Public Health of Indonesia
Vol. 12 No. 1 (2026): January - March

Effect of Sodium Bicarbonate Solution Mouth Rinse on Salivary Immunoglobulin A (IgA) Levels

Mahmiyah, Erma (Unknown)
Susatyo, Jojok Heru (Unknown)
Ningsih, Neny Setiawaty (Unknown)
Ayatullah, M. Ibraar (Unknown)
Barka, Amani A (Unknown)



Article Info

Publish Date
23 Feb 2026

Abstract

Background: Gargling with baking soda stimulates parasympathetic nerves in the brainstem's salivatory nuclei, enhancing saliva flow through taste and tactile stimulation. Objective: This study aims to analyzes the effects of sodium bicarbonate mouth rinses on salivary immunoglobulin A (IgA) levels, flow rate, volume, pH, and viscosity. Methods: A Pre and Post-Control Group Design was employed, involving 42 respondents divided into three groups: a control group using 0.1% povidone iodine, a first treatment group using 1% baking soda, and a second treatment group using 2% baking soda. Participants gargled twice daily for 14 days. Results: Results show that a 1% sodium bicarbonate solution significantly reduced salivary IgA levels, flow rate, and volume while increasing pH and viscosity, suggesting a decrease in immune response and potential anti-inflammatory effects. The 2% sodium bicarbonate solution significantly affected flow rate and volume, whereas the 0.1% povidone iodine solution influenced pH and volume. These findings highlight the effectiveness of sodium bicarbonate as an oral rinse for modulating salivary composition and immune activity. Conclusion: In conclusion, a 1% sodium bicarbonate solution demonstrated the most comprehensive effects, reducing IgA levels and altering saliva properties in ways that may benefit oral health by mitigating inflammation. The 2% solution primarily affected saliva production, while povidone iodine impacted pH and volume. This study suggests that sodium bicarbonate mouth rinses, particularly at 1%, could serve as an effective strategy for regulating oral immune responses and maintaining oral health. Keywords: Sodium Bicarbonate;  Immunoglobulin A;  pH; Salivary; Viscosity

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Journal Info

Abbrev

PHI

Publisher

Subject

Public Health

Description

Public Health of Indonesia is an International, peer-reviewed, and open access journal emphasizing on original research findings that are relevant for developing country perspectives including Indonesia. The journal considers publication of articles as original article, review article, short ...