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Comparative Clinical Assessment of Charcoal and Conventional Toothbrushes

NCT07563413 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 36

Last updated 2026-05-04

No results posted yet for this study

Summary

Oral hygiene practices are fundamental to maintaining oral health, preventing dental plaque accumulation, halitosis, stains, gingival and periodontal diseases, and improving overall quality of life. Dental plaque plays a central role in the initiation of caries and periodontal disease by lowering enamel surface pH and promoting hydroxyapatite dissolution. Toothbrushing with toothpaste remains the most widely accepted and effective method for mechanical plaque control, with its efficacy influenced by toothbrush design, brushing technique, and duration. Recently, charcoal-infused toothbrushes have been introduced as an alternative oral hygiene aid.

These brushes incorporate binchotan charcoal into nylon bristles, purportedly offering antimicrobial, deodorizing, and stain-removal properties by increasing oral pH, reducing bacterial load, and absorbing stain causing compounds. Despite growing commercial interest, scientific evidence supporting their clinical efficacy remains limited. Therefore, this randomized controlled clinical trial aims to evaluate and compare the effectiveness of charcoal-infused toothbrushes versus conventional toothbrushes in plaque reduction and stain removal among Egyptian adults. Plaque levels will be assessed using the Turesky and Gilmore modification of the Quigley-Hein Plaque Index, while stain removal efficacy will be evaluated through spectrophotometric color measurements using a Vita Easyshade device. Outcomes will be recorded at baseline and after four weeks of twice-daily brushing with standardized fluoride toothpaste. This study addresses a clear gap in the literature by providing clinical evidence on the effectiveness of charcoal-containing toothbrushes, thereby supporting evidence-based recommendations for modern oral hygiene practices.

Conditions

  • Dental Plaque

Interventions

PROCEDURE

charcoal toothbrush

Participants were randomly assigned to either a charcoal-infused toothbrush (test group) or a conventional nylon toothbrush (control group). Both groups were instructed to brush twice daily for 2 minutes using standardized fluoride toothpaste and to follow the same brushing instructions provided at baseline. No additional oral hygiene aids or whitening products were allowed during the 4-week study period. Compliance was encouraged through regular reminders, and clinical assessments were performed at baseline and after 4 weeks.

Sponsors & Collaborators

  • Cairo University

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
SUPPORTIVE_CARE
Masking
SINGLE
Model
PARALLEL

Eligibility

Min Age
21 Years
Max Age
50 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2026-01-01
Primary Completion
2026-02-01
Completion
2026-02-20

Countries

  • Egypt

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07563413 on ClinicalTrials.gov