Elucidation of the relationship between the number of times of mastication and the amount of secretory IgA in saliva

Elucidation of the relationship between the number of times of chewing when eating rice balls and the amount of secretory IgA in saliva

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-jRCT1040260006

Enrollment

100

Registered

2026-04-13

Start date

2024-07-20

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

Establishment of a method to improve saliva immunity in healthy subjects

Interventions

Eating rice balls with different chewing frequency

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Those who are 20 years of age or older at the time of consent Those who have at least 20 teeth.

Exclusion criteria

Exclusion criteria: Persons with chewing disorders Those who are taking medicines that may affect the study, such as antimicrobial agents. Persons who have undergone or are currently undergoing dental treatment within 3 months of the date consent was obtained.

Design outcomes

Primary

Measure	Time frame
Salivary IgA level	—

Secondary

Measure	Time frame
saliva volume	—

Contacts

Public ContactTakaaki Tomofuji

Asahi University

tomofu@dent.asahi-u.ac.jp+81-58-329-1496

Outcome results

None listed

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