Clinical Study of removing extrinsic stain from tooth surface by whitening toothpastes

Status

Recruiting

Phases

Phase 3

Study type

Interventional

Source

ChiCTR

Registry ID

ChiCTR2300067562

Enrollment

Unknown

Registered

2023-01-11

Start date

2023-01-01

Completion date

Unknown

Last updated

2023-05-15

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

Conditions

Extrinsic tooth stain

Interventions

Test group:Whitening toothpaste

placebo group:placebo

Eligibility

Sex/Gender

All

Age

18 Years to 60 Years

Inclusion criteria

Inclusion criteria: (1) The age is between 18 and 60 years old; (2) Good general health; (3) There are 12 natural anterior teeth in the mouth, and there are no restorations such as fillings or crowns; (4) There are extrinsic stains on teeth; (5) Willing to participate in the experiment and signed the consent form

Exclusion criteria

Exclusion criteria: (1) The subject has serious caries, periodontal disease, chronic disease or a history of allergy to experimental products; (2) Women are in pregnancy or lactation; (3) Currently participating in other clinical trials; (4) Orthodontic treatment or fixed or movable dentures on the front teeth; (5) Endogenous staining of tetracycline teeth and dental fluorosis; (6) Tooth abnormalities such as enamel hypoplasia; (7) Anterior tooth neck defect and dentin hypersensitivity; (8) Smokers

Design outcomes

Primary

Measure	Time frame
Tooth color;Stain index;	—

Secondary

Measure	Time frame
Patient satisfaction;	—

Countries

China

Contacts

Public ContactQinghui Zhi

Hospital of Stomatology, Sun Yat-sen University

zhiqinghui@qq.com13660093543

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Feb 4, 2026