC 기준을 충족하는 마지막 업데이트 제출

2026년 5월 15일

마지막으로 확인됨

2026년 5월 1일

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아니

이 정보는 변경 없이 clinicaltrials.gov 웹사이트에서 직접 가져온 것입니다. 귀하의 연구 세부 정보를 변경, 제거 또는 업데이트하도록 요청하는 경우 register@clinicaltrials.gov. 문의하십시오. 변경 사항이 clinicaltrials.gov에 구현되는 즉시 저희 웹사이트에도 자동으로 업데이트됩니다. .

글루타티온에 대한 임상 시험

Vitamin c and glutathione에 대한 임상 시험

구독하다